C# Eval Expression - LINQ Dynamic - SelectMany

LINQ Dynamic SelectMany Examples

C# Dynamic LINQ Where examples using an Expression Evaluator.

SelectMany - Compound from 1

This C# example uses the LINQ SelectMany method to make a query that returns all pairs of numbers from both arrays such that the number from numbersA is less than the number from numbersB.

LINQ

private void uiSelectMany_CF_1_LINQ_Click(object sender, EventArgs e)
{
	int[] numbersA = {0, 2, 4, 5, 6, 8, 9};
	int[] numbersB = {1, 3, 5, 7, 8};

	var pairs = numbersA.SelectMany(a => numbersB, (a, b) => new {a, b}).Where(arg => arg.a < arg.b);

	var sb = new StringBuilder();

	sb.AppendLine("Pairs where a < b:");
		foreach (var pair in pairs)
		{
			sb.AppendLine("{0} is less than {1}", pair.a, pair.b);
		}

	My.Result.Show(My.LinqResultType.Linq, uiResult, sb);
}

LINQ Execute

private void uiSelectMany_CF_1_LINQ_Execute_Click(object sender, EventArgs e)
{
	int[] numbersA = { 0, 2, 4, 5, 6, 8, 9 };
	int[] numbersB = { 1, 3, 5, 7, 8 };

	var pairs = numbersA.SelectMany(a => numbersB, (a, b) => new { a, b }).Where(arg => arg.a < arg.b);

	var sb = new StringBuilder();

	sb.AppendLine("Pairs where a < b:");
		foreach (var pair in pairs)
		{
			sb.AppendLine("{0} is less than {1}", pair.a, pair.b);
		}

	My.Result.Show(My.LinqResultType.LinqExecute, uiResult, sb);
}

Result

LINQ Execute Test
------------------------------
Pairs where a < b:
0 is less than 1
0 is less than 3
0 is less than 5
0 is less than 7
0 is less than 8
2 is less than 3
2 is less than 5
2 is less than 7
2 is less than 8
4 is less than 5
4 is less than 7
4 is less than 8
5 is less than 7
5 is less than 8
6 is less than 7
6 is less than 8

SelectMany - Compound from 2

This C# example uses the LINQ SelectMany method to select all orders where the order total is less than 500.00.

LINQ

private void uiSelectMany_CF_2_LINQ_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.Total < 500.00M select new {c.CustomerID, o.OrderID, o.Total};

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.Linq, uiResult, sb);
}

LINQ Dynamic

private void uiSelectMany_CF_2_LINQ_Dynamic_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.Total < 500.00M select new {c.CustomerID, o.OrderID, o.Total};

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.LinqDynamic, uiResult, sb);
}

LINQ Execute

private void uiSelectMany_CF_2_LINQ_Execute_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.Total < 500.00M select new {c.CustomerID, o.OrderID, o.Total};

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.LinqExecute, uiResult, sb);
}

