Dynamically construct the lambda expression of orderby

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01. Public class employee
02 .{
03. Public int ID {Get; set ;}
04. Public string name {Get; set ;}
05. Public decimal pay {Get; set ;}
06. Public float height {Get; set ;}
07 .}
Public class employee
{
Public int ID {Get; set ;}
Public string name {Get; set ;}
Public decimal pay {Get; set ;}
Public float height {Get; set ;}
}

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01. Class Program
02 .{
03. Static void main (string [] ARGs)
04 .{
05.
06. ilist <employee> List = new list <employee> ();
07.
08. List. Add (new employee () {id = 2, name = "D", Height = 175.50f, pay = 6000.45 m });
09. List. Add (new employee () {id = 4, name = "A", Height = 178.00f, pay = 4500.8 m });
10. List. Add (new employee () {id = 5, name = "C", Height = 173.54f, pay = 7500.11 m });
11. List. Add (new employee () {id = 1, name = "B", Height = 180.15f, pay = 8000.2 m });
12. List. Add (new employee () {id = 3, name = "E", Height = 182.3f, pay = 5500.70 m });
13.
14. Console. writeline ("output list (before ID sorting )");
15.
16. stringbuilder builder = new stringbuilder ();
17.
18. foreach (var I in List)
19 .{
20. Builder. appendformat ("{0},", I. ID );
21 .}
22.
23. Console. writeline (builder. tostring (). trimend (','));
24. Console. writeline ("");
25.
26. Console. writeline ("output list (sorted by ID )");
27.
28. List = ilistorderby <employee> (list, "ID ");
29.
30. Builder. Length = 0;
31.
32. foreach (var I in List)
33 .{
34. Builder. appendformat ("{0},", I. ID );
35 .}
36.
37. Console. writeline (builder. tostring (). trimend (','));
38. Console. writeline ("");
39.
40.
41. Console. writeline ("output list (before name sorting )");
42.
43. Builder. Length = 0;
44.
45. foreach (var I in List)
46 .{
47. Builder. appendformat ("{0},", I. Name );
48 .}
49.
50. Console. writeline (builder. tostring (). trimend (','));
51. Console. writeline ("");
52.
53. Console. writeline ("output list (sorted by name )");
54.
55. List = ilistorderby <employee> (list, "name ");
56.
57. Builder. Length = 0;
58.
59. foreach (var I in List)
60 .{
61. Builder. appendformat ("{0},", I. Name );
62 .}
63.
64. Console. writeline (builder. tostring (). trimend (','));
65. Console. writeline ("");
66.
67. var templist = ilistorderby <employee> (list, "height ");
68.
69. Console. writeline ("output list (before height sorting) \ t output list (after height sorting )");
70.
71. For (INT I = 0, Len = List. Count; I <Len; I ++)
72 .{
73. console. writeline ("\ t {0} \ t {1}", list [I]. height, templist [I]. height );
74 .}
75.
76. Console. writeline ("");
77.
78. templist = ilistorderby <employee> (list, "Pay ");
79.
80. Console. writeline ("output list (before pay sorting) \ t output list (after pay sorting )");
81.
82. For (INT I = 0, Len = List. Count; I <Len; I ++)
83 .{
84. Console. writeline ("\ t {0} \ t {1}", list [I]. Pay, templist [I]. Pay );
85 .}
86 .}
Class Program
{
Static void main (string [] ARGs)
{

Ilist <employee> List = new list <employee> ();

List. Add (new employee () {id = 2, name = "D", Height = 175.50f, pay = 6000.45 m });
List. Add (new employee () {id = 4, name = "A", Height = 178.00f, pay = 4500.8 m });
List. Add (new employee () {id = 5, name = "C", Height = 173.54f, pay = 7500.11 m });
List. Add (new employee () {id = 1, name = "B", Height = 180.15f, pay = 8000.2 m });
List. Add (new employee () {id = 3, name = "E", Height = 182.3f, pay = 5500.70 m });

Console. writeline ("output list (before ID sorting )");

Stringbuilder builder = new stringbuilder ();

Foreach (var I in List)
{
Builder. appendformat ("{0},", I. ID );
}

Console. writeline (builder. tostring (). trimend (','));
Console. writeline ("");

Console. writeline ("output list (sorted by ID )");

List = ilistorderby <employee> (list, "ID ");

Builder. Length = 0;

Foreach (var I in List)
{
Builder. appendformat ("{0},", I. ID );
}

Console. writeline (builder. tostring (). trimend (','));
Console. writeline ("");

Console. writeline ("output list (before name sorting )");

Builder. Length = 0;

Foreach (var I in List)
{
Builder. appendformat ("{0},", I. Name );
}

Console. writeline (builder. tostring (). trimend (','));
Console. writeline ("");

Console. writeline ("output list (sorted by name )");

List = ilistorderby <employee> (list, "name ");

Builder. Length = 0;

Foreach (var I in List)
{
Builder. appendformat ("{0},", I. Name );
}

Console. writeline (builder. tostring (). trimend (','));
Console. writeline ("");

VaR templist = ilistorderby <employee> (list, "height ");

Console. writeline ("output list (before height sorting) \ t output list (after height sorting )");

For (INT I = 0, Len = List. Count; I <Len; I ++)
{
Console. writeline ("\ t {0} \ t {1}", list [I]. Height, templist [I]. Height );
}

Console. writeline ("");

Templist = ilistorderby <employee> (list, "Pay ");

Console. writeline ("output list (before pay sorting) \ t output list (after pay sorting )");

For (INT I = 0, Len = List. Count; I <Len; I ++)
{
Console. writeline ("\ t {0} \ t {1}", list [I]. Pay, templist [I]. Pay );
}
}

 

 

 

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