How To Convert Var To List?

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hi

C#

List<object> d = new List<object>();


      var q = (from t1 in Bank.Users join t2 in Bank.Questions on t1.Id equals t2.Id_Users select new { t1.Id, t1.Name }).ToList();

how to Convert Var To List?!!!
Thanks So Much

Posted 27-Aug-12 5:19am

Seyed Ahmad Mirzaee

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Christian Amado 27-Aug-12 14:47pm

var is already a List! What error do you have?

AmitGajjar 27-Aug-12 22:13pm

Why you have used List<object> if you know the type of generic then best practice is to use that. Here i think you can create your own class and use it like List<bank> instead of List<object>

3 solutions

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pramod.hegde · Answer 1 · 2012-08-27T05:48:00

Let's make it more readable than just keeping it in objects.
Have a class or a struct called UserInfo (lets' assume).

C#

public class UserInfo
{
     public int Id { get;set; }
     public string Name { get;set; }
}

Define the list/enumeration.

C#

List<UserInfo> d = new List<UserInfo>();

Slightly alter your query.

C#

var q = (from t1 in Bank.Users 
         join t2 in Bank.Questions 
         on t1.Id equals t2.Id_Users 
         select new UserInfo
         { 
           Id = t1.Id, 
           Name = t1.Name 
         });

Now, q is an IEnumerable<UserInfo>. You can convert it to list using .ToList() method.

C#

d = q.ToList();

Santhosh Kumar Jayaraman · Answer 2 · 2012-08-27T05:29:00

Solution 1

XML

List<object> d = (from t1 in Bank.Users join t2 in Bank.Questions on t1.Id equals t2.Id_Users select new { t1.Id, t1.Name }).ToList();

Posted 27-Aug-12 5:29am

Santhosh Kumar Jayaraman

Comments

Seyed Ahmad Mirzaee 27-Aug-12 11:34am

Error!!!
i dont Know how to resolve!!!

[no name] 27-Aug-12 11:37am

"Error" does not tell anyone anything other than you got an error. Out of the thousands of errors that it could be should we guess?

Santhosh Kumar Jayaraman 28-Aug-12 0:55am

What was the error?

Kuthuparakkal · Answer 3 · 2012-08-27T05:30:00

Solution 2

try:

C#

List<object> d = new List<object>();
var q = (from t1 in Bank.Users join t2 in Bank.Questions on t1.Id equals t2.Id_Users select new { t1.Id, t1.Name });

d= q.SelectMany(x =>x).ToList();

Posted 27-Aug-12 5:30am

Kuthuparakkal

Updated 27-Aug-12 16:10pm

v4