Error updating the employee details!", help

[Smurfas]

What's wrong?
Compiletor don't show anything, but whet I start program show this error:
"Error updating the employee details!"

   protected void Button1_Click(object sender, EventArgs e)
    {
        //416 puslapis
        // Declare objects
        SqlConnection conn;
        SqlCommand comm;
        // Read the connection string from Web.config
        string connectionString =
        ConfigurationManager.ConnectionStrings[
        "Dorknozzle"].ConnectionString;
        // Initialize connection
        conn = new SqlConnection(connectionString);
        // Create command
        comm = new SqlCommand(
        "UPDATE Employees SET Name=@Name,  City=@City " +
        "MobilePhone=@MobilePhone " +
        "WHERE EmployeeID=@EmployeeID", conn);
        // Add command parameters
        comm.Parameters.Add("@Name",
        System.Data.SqlDbType.NVarChar, 50);
        comm.Parameters["@Name"].Value = TextBox1.Text;
 
        comm.Parameters.Add("@City",
        System.Data.SqlDbType.NVarChar, 50);
        comm.Parameters["@City"].Value = TextBox2.Text;
 
        comm.Parameters.Add("@EmployeeID", System.Data.SqlDbType.Int);
        comm.Parameters["@EmployeeID"].Value = TextBox3.Text;
        // Enclose database code in Try-Catch-Finally
        try
        {
            // Open the connection
            conn.Open();
            // Execute the command
            comm.ExecuteNonQuery();
        }
        catch
        {
            // Display error message
            Label1.Text =
            "Error updating the employee details!<br />";
        }
        finally
        {
            // Close the connection
            conn.Close();
        }
        // Refresh the employees list
        //LoadEmployeesList();
    }
 

[ck9663]

Try to get your query by displaying it or showing it in a prompt or messagebox and paste it on your query analyzer and see the actual error.

-- CK

[Delerna]

You have two statements in your try and if either one fails you get the same error message. I just hope you are not assuming its the update query that is at fault because that is what the error message says.
In fact the problem could also be caused by the

conn.Open();

I suggest moving it outside the try/catch, just to eliminate it as the cause.
Or even into its own try/catch.
Once you have proven its not opening the connection that is causing the error then you need to bug find the update query.

        conn.Open();
        try
        {
            // Open the connection
 
            // Execute the command
            comm.ExecuteNonQuery();
        }
        catch
        {
            // Display error message
            Label1.Text =
            "Error updating the employee details!<br />";
        }
        finally
        {
            // Close the connection
            conn.Close();
        }
 

It's always a process of isolate and eliminate when debugