Question

I have a question. I’ve tried to solve it all day long and I am really stuck. I’m using VS2010 and SQL Server 2012 (quite a bad combination) and I’m trying to execute a fairly simple piece of C# and ASP.net code which goes like this:

string conn = ConfigurationManager.ConnectionStrings["BazaConnectionString"].ConnectionString;

SqlConnection connect = new SqlConnection(conn);

SqlDataAdapter sqlAdapter = new SqlDataAdapter();
SqlCommand cmd = new SqlCommand("SELECT * FROM  Seminar", connect);
sqlAdapter.SelectCommand = cmd;

DataTable tablica = new DataTable();
sqlAdapter.Fill(tablica);

GridView1.DataSource = tablica;
GridView1.DataBind();

The problem is my gridview is always empty. I have data in the table and SELECT * should select all of it but I get an empty table returned. I’ve been trying Dataset and DataTable but nothing seems to work. Any help is appreciated. Thanks in advance.

Answer 1

I have a hunch that you might be running into an exception – possibly a timeout – and you’re not dealing with this properly…

Try something like this:

string conn = ConfigurationManager.ConnectionStrings["BazaConnectionString"].ConnectionString;

using (SqlConnection connect = new SqlConnection(conn))
using (SqlCommand cmd = new SqlCommand("SELECT * FROM  Seminar", connect))
using (SqlDataAdapter sqlAdapter = new SqlDataAdapter(cmd))
{
   try
   {
      DataTable tablica = new DataTable();
      sqlAdapter.Fill(tablica);

      GridView1.DataSource = tablica;
      GridView1.DataBind();
   }
   catch(Exception exc)
   {
       string msg = exc.GetType().FullName + ": " + exc.Message;
   }
}

If you execute this code – do you happen to fall into the catch block? If so: what’s the exception? What does it tell you?