GridView DataBind() has no value in it

Question

I am creating an asp.net web application integrated with Facebook. I am trying to fetch the Friends of the logged in user in a grid view in my application.

Code:

IList<user> usrFrnds = api.Users.GetInfo(myFrndId);

Friends = usrFrnds;

// Bind to GridView to display
grvMyFriends.DataSource = Friends;
grvMyFriends.DataBind();

For example a user has two friends.

When Breakpoints hits

grvMyFriends.DataSource = Friends;

It shows count= 2

But when breakpoint comes to

grvMyFriends.DataBind();

then in immediate window it shows

Expression has been evaluated and has no value

I am not understanding where is the problem.

Any help is appreciated.

Thanks,

Isha

Answer 1

To bind grid you need a list. Friend is a object not list . That's why you get this error.

Try this :

IList<user> usrFrnds = api.Users.GetInfo(myFrndId);

// Bind to GridView to display
grvMyFriends.DataSource = usrFrnds;
grvMyFriends.DataBind();

Answer 2

Try to check if usrFrnds retrieve records.

   if(usrFrnds.Count > 0 )
   {
   //DATA FOUND!
   grvMyFriends.DataSource = usrFrnds.ToList(); 
   grvMyFriends.DataBind();
   }
   else
   {
    //NO DATA FOUND!
   }

Regards