Use of the find method in list in C #

To find a value in the list, you can use the loop traversal comparison to find the result. The find method is provided in C # and can be directly used as long as the search condition is passed in. As follows:

Public class recordinfo
{
Private string recordid = string. empty;
Private string Itemid = string. empty;
Private string recordanditemid = string. empty;
Private string value = string. empty;

Public String recordid
{
Get
{
Return this. recordid;
}
}

Public String Itemid
{
Get
{
Return this. Itemid;
}
}

Public String recordanditemid
{
Get
{
Return this. recordanditemid;
}
}

Public String Value
{
Get
{
Return this. value;
}
}

Public recordinfo (string tmprecordid, string tmpitemid, string tmprecordanditemid, string tmpvalue)
{
This. recordid = tmprecordid;
This. Itemid = tmpitemid;
This. recordanditemid = tmprecordanditemid;
This. value = tmpvalue;
}
}

 

1. Class Program
2. {
3. Public static void main (string [] ARGs)
4. {
5. List <user> usercollection = new list <user> ();
7. Usercollection. Add (new user (1, "testone "));
9. Usercollection. Add (new user (2, "testtwo "));
11. Usercollection. Add (new user (3, "testthree "));
13. User resultuser = usercollection. Find (
15. Delegate (User user)
16. {
17. // Return user. userid = 0;
19. Return user. userid = 1 & User. username. Equals ("testone ");
20. });
22. Console. writeline (resultuser! = NULL?
24. Resultuser. userid + system. environment. newline + resultuser. Username: "Not Found ");
26. Console. Readline ();
27. }
28. }
30. Public class user
31. {
32. Private int userid = 0;
34. Private string username = string. empty;
36. Public int userid
37. {
38. Get
39. {
40. Return this. userid;
41. }
42. }
44. Public String Username
45. {
46. Get
47. {
48. Return this. Username;
49. }
50. }
52. Public user (INT userid, string username)
53. {
54. This. userid = userid;
56. This. Username = username;
57. }
58. }