Result

LINQ Execute Test
------------------------------
CustomerID=ALFKI OrderID=10702 Total=330.00
CustomerID=ALFKI OrderID=10952 Total=471.20
CustomerID=ANATR OrderID=10308 Total=88.80
CustomerID=ANATR OrderID=10625 Total=479.75
CustomerID=ANATR OrderID=10759 Total=320.00
CustomerID=ANTON OrderID=10365 Total=403.20
CustomerID=ANTON OrderID=10682 Total=375.50
CustomerID=AROUT OrderID=10355 Total=480.00
CustomerID=AROUT OrderID=10453 Total=407.70
CustomerID=AROUT OrderID=10741 Total=228.00
CustomerID=AROUT OrderID=10743 Total=319.20
CustomerID=AROUT OrderID=10793 Total=191.10
CustomerID=AROUT OrderID=10864 Total=282.00
CustomerID=AROUT OrderID=10920 Total=390.00
CustomerID=AROUT OrderID=11016 Total=491.50
CustomerID=BERGS OrderID=10445 Total=174.90
CustomerID=BERGS OrderID=10689 Total=472.50
CustomerID=BERGS OrderID=10778 Total=96.50
CustomerID=BLAUS OrderID=10501 Total=149.00
CustomerID=BLAUS OrderID=10509 Total=136.80
CustomerID=BLAUS OrderID=10582 Total=330.00
CustomerID=BLAUS OrderID=10614 Total=464.00
CustomerID=BLONP OrderID=10628 Total=450.00
CustomerID=BOLID OrderID=10970 Total=224.00
CustomerID=BONAP OrderID=10331 Total=88.50
CustomerID=BONAP OrderID=10730 Total=484.26
CustomerID=BONAP OrderID=10732 Total=360.00
CustomerID=BONAP OrderID=10940 Total=360.00
CustomerID=BSBEV OrderID=10289 Total=479.40
CustomerID=BSBEV OrderID=10484 Total=386.20
CustomerID=BSBEV OrderID=10538 Total=139.80
CustomerID=BSBEV OrderID=10539 Total=355.50
CustomerID=BSBEV OrderID=10578 Total=477.00
CustomerID=BSBEV OrderID=10599 Total=493.00
CustomerID=BSBEV OrderID=10947 Total=220.00
CustomerID=CACTU OrderID=10521 Total=225.50
CustomerID=CACTU OrderID=10782 Total=12.50
CustomerID=CACTU OrderID=10819 Total=477.00
CustomerID=CACTU OrderID=10881 Total=150.00
CustomerID=CACTU OrderID=11054 Total=305.00
CustomerID=CENTC OrderID=10259 Total=100.80
CustomerID=COMMI OrderID=10466 Total=216.00
CustomerID=COMMI OrderID=10969 Total=108.00
CustomerID=COMMI OrderID=11042 Total=405.75
CustomerID=CONSH OrderID=10462 Total=156.00
CustomerID=DRACD OrderID=10363 Total=447.20
CustomerID=DRACD OrderID=10391 Total=86.40
CustomerID=DRACD OrderID=10797 Total=420.00
CustomerID=DRACD OrderID=11067 Total=86.85
CustomerID=DUMON OrderID=10311 Total=268.80
CustomerID=DUMON OrderID=10609 Total=424.00
CustomerID=DUMON OrderID=10683 Total=63.00
CustomerID=ERNSH OrderID=10771 Total=344.00
CustomerID=FAMIA OrderID=10386 Total=166.00
CustomerID=FAMIA OrderID=10414 Total=224.83
CustomerID=FAMIA OrderID=10581 Total=310.00
CustomerID=FAMIA OrderID=10725 Total=287.80
CustomerID=FOLKO OrderID=10378 Total=103.20
CustomerID=FOLKO OrderID=10434 Total=321.12
CustomerID=FOLKO OrderID=10460 Total=176.10
CustomerID=FOLKO OrderID=10824 Total=250.80
CustomerID=FOLKO OrderID=10955 Total=74.40
CustomerID=FOLKO OrderID=10980 Total=248.00
CustomerID=FRANS OrderID=10422 Total=49.80
CustomerID=FRANS OrderID=10710 Total=93.50
CustomerID=FRANS OrderID=10753 Total=88.00
CustomerID=FRANS OrderID=10807 Total=18.40
CustomerID=FRANS OrderID=11060 Total=266.00
CustomerID=FURIB OrderID=10352 Total=136.30
CustomerID=FURIB OrderID=10491 Total=259.50
CustomerID=FURIB OrderID=10604 Total=230.85
CustomerID=FURIB OrderID=10963 Total=57.80
CustomerID=GALED OrderID=10366 Total=136.00
CustomerID=GALED OrderID=10426 Total=338.20
CustomerID=GALED OrderID=10568 Total=155.00
CustomerID=GALED OrderID=10887 Total=70.00
CustomerID=GALED OrderID=10928 Total=137.50
CustomerID=GODOS OrderID=10874 Total=310.00
CustomerID=GODOS OrderID=11037 Total=60.00
CustomerID=GOURL OrderID=10652 Total=318.84
CustomerID=GOURL OrderID=10777 Total=224.00
CustomerID=GOURL OrderID=10959 Total=131.75
CustomerID=GOURL OrderID=11049 Total=273.60
CustomerID=GREAL OrderID=10528 Total=392.20
CustomerID=GREAL OrderID=10589 Total=72.00
CustomerID=GREAL OrderID=10936 Total=456.00
CustomerID=GREAL OrderID=11006 Total=329.68
CustomerID=GREAL OrderID=11040 Total=200.00
CustomerID=GROSR OrderID=10785 Total=387.50
CustomerID=HANAR OrderID=10770 Total=236.25
CustomerID=HANAR OrderID=10925 Total=475.15
CustomerID=HILAA OrderID=10476 Total=180.48
CustomerID=HILAA OrderID=10613 Total=353.20
CustomerID=HILAA OrderID=10705 Total=378.00
CustomerID=HILAA OrderID=10863 Total=441.15
CustomerID=HILAA OrderID=10960 Total=265.35
CustomerID=HUNGC OrderID=10375 Total=338.00
CustomerID=HUNGC OrderID=10394 Total=442.00
CustomerID=HUNGC OrderID=10415 Total=102.40
CustomerID=HUNGC OrderID=10600 Total=479.80
CustomerID=ISLAT OrderID=10318 Total=240.40
CustomerID=ISLAT OrderID=10321 Total=144.00
CustomerID=ISLAT OrderID=10473 Total=230.40
CustomerID=ISLAT OrderID=10674 Total=45.00
CustomerID=ISLAT OrderID=10798 Total=446.60
CustomerID=KOENE OrderID=10323 Total=164.40
CustomerID=KOENE OrderID=10506 Total=415.80
CustomerID=KOENE OrderID=10542 Total=469.11
CustomerID=LACOR OrderID=10972 Total=251.50
CustomerID=LACOR OrderID=10973 Total=291.55
CustomerID=LAMAI OrderID=10358 Total=429.40
CustomerID=LAMAI OrderID=10371 Total=72.96
CustomerID=LAMAI OrderID=10425 Total=360.00
CustomerID=LAMAI OrderID=10454 Total=331.20
CustomerID=LAMAI OrderID=10610 Total=299.25
CustomerID=LAMAI OrderID=10631 Total=55.80
