Question

I tried to load top3 record of table into DataGrid it shows error Cannot implicitly convert type ‘System.Linq.IQueryable’ to ‘string’.The code below what i wrote

MyDatatBaseDataContext Mydb = new MyDatatBaseDataContext();    
var top3 = (from t in Mydb.GetTable<student>() select t).Take(2);
grd_8.ItemStringFormat = top3;

Answer 1

Change var top3 = (from t in Mydb.GetTable<student>() select t).Take(2);

to

List<student> top3 = (from t in Mydb.GetTable<student>() select t).Take(2).ToList();

and if grd_8.ItemStringFormat is a string then you have to convert yr List to a string using StringBuilder

but You can assign the List<student> top3 to Your grid ItemsSource/DataSource