How to pass string variable as column name in linq

You can try like below :

var districtlist = db.table1.Select(d=>new {Ditrict=d.Ditrict}).Distinct().ToList();

UPDATE

string colName="Ditrict";
var districtlist = db.table1.Select(d=>new {d.colName}).Distinct().ToList();

For more info check this Method based Query syntax Article:

http://msdn.microsoft.com/en-us/library/bb896310.aspx[^]

UPDATE 2

You may try with Dynamic LINQ :
For more info check this :

http://weblogs.asp.net/scottgu/archive/2008/01/07/dynamic-linq-part-1-using-the-linq-dynamic-query-library.aspx[^]


I hope this will help to you.