CustomerID=LAMAI OrderID=10832 Total=475.11
CustomerID=LAMAI OrderID=11051 Total=36.00
CustomerID=LAUGB OrderID=10495 Total=278.00
CustomerID=LAUGB OrderID=10620 Total=57.50
CustomerID=LAUGB OrderID=10810 Total=187.00
CustomerID=LAZYK OrderID=10482 Total=147.00
CustomerID=LAZYK OrderID=10545 Total=210.00
CustomerID=LEHMS OrderID=10279 Total=351.00
CustomerID=LEHMS OrderID=10534 Total=465.70
CustomerID=LEHMS OrderID=10891 Total=368.93
CustomerID=LETSS OrderID=10579 Total=317.75
CustomerID=LILAS OrderID=10381 Total=112.00
CustomerID=LILAS OrderID=10899 Total=122.40
CustomerID=LILAS OrderID=11065 Total=189.42
CustomerID=LILAS OrderID=11071 Total=484.50
CustomerID=LINOD OrderID=10405 Total=400.00
CustomerID=LINOD OrderID=10840 Total=211.20
CustomerID=LINOD OrderID=11014 Total=243.18
CustomerID=LONEP OrderID=10307 Total=424.00
CustomerID=LONEP OrderID=10317 Total=288.00
CustomerID=LONEP OrderID=10544 Total=417.20
CustomerID=LONEP OrderID=10662 Total=125.00
CustomerID=LONEP OrderID=10867 Total=98.40
CustomerID=LONEP OrderID=10883 Total=36.00
CustomerID=MAGAA OrderID=10275 Total=291.84
CustomerID=MAGAA OrderID=10467 Total=235.20
CustomerID=MAGAA OrderID=10754 Total=55.20
CustomerID=MAGAA OrderID=10950 Total=110.00
CustomerID=MAISD OrderID=11004 Total=295.38
CustomerID=MEREP OrderID=10376 Total=399.00
CustomerID=MEREP OrderID=10505 Total=147.90
CustomerID=MORGK OrderID=10699 Total=114.00
CustomerID=MORGK OrderID=10945 Total=245.00
CustomerID=NORTS OrderID=10517 Total=352.00
CustomerID=NORTS OrderID=10752 Total=252.00
CustomerID=NORTS OrderID=11057 Total=45.00
CustomerID=OCEAN OrderID=10409 Total=319.20
CustomerID=OCEAN OrderID=10531 Total=110.00
CustomerID=OCEAN OrderID=10898 Total=30.00
CustomerID=OTTIK OrderID=10508 Total=240.00
CustomerID=PERIC OrderID=10322 Total=112.00
CustomerID=PERIC OrderID=11073 Total=300.00
CustomerID=PICCO OrderID=10489 Total=439.20
CustomerID=PRINI OrderID=10336 Total=285.12
CustomerID=QUEDE OrderID=10261 Total=448.00
CustomerID=QUEDE OrderID=10291 Total=497.52
CustomerID=QUEDE OrderID=10794 Total=314.76
CustomerID=QUICK OrderID=10313 Total=182.40
CustomerID=RANCH OrderID=10448 Total=443.40
CustomerID=RANCH OrderID=11019 Total=76.00
CustomerID=REGGC OrderID=10288 Total=80.10
CustomerID=REGGC OrderID=10428 Total=192.00
CustomerID=REGGC OrderID=10562 Total=488.70
CustomerID=REGGC OrderID=10586 Total=23.80
CustomerID=REGGC OrderID=10655 Total=154.40
CustomerID=REGGC OrderID=11062 Total=406.40
CustomerID=RICAR OrderID=10299 Total=349.50
CustomerID=RICAR OrderID=10648 Total=372.38
CustomerID=RICSU OrderID=10951 Total=458.76
CustomerID=RICSU OrderID=11075 Total=498.10
CustomerID=ROMEY OrderID=10281 Total=86.50
CustomerID=ROMEY OrderID=10282 Total=155.40
CustomerID=ROMEY OrderID=10306 Total=498.50
CustomerID=ROMEY OrderID=10917 Total=365.89
CustomerID=ROMEY OrderID=11013 Total=361.00
CustomerID=SANTG OrderID=10520 Total=200.00
CustomerID=SAVEA OrderID=10815 Total=40.00
CustomerID=SIMOB OrderID=10341 Total=352.60
CustomerID=SIMOB OrderID=11074 Total=232.08
CustomerID=SPECD OrderID=10738 Total=52.35
CustomerID=SPECD OrderID=10907 Total=108.50
CustomerID=SPECD OrderID=11043 Total=210.00
CustomerID=SPLIR OrderID=10271 Total=48.00
CustomerID=SPLIR OrderID=10349 Total=141.60
CustomerID=SPLIR OrderID=10432 Total=485.00
CustomerID=SPLIR OrderID=10974 Total=439.00
CustomerID=SUPRD OrderID=10767 Total=28.00
CustomerID=THEBI OrderID=10310 Total=336.00
CustomerID=THEBI OrderID=10708 Total=180.40
CustomerID=THEBI OrderID=10992 Total=69.60
CustomerID=THECR OrderID=10775 Total=228.00
CustomerID=THECR OrderID=11003 Total=326.00
CustomerID=TOMSP OrderID=10438 Total=454.00
CustomerID=TOMSP OrderID=10446 Total=246.24
CustomerID=TOMSP OrderID=10548 Total=240.10
CustomerID=TORTU OrderID=10276 Total=420.00
CustomerID=TORTU OrderID=11069 Total=360.00
CustomerID=TRADH OrderID=10496 Total=190.00
CustomerID=TRAIH OrderID=10822 Total=237.90
CustomerID=VAFFE OrderID=10602 Total=48.75
CustomerID=VICTE OrderID=10334 Total=144.80
CustomerID=VICTE OrderID=10450 Total=425.12
CustomerID=VICTE OrderID=10478 Total=471.20
CustomerID=VICTE OrderID=10806 Total=439.60
CustomerID=VICTE OrderID=10843 Total=159.00
CustomerID=VINET OrderID=10295 Total=121.60
CustomerID=VINET OrderID=10737 Total=139.80
CustomerID=VINET OrderID=10739 Total=240.00
CustomerID=WANDK OrderID=10348 Total=363.60
CustomerID=WANDK OrderID=10651 Total=397.80
CustomerID=WARTH OrderID=10266 Total=346.56
CustomerID=WARTH OrderID=10412 Total=334.80
CustomerID=WARTH OrderID=10437 Total=393.00
CustomerID=WARTH OrderID=11025 Total=270.00
CustomerID=WELLI OrderID=10585 Total=142.50
CustomerID=WELLI OrderID=10809 Total=140.00
CustomerID=WELLI OrderID=10900 Total=33.75
CustomerID=WELLI OrderID=10905 Total=342.00
CustomerID=WHITC OrderID=10723 Total=468.45
CustomerID=WILMK OrderID=10248 Total=440.00
CustomerID=WILMK OrderID=10615 Total=120.00
CustomerID=WILMK OrderID=10673 Total=412.35
CustomerID=WILMK OrderID=10873 Total=336.80
CustomerID=WILMK OrderID=10910 Total=452.90
CustomerID=WOLZA OrderID=10374 Total=459.00
CustomerID=WOLZA OrderID=10792 Total=399.85
CustomerID=WOLZA OrderID=10870 Total=160.00
CustomerID=WOLZA OrderID=10906 Total=427.50

SelectMany - Compound from 3

This C# example uses the LINQ SelectMany method with a dynamic expression to select all orders where the order was made in 1998 or later.

LINQ

private void uiSelectMany_CF_3_LINQ_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new {c.CustomerID, o.OrderID, o.OrderDate};

	var sb = new StringBuilder();
   
	My.Result.Show(My.LinqResultType.Linq, uiResult, sb);
}

LINQ Dynamic

private void uiSelectMany_CF_3_LINQ_Dynamic_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new {c.CustomerID, o.OrderID, o.OrderDate};

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.LinqDynamic, uiResult, sb);
}

LINQ Execute

private void uiSelectMany_CF_3_LINQ_Execute_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new {c.CustomerID, o.OrderID, o.OrderDate};

	var sb = new StringBuilder();

	My.Result.Show(My.LinqResultType.LinqExecute, uiResult, sb);
}

Result

LINQ Execute Test
------------------------------
CustomerID=ALFKI OrderID=10835 OrderDate=1/15/1998
CustomerID=ALFKI OrderID=10952 OrderDate=3/16/1998
CustomerID=ALFKI OrderID=11011 OrderDate=4/9/1998
CustomerID=ANATR OrderID=10926 OrderDate=3/4/1998
CustomerID=ANTON OrderID=10856 OrderDate=1/28/1998
CustomerID=AROUT OrderID=10864 OrderDate=2/2/1998
CustomerID=AROUT OrderID=10920 OrderDate=3/3/1998
CustomerID=AROUT OrderID=10953 OrderDate=3/16/1998
CustomerID=AROUT OrderID=11016 OrderDate=4/10/1998
CustomerID=BERGS OrderID=10837 OrderDate=1/16/1998
CustomerID=BERGS OrderID=10857 OrderDate=1/28/1998
CustomerID=BERGS OrderID=10866 OrderDate=2/3/1998
CustomerID=BERGS OrderID=10875 OrderDate=2/6/1998
CustomerID=BERGS OrderID=10924 OrderDate=3/4/1998
CustomerID=BLAUS OrderID=10853 OrderDate=1/27/1998
CustomerID=BLAUS OrderID=10956 OrderDate=3/17/1998
CustomerID=BLAUS OrderID=11058 OrderDate=4/29/1998
CustomerID=BLONP OrderID=10826 OrderDate=1/12/1998
CustomerID=BOLID OrderID=10970 OrderDate=3/24/1998
CustomerID=BONAP OrderID=10827 OrderDate=1/12/1998
CustomerID=BONAP OrderID=10871 OrderDate=2/5/1998
CustomerID=BONAP OrderID=10876 OrderDate=2/9/1998
CustomerID=BONAP OrderID=10932 OrderDate=3/6/1998
CustomerID=BONAP OrderID=10940 OrderDate=3/11/1998
CustomerID=BONAP OrderID=11076 OrderDate=5/6/1998
CustomerID=BOTTM OrderID=10918 OrderDate=3/2/1998
CustomerID=BOTTM OrderID=10944 OrderDate=3/12/1998
CustomerID=BOTTM OrderID=10949 OrderDate=3/13/1998
CustomerID=BOTTM OrderID=10975 OrderDate=3/25/1998
CustomerID=BOTTM OrderID=10982 OrderDate=3/27/1998
CustomerID=BOTTM OrderID=11027 OrderDate=4/16/1998
CustomerID=BOTTM OrderID=11045 OrderDate=4/23/1998
CustomerID=BOTTM OrderID=11048 OrderDate=4/24/1998
CustomerID=BSBEV OrderID=10943 OrderDate=3/11/1998
CustomerID=BSBEV OrderID=10947 OrderDate=3/13/1998
CustomerID=BSBEV OrderID=11023 OrderDate=4/14/1998
CustomerID=CACTU OrderID=10819 OrderDate=1/7/1998
CustomerID=CACTU OrderID=10881 OrderDate=2/11/1998
CustomerID=CACTU OrderID=10937 OrderDate=3/10/1998
CustomerID=CACTU OrderID=11054 OrderDate=4/28/1998
CustomerID=CHOPS OrderID=10966 OrderDate=3/20/1998
CustomerID=CHOPS OrderID=11029 OrderDate=4/16/1998
CustomerID=CHOPS OrderID=11041 OrderDate=4/22/1998
CustomerID=COMMI OrderID=10969 OrderDate=3/23/1998
CustomerID=COMMI OrderID=11042 OrderDate=4/22/1998
CustomerID=CONSH OrderID=10848 OrderDate=1/23/1998
CustomerID=DRACD OrderID=10825 OrderDate=1/9/1998
CustomerID=DRACD OrderID=11036 OrderDate=4/20/1998
CustomerID=DRACD OrderID=11067 OrderDate=5/4/1998
CustomerID=DUMON OrderID=10890 OrderDate=2/16/1998
CustomerID=EASTC OrderID=10987 OrderDate=3/31/1998
CustomerID=EASTC OrderID=11024 OrderDate=4/15/1998
CustomerID=EASTC OrderID=11047 OrderDate=4/24/1998
CustomerID=EASTC OrderID=11056 OrderDate=4/28/1998
CustomerID=ERNSH OrderID=10836 OrderDate=1/16/1998
CustomerID=ERNSH OrderID=10854 OrderDate=1/27/1998
CustomerID=ERNSH OrderID=10895 OrderDate=2/18/1998
CustomerID=ERNSH OrderID=10968 OrderDate=3/23/1998
CustomerID=ERNSH OrderID=10979 OrderDate=3/26/1998
CustomerID=ERNSH OrderID=10990 OrderDate=4/1/1998
CustomerID=ERNSH OrderID=11008 OrderDate=4/8/1998
CustomerID=ERNSH OrderID=11017 OrderDate=4/13/1998
CustomerID=ERNSH OrderID=11072 OrderDate=5/5/1998
CustomerID=FOLKO OrderID=10824 OrderDate=1/9/1998
CustomerID=FOLKO OrderID=10880 OrderDate=2/10/1998
CustomerID=FOLKO OrderID=10902 OrderDate=2/23/1998
CustomerID=FOLKO OrderID=10955 OrderDate=3/17/1998
CustomerID=FOLKO OrderID=10977 OrderDate=3/26/1998
CustomerID=FOLKO OrderID=10980 OrderDate=3/27/1998
CustomerID=FOLKO OrderID=10993 OrderDate=4/1/1998
CustomerID=FOLKO OrderID=11001 OrderDate=4/6/1998
CustomerID=FOLKO OrderID=11050 OrderDate=4/27/1998
CustomerID=FRANK OrderID=10859 OrderDate=1/29/1998
CustomerID=FRANK OrderID=10929 OrderDate=3/5/1998
CustomerID=FRANK OrderID=11012 OrderDate=4/9/1998
CustomerID=FRANR OrderID=10860 OrderDate=1/29/1998
CustomerID=FRANR OrderID=10971 OrderDate=3/24/1998
CustomerID=FRANS OrderID=11026 OrderDate=4/15/1998
CustomerID=FRANS OrderID=11060 OrderDate=4/30/1998
CustomerID=FURIB OrderID=10963 OrderDate=3/19/1998
CustomerID=GALED OrderID=10887 OrderDate=2/13/1998
CustomerID=GALED OrderID=10928 OrderDate=3/5/1998
CustomerID=GODOS OrderID=10872 OrderDate=2/5/1998
CustomerID=GODOS OrderID=10874 OrderDate=2/6/1998
CustomerID=GODOS OrderID=10888 OrderDate=2/16/1998
CustomerID=GODOS OrderID=10911 OrderDate=2/26/1998
CustomerID=GODOS OrderID=10948 OrderDate=3/13/1998
CustomerID=GODOS OrderID=11009 OrderDate=4/8/1998
CustomerID=GODOS OrderID=11037 OrderDate=4/21/1998
CustomerID=GOURL OrderID=10959 OrderDate=3/18/1998
CustomerID=GOURL OrderID=11049 OrderDate=4/24/1998
CustomerID=GREAL OrderID=10816 OrderDate=1/6/1998
CustomerID=GREAL OrderID=10936 OrderDate=3/9/1998
CustomerID=GREAL OrderID=11006 OrderDate=4/7/1998
CustomerID=GREAL OrderID=11040 OrderDate=4/22/1998
CustomerID=GREAL OrderID=11061 OrderDate=4/30/1998
CustomerID=HANAR OrderID=10886 OrderDate=2/13/1998
CustomerID=HANAR OrderID=10903 OrderDate=2/24/1998
CustomerID=HANAR OrderID=10922 OrderDate=3/3/1998
CustomerID=HANAR OrderID=10925 OrderDate=3/4/1998
CustomerID=HANAR OrderID=10981 OrderDate=3/27/1998
CustomerID=HANAR OrderID=11022 OrderDate=4/14/1998
CustomerID=HANAR OrderID=11052 OrderDate=4/27/1998
CustomerID=HILAA OrderID=10863 OrderDate=2/2/1998
CustomerID=HILAA OrderID=10901 OrderDate=2/23/1998
CustomerID=HILAA OrderID=10957 OrderDate=3/18/1998
CustomerID=HILAA OrderID=10960 OrderDate=3/19/1998
CustomerID=HILAA OrderID=10976 OrderDate=3/25/1998
CustomerID=HILAA OrderID=11055 OrderDate=4/28/1998
CustomerID=HUNGO OrderID=10897 OrderDate=2/19/1998
CustomerID=HUNGO OrderID=10912 OrderDate=2/26/1998
CustomerID=HUNGO OrderID=10985 OrderDate=3/30/1998
CustomerID=HUNGO OrderID=11063 OrderDate=4/30/1998
CustomerID=ISLAT OrderID=10829 OrderDate=1/13/1998
CustomerID=ISLAT OrderID=10933 OrderDate=3/6/1998
CustomerID=KOENE OrderID=10817 OrderDate=1/6/1998
CustomerID=KOENE OrderID=10849 OrderDate=1/23/1998
CustomerID=KOENE OrderID=10893 OrderDate=2/18/1998
CustomerID=KOENE OrderID=11028 OrderDate=4/16/1998
CustomerID=LACOR OrderID=10858 OrderDate=1/29/1998
CustomerID=LACOR OrderID=10927 OrderDate=3/5/1998
CustomerID=LACOR OrderID=10972 OrderDate=3/24/1998
CustomerID=LACOR OrderID=10973 OrderDate=3/24/1998
CustomerID=LAMAI OrderID=10832 OrderDate=1/14/1998
CustomerID=LAMAI OrderID=10923 OrderDate=3/3/1998
CustomerID=LAMAI OrderID=11051 OrderDate=4/27/1998
CustomerID=LAUGB OrderID=10810 OrderDate=1/1/1998
CustomerID=LEHMS OrderID=10862 OrderDate=1/30/1998
CustomerID=LEHMS OrderID=10891 OrderDate=2/17/1998
CustomerID=LEHMS OrderID=10934 OrderDate=3/9/1998
CustomerID=LEHMS OrderID=11070 OrderDate=5/5/1998
CustomerID=LETSS OrderID=10884 OrderDate=2/12/1998
CustomerID=LILAS OrderID=10823 OrderDate=1/9/1998
CustomerID=LILAS OrderID=10899 OrderDate=2/20/1998
CustomerID=LILAS OrderID=10997 OrderDate=4/3/1998
CustomerID=LILAS OrderID=11065 OrderDate=5/1/1998
CustomerID=LILAS OrderID=11071 OrderDate=5/5/1998
CustomerID=LINOD OrderID=10811 OrderDate=1/2/1998
CustomerID=LINOD OrderID=10838 OrderDate=1/19/1998
CustomerID=LINOD OrderID=10840 OrderDate=1/19/1998
CustomerID=LINOD OrderID=10919 OrderDate=3/2/1998
CustomerID=LINOD OrderID=10954 OrderDate=3/17/1998
CustomerID=LINOD OrderID=11014 OrderDate=4/10/1998
CustomerID=LINOD OrderID=11039 OrderDate=4/21/1998
CustomerID=LONEP OrderID=10867 OrderDate=2/3/1998
CustomerID=LONEP OrderID=10883 OrderDate=2/12/1998
CustomerID=LONEP OrderID=11018 OrderDate=4/13/1998
CustomerID=MAGAA OrderID=10818 OrderDate=1/7/1998
CustomerID=MAGAA OrderID=10939 OrderDate=3/10/1998
CustomerID=MAGAA OrderID=10950 OrderDate=3/16/1998
CustomerID=MAISD OrderID=10892 OrderDate=2/17/1998
CustomerID=MAISD OrderID=10896 OrderDate=2/19/1998
CustomerID=MAISD OrderID=10978 OrderDate=3/26/1998
CustomerID=MAISD OrderID=11004 OrderDate=4/7/1998
CustomerID=MORGK OrderID=10945 OrderDate=3/12/1998
CustomerID=NORTS OrderID=11057 OrderDate=4/29/1998
CustomerID=OCEAN OrderID=10898 OrderDate=2/20/1998
CustomerID=OCEAN OrderID=10958 OrderDate=3/18/1998
CustomerID=OCEAN OrderID=10986 OrderDate=3/30/1998
CustomerID=OLDWO OrderID=10855 OrderDate=1/27/1998
CustomerID=OLDWO OrderID=10965 OrderDate=3/20/1998
CustomerID=OLDWO OrderID=11034 OrderDate=4/20/1998
CustomerID=OTTIK OrderID=10833 OrderDate=1/15/1998
CustomerID=OTTIK OrderID=10999 OrderDate=4/3/1998
CustomerID=OTTIK OrderID=11020 OrderDate=4/14/1998
CustomerID=PERIC OrderID=10995 OrderDate=4/2/1998
CustomerID=PERIC OrderID=11073 OrderDate=5/5/1998
CustomerID=PICCO OrderID=10844 OrderDate=1/21/1998
CustomerID=PICCO OrderID=11053 OrderDate=4/27/1998
CustomerID=PRINI OrderID=10808 OrderDate=1/1/1998
CustomerID=PRINI OrderID=11007 OrderDate=4/8/1998
CustomerID=QUEDE OrderID=10989 OrderDate=3/31/1998
CustomerID=QUEEN OrderID=10868 OrderDate=2/4/1998
CustomerID=QUEEN OrderID=10913 OrderDate=2/26/1998
CustomerID=QUEEN OrderID=10914 OrderDate=2/27/1998
CustomerID=QUEEN OrderID=10961 OrderDate=3/19/1998
CustomerID=QUEEN OrderID=11068 OrderDate=5/4/1998
CustomerID=QUICK OrderID=10845 OrderDate=1/21/1998
CustomerID=QUICK OrderID=10865 OrderDate=2/2/1998
CustomerID=QUICK OrderID=10878 OrderDate=2/10/1998
CustomerID=QUICK OrderID=10938 OrderDate=3/10/1998
CustomerID=QUICK OrderID=10962 OrderDate=3/19/1998
CustomerID=QUICK OrderID=10991 OrderDate=4/1/1998
CustomerID=QUICK OrderID=10996 OrderDate=4/2/1998
CustomerID=QUICK OrderID=11021 OrderDate=4/14/1998
CustomerID=RANCH OrderID=10828 OrderDate=1/13/1998
CustomerID=RANCH OrderID=10916 OrderDate=2/27/1998
CustomerID=RANCH OrderID=11019 OrderDate=4/13/1998
CustomerID=RATTC OrderID=10820 OrderDate=1/7/1998
CustomerID=RATTC OrderID=10852 OrderDate=1/26/1998
CustomerID=RATTC OrderID=10889 OrderDate=2/16/1998
CustomerID=RATTC OrderID=10988 OrderDate=3/31/1998
CustomerID=RATTC OrderID=11000 OrderDate=4/6/1998
CustomerID=RATTC OrderID=11077 OrderDate=5/6/1998
CustomerID=REGGC OrderID=10812 OrderDate=1/2/1998
CustomerID=REGGC OrderID=10908 OrderDate=2/26/1998
CustomerID=REGGC OrderID=10942 OrderDate=3/11/1998
CustomerID=REGGC OrderID=11010 OrderDate=4/9/1998
CustomerID=REGGC OrderID=11062 OrderDate=4/30/1998
CustomerID=RICAR OrderID=10813 OrderDate=1/5/1998
CustomerID=RICAR OrderID=10851 OrderDate=1/26/1998
CustomerID=RICAR OrderID=10877 OrderDate=2/9/1998
CustomerID=RICAR OrderID=11059 OrderDate=4/29/1998
CustomerID=RICSU OrderID=10931 OrderDate=3/6/1998
CustomerID=RICSU OrderID=10951 OrderDate=3/16/1998
CustomerID=RICSU OrderID=11033 OrderDate=4/17/1998
CustomerID=RICSU OrderID=11075 OrderDate=5/6/1998
CustomerID=ROMEY OrderID=10917 OrderDate=3/2/1998
CustomerID=ROMEY OrderID=11013 OrderDate=4/9/1998
CustomerID=SANTG OrderID=10831 OrderDate=1/14/1998
CustomerID=SANTG OrderID=10909 OrderDate=2/26/1998
CustomerID=SANTG OrderID=11015 OrderDate=4/10/1998
CustomerID=SAVEA OrderID=10815 OrderDate=1/5/1998
CustomerID=SAVEA OrderID=10847 OrderDate=1/22/1998
CustomerID=SAVEA OrderID=10882 OrderDate=2/11/1998
CustomerID=SAVEA OrderID=10894 OrderDate=2/18/1998
CustomerID=SAVEA OrderID=10941 OrderDate=3/11/1998
CustomerID=SAVEA OrderID=10983 OrderDate=3/27/1998
CustomerID=SAVEA OrderID=10984 OrderDate=3/30/1998
CustomerID=SAVEA OrderID=11002 OrderDate=4/6/1998
CustomerID=SAVEA OrderID=11030 OrderDate=4/17/1998
CustomerID=SAVEA OrderID=11031 OrderDate=4/17/1998
CustomerID=SAVEA OrderID=11064 OrderDate=5/1/1998
CustomerID=SEVES OrderID=10869 OrderDate=2/4/1998
CustomerID=SIMOB OrderID=11074 OrderDate=5/6/1998
CustomerID=SPECD OrderID=10907 OrderDate=2/25/1998
CustomerID=SPECD OrderID=10964 OrderDate=3/20/1998
CustomerID=SPECD OrderID=11043 OrderDate=4/22/1998
CustomerID=SPLIR OrderID=10821 OrderDate=1/8/1998
CustomerID=SPLIR OrderID=10974 OrderDate=3/25/1998
CustomerID=SUPRD OrderID=10841 OrderDate=1/20/1998
CustomerID=SUPRD OrderID=10846 OrderDate=1/22/1998
CustomerID=SUPRD OrderID=10885 OrderDate=2/12/1998
CustomerID=SUPRD OrderID=10930 OrderDate=3/6/1998
CustomerID=SUPRD OrderID=11035 OrderDate=4/20/1998
CustomerID=SUPRD OrderID=11038 OrderDate=4/21/1998
CustomerID=THEBI OrderID=10992 OrderDate=4/1/1998
CustomerID=THECR OrderID=11003 OrderDate=4/6/1998
CustomerID=TOMSP OrderID=10967 OrderDate=3/23/1998
CustomerID=TORTU OrderID=10842 OrderDate=1/20/1998
CustomerID=TORTU OrderID=10915 OrderDate=2/27/1998
CustomerID=TORTU OrderID=11069 OrderDate=5/4/1998
CustomerID=TRADH OrderID=10830 OrderDate=1/13/1998
CustomerID=TRADH OrderID=10834 OrderDate=1/15/1998
CustomerID=TRADH OrderID=10839 OrderDate=1/19/1998
CustomerID=TRAIH OrderID=10822 OrderDate=1/8/1998
CustomerID=VAFFE OrderID=10921 OrderDate=3/3/1998
CustomerID=VAFFE OrderID=10946 OrderDate=3/12/1998
CustomerID=VAFFE OrderID=10994 OrderDate=4/2/1998
CustomerID=VICTE OrderID=10814 OrderDate=1/5/1998
CustomerID=VICTE OrderID=10843 OrderDate=1/21/1998
CustomerID=VICTE OrderID=10850 OrderDate=1/23/1998
CustomerID=WANDK OrderID=11046 OrderDate=4/23/1998
CustomerID=WARTH OrderID=11025 OrderDate=4/15/1998
CustomerID=WELLI OrderID=10809 OrderDate=1/1/1998
CustomerID=WELLI OrderID=10900 OrderDate=2/20/1998
CustomerID=WELLI OrderID=10905 OrderDate=2/24/1998
CustomerID=WELLI OrderID=10935 OrderDate=3/9/1998
CustomerID=WHITC OrderID=10861 OrderDate=1/30/1998
CustomerID=WHITC OrderID=10904 OrderDate=2/24/1998
CustomerID=WHITC OrderID=11032 OrderDate=4/17/1998
CustomerID=WHITC OrderID=11066 OrderDate=5/1/1998
CustomerID=WILMK OrderID=10873 OrderDate=2/6/1998
CustomerID=WILMK OrderID=10879 OrderDate=2/10/1998
CustomerID=WILMK OrderID=10910 OrderDate=2/26/1998
CustomerID=WILMK OrderID=11005 OrderDate=4/7/1998
CustomerID=WOLZA OrderID=10870 OrderDate=2/4/1998
CustomerID=WOLZA OrderID=10906 OrderDate=2/25/1998
CustomerID=WOLZA OrderID=10998 OrderDate=4/3/1998
CustomerID=WOLZA OrderID=11044 OrderDate=4/23/1998

SelectMany - from Assignment

This C# example uses the LINQ SelectMany method with a dynamic expression to select all orders where the order total is greater than 2000.00 and uses from assignment to avoid requesting the total twice.

LINQ

private void uiSelectMany_From_Assignment_LINQ_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.Linq, uiResult, sb);
}

LINQ Dynamic

private void uiSelectMany_From_Assignment_LINQ_Dynamic_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();		

	My.Result.Show(My.LinqResultType.LinqDynamic, uiResult, sb);
}

LINQ Execute

private void uiSelectMany_From_Assignment_LINQ_Execute_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.LinqExecute, uiResult, sb);
}

Result

LINQ Execute Test
------------------------------
CustomerID=ANTON OrderID=10573 Total=2082.00
CustomerID=AROUT OrderID=10558 Total=2142.90
CustomerID=AROUT OrderID=10953 Total=4441.25
CustomerID=BERGS OrderID=10384 Total=2222.40
CustomerID=BERGS OrderID=10524 Total=3192.65
CustomerID=BERGS OrderID=10672 Total=3815.25
CustomerID=BERGS OrderID=10857 Total=2048.21
CustomerID=BLONP OrderID=10360 Total=7390.20
CustomerID=BOLID OrderID=10801 Total=3026.85
CustomerID=BONAP OrderID=10340 Total=2436.18
CustomerID=BONAP OrderID=10511 Total=2550.00
CustomerID=BOTTM OrderID=10742 Total=3118.00
CustomerID=BOTTM OrderID=10949 Total=4422.00
CustomerID=CHOPS OrderID=10519 Total=2314.20
CustomerID=CHOPS OrderID=10746 Total=2311.70
CustomerID=COMMI OrderID=10290 Total=2169.00
CustomerID=EASTC OrderID=10400 Total=3063.00
CustomerID=EASTC OrderID=10987 Total=2772.00
CustomerID=EASTC OrderID=11056 Total=3740.00
CustomerID=ERNSH OrderID=10351 Total=5398.72
CustomerID=ERNSH OrderID=10382 Total=2900.00
CustomerID=ERNSH OrderID=10390 Total=2090.88
CustomerID=ERNSH OrderID=10402 Total=2713.50
CustomerID=ERNSH OrderID=10430 Total=4899.20
CustomerID=ERNSH OrderID=10514 Total=8623.45
CustomerID=ERNSH OrderID=10595 Total=4725.00
CustomerID=ERNSH OrderID=10633 Total=5510.59
CustomerID=ERNSH OrderID=10698 Total=3436.44
CustomerID=ERNSH OrderID=10764 Total=2286.00
CustomerID=ERNSH OrderID=10773 Total=2030.40
CustomerID=ERNSH OrderID=10776 Total=6635.28
CustomerID=ERNSH OrderID=10795 Total=2158.00
CustomerID=ERNSH OrderID=10836 Total=4705.50
CustomerID=ERNSH OrderID=10854 Total=2966.50
CustomerID=ERNSH OrderID=10895 Total=6379.40
CustomerID=ERNSH OrderID=10979 Total=4813.50
CustomerID=ERNSH OrderID=10990 Total=4288.85
CustomerID=ERNSH OrderID=11008 Total=4680.90
CustomerID=ERNSH OrderID=11017 Total=6750.00
CustomerID=ERNSH OrderID=11072 Total=5218.00
CustomerID=FOLIG OrderID=10634 Total=4985.50
CustomerID=FOLIG OrderID=10789 Total=3687.00
CustomerID=FOLKO OrderID=10533 Total=2222.20
CustomerID=FOLKO OrderID=10561 Total=2844.50
CustomerID=FOLKO OrderID=10703 Total=2545.00
CustomerID=FOLKO OrderID=10762 Total=4337.00
CustomerID=FOLKO OrderID=10977 Total=2233.00
CustomerID=FOLKO OrderID=10993 Total=4895.44
CustomerID=FOLKO OrderID=11001 Total=2769.00
CustomerID=FRANK OrderID=10267 Total=3536.60
CustomerID=FRANK OrderID=10337 Total=2467.00
CustomerID=FRANK OrderID=10670 Total=2301.75
CustomerID=FRANK OrderID=11012 Total=2825.30
CustomerID=GODOS OrderID=10629 Total=2775.05
CustomerID=GODOS OrderID=10872 Total=2058.46
CustomerID=GODOS OrderID=10948 Total=2362.25
CustomerID=GOURL OrderID=10709 Total=3424.00
CustomerID=GREAL OrderID=10616 Total=4807.00
CustomerID=GREAL OrderID=10816 Total=8446.45
CustomerID=HANAR OrderID=10886 Total=3127.50
CustomerID=HANAR OrderID=10981 Total=15810.00
CustomerID=HILAA OrderID=10395 Total=2122.92
CustomerID=HILAA OrderID=10490 Total=3163.20
CustomerID=HILAA OrderID=10601 Total=2285.00
CustomerID=HILAA OrderID=10641 Total=2054.00
CustomerID=HILAA OrderID=10796 Total=2341.36
CustomerID=HUNGO OrderID=10298 Total=2645.00
CustomerID=HUNGO OrderID=10335 Total=2036.16
CustomerID=HUNGO OrderID=10503 Total=2048.50
CustomerID=HUNGO OrderID=10516 Total=2381.05
CustomerID=HUNGO OrderID=10567 Total=2519.00
CustomerID=HUNGO OrderID=10687 Total=4960.90
CustomerID=HUNGO OrderID=10701 Total=2864.50
CustomerID=HUNGO OrderID=10897 Total=10835.24
CustomerID=HUNGO OrderID=10912 Total=6200.55
CustomerID=HUNGO OrderID=10985 Total=2023.38
CustomerID=KOENE OrderID=10718 Total=3463.00
CustomerID=KOENE OrderID=10817 Total=10952.84
CustomerID=KOENE OrderID=10893 Total=5502.11
CustomerID=KOENE OrderID=11028 Total=2160.00
CustomerID=LAMAI OrderID=10413 Total=2123.20
CustomerID=LAMAI OrderID=10787 Total=2622.76
CustomerID=LEHMS OrderID=10522 Total=2318.24
CustomerID=LEHMS OrderID=10772 Total=3603.22
CustomerID=LILAS OrderID=10823 Total=2826.00
CustomerID=LINOD OrderID=10638 Total=2720.05
CustomerID=LINOD OrderID=11039 Total=3090.00
CustomerID=MAISD OrderID=10760 Total=2917.00
CustomerID=MAISD OrderID=10892 Total=2090.00
CustomerID=MEREP OrderID=10339 Total=3354.00
CustomerID=MEREP OrderID=10424 Total=9194.56
CustomerID=MEREP OrderID=10570 Total=2465.25
CustomerID=MEREP OrderID=10605 Total=4109.70
CustomerID=MEREP OrderID=10618 Total=2697.50
CustomerID=MORGK OrderID=10575 Total=2147.40
CustomerID=OCEAN OrderID=10986 Total=2220.00
CustomerID=OLDWO OrderID=10305 Total=3741.30
CustomerID=OLDWO OrderID=10855 Total=2227.89
CustomerID=OTTIK OrderID=10766 Total=2310.00
CustomerID=PICCO OrderID=10353 Total=8593.28
CustomerID=PICCO OrderID=10530 Total=4180.00
CustomerID=PICCO OrderID=11053 Total=3055.00
CustomerID=PRINI OrderID=11007 Total=2633.90
CustomerID=QUEEN OrderID=10372 Total=9210.90
CustomerID=QUEEN OrderID=10637 Total=2761.94
CustomerID=QUEEN OrderID=11068 Total=2027.08
CustomerID=QUICK OrderID=10273 Total=2037.28
CustomerID=QUICK OrderID=10286 Total=3016.00
CustomerID=QUICK OrderID=10345 Total=2924.80
CustomerID=QUICK OrderID=10361 Total=2046.24
CustomerID=QUICK OrderID=10451 Total=3849.66
CustomerID=QUICK OrderID=10515 Total=9921.30
CustomerID=QUICK OrderID=10540 Total=10191.70
CustomerID=QUICK OrderID=10549 Total=3554.28
CustomerID=QUICK OrderID=10588 Total=3120.00
CustomerID=QUICK OrderID=10658 Total=4464.60
CustomerID=QUICK OrderID=10691 Total=10164.80
CustomerID=QUICK OrderID=10694 Total=4825.00
CustomerID=QUICK OrderID=10745 Total=4529.80
CustomerID=QUICK OrderID=10845 Total=3812.70
CustomerID=QUICK OrderID=10865 Total=16387.50
CustomerID=QUICK OrderID=10938 Total=2731.88
CustomerID=QUICK OrderID=10962 Total=3584.00
CustomerID=QUICK OrderID=10991 Total=2296.00
CustomerID=QUICK OrderID=11021 Total=6306.24
CustomerID=RATTC OrderID=10314 Total=2094.30
CustomerID=RATTC OrderID=10316 Total=2835.00
CustomerID=RATTC OrderID=10401 Total=3868.60
CustomerID=RATTC OrderID=10479 Total=10495.60
CustomerID=RATTC OrderID=10598 Total=2388.50
CustomerID=RATTC OrderID=10852 Total=2984.00
CustomerID=RATTC OrderID=10889 Total=11380.00
CustomerID=RATTC OrderID=10988 Total=3574.80
CustomerID=RICAR OrderID=10851 Total=2603.00
CustomerID=RICSU OrderID=10255 Total=2490.50
CustomerID=RICSU OrderID=10419 Total=2097.60
CustomerID=RICSU OrderID=10666 Total=4666.94
CustomerID=RICSU OrderID=11033 Total=3232.80
CustomerID=SANTG OrderID=10831 Total=2684.40
CustomerID=SAVEA OrderID=10324 Total=5275.72
CustomerID=SAVEA OrderID=10393 Total=2556.95
CustomerID=SAVEA OrderID=10398 Total=2505.60
CustomerID=SAVEA OrderID=10440 Total=4924.14
CustomerID=SAVEA OrderID=10452 Total=2018.50
CustomerID=SAVEA OrderID=10510 Total=4707.54
CustomerID=SAVEA OrderID=10555 Total=2944.40
CustomerID=SAVEA OrderID=10607 Total=6475.40
CustomerID=SAVEA OrderID=10612 Total=6375.00
CustomerID=SAVEA OrderID=10657 Total=4371.60
CustomerID=SAVEA OrderID=10678 Total=5256.50
CustomerID=SAVEA OrderID=10711 Total=4451.70
CustomerID=SAVEA OrderID=10713 Total=2827.90
CustomerID=SAVEA OrderID=10714 Total=2205.75
CustomerID=SAVEA OrderID=10748 Total=2196.00
CustomerID=SAVEA OrderID=10757 Total=3082.00
CustomerID=SAVEA OrderID=10847 Total=4931.92
CustomerID=SAVEA OrderID=10894 Total=2753.10
CustomerID=SAVEA OrderID=10941 Total=4011.75
CustomerID=SAVEA OrderID=11030 Total=12615.05
CustomerID=SAVEA OrderID=11031 Total=2393.50
CustomerID=SAVEA OrderID=11064 Total=4330.40
CustomerID=SEVES OrderID=10359 Total=3471.68
CustomerID=SEVES OrderID=10523 Total=2444.31
CustomerID=SEVES OrderID=10804 Total=2278.40
CustomerID=SIMOB OrderID=10417 Total=11188.40
CustomerID=SIMOB OrderID=10802 Total=2942.81
CustomerID=SPECD OrderID=10964 Total=2052.50
CustomerID=SPLIR OrderID=10329 Total=4578.43
CustomerID=SPLIR OrderID=10369 Total=2390.40
CustomerID=SUPRD OrderID=10252 Total=3597.90
CustomerID=SUPRD OrderID=10302 Total=2708.80
CustomerID=SUPRD OrderID=10458 Total=3891.00
CustomerID=SUPRD OrderID=10841 Total=4581.00
CustomerID=SUPRD OrderID=10930 Total=2255.50
CustomerID=THEBI OrderID=10805 Total=2775.00
CustomerID=TORTU OrderID=10518 Total=4150.05
CustomerID=VAFFE OrderID=10465 Total=2518.00
CustomerID=VAFFE OrderID=10688 Total=3160.60
CustomerID=VICTE OrderID=10546 Total=2812.00
CustomerID=WARTH OrderID=10455 Total=2684.00
CustomerID=WARTH OrderID=10583 Total=2237.50
CustomerID=WHITC OrderID=10344 Total=2296.00
CustomerID=WHITC OrderID=10693 Total=2071.20
CustomerID=WHITC OrderID=10861 Total=3523.40
CustomerID=WHITC OrderID=11032 Total=8902.50

SelectMany - Multiple from

This C# example uses the LINQ SelectMany method with a dynamic expression to filter on customers before selecting their orders. This makes the query more efficient by not selecting and then discarding orders for customers outside of Washington.

LINQ

private void uiSelectMany_Multiple_From_LINQ_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.Linq, uiResult, sb);
}

LINQ Dynamic

private void uiSelectMany_Multiple_From_LINQ_Dynamic_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.LinqDynamic, uiResult, sb);
}

LINQ Execute

private void uiSelectMany_Multiple_From_LINQ_Execute_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.LinqExecute, uiResult, sb);
}

Result

LINQ Execute Test
------------------------------
CustomerID=LAZYK OrderID=10482
CustomerID=LAZYK OrderID=10545
CustomerID=TRAIH OrderID=10574
CustomerID=TRAIH OrderID=10577
CustomerID=TRAIH OrderID=10822
CustomerID=WHITC OrderID=10469
CustomerID=WHITC OrderID=10483
CustomerID=WHITC OrderID=10504
CustomerID=WHITC OrderID=10596
CustomerID=WHITC OrderID=10693
CustomerID=WHITC OrderID=10696
CustomerID=WHITC OrderID=10723
CustomerID=WHITC OrderID=10740
CustomerID=WHITC OrderID=10861
CustomerID=WHITC OrderID=10904
CustomerID=WHITC OrderID=11032
CustomerID=WHITC OrderID=11066

SelectMany - Indexed

This C# example uses the LINQ Indexed SelectMany method with a dynamic expression to select all orders, while referring to customers by the order in which they are returned from the query.

LINQ

private void uiSelectMany_Indexed_LINQ_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.Linq, uiResult, sb);
}

LINQ Dynamic

private void uiSelectMany_Indexed_LINQ_Dynamic_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();
	
	My.Result.Show(My.LinqResultType.LinqDynamic, uiResult, sb);
}

LINQ Execute

private void uiSelectMany_Indexed_LINQ_Execute_Click(object sender, EventArgs e)
{
	var customers = My.GetCustomerList();

	var orders = from c in customers from o in c.Orders where o.OrderDate >= new DateTime(1998, 1, 1) select new { c.CustomerID, o.OrderID, o.OrderDate };

	var sb = new StringBuilder();

	My.Result.Show(My.LinqResultType.LinqExecute, uiResult, sb);
}

Result

LINQ Execute Test
------------------------------
Customer #1 has an order with OrderID 10643
Customer #1 has an order with OrderID 10692
Customer #1 has an order with OrderID 10702
Customer #1 has an order with OrderID 10835
Customer #1 has an order with OrderID 10952
Customer #1 has an order with OrderID 11011
Customer #2 has an order with OrderID 10308
Customer #2 has an order with OrderID 10625
Customer #2 has an order with OrderID 10759
Customer #2 has an order with OrderID 10926

...
Customer #90 has an order with OrderID 10248
Customer #90 has an order with OrderID 10615
Customer #90 has an order with OrderID 10673
Customer #90 has an order with OrderID 10695
Customer #90 has an order with OrderID 10873
Customer #90 has an order with OrderID 10879
Customer #90 has an order with OrderID 10910
Customer #90 has an order with OrderID 11005
Customer #91 has an order with OrderID 10374
Customer #91 has an order with OrderID 10611
Customer #91 has an order with OrderID 10792
Customer #91 has an order with OrderID 10870
Customer #91 has an order with OrderID 10906
Customer #91 has an order with OrderID 10998
Customer #91 has an order with OrderID 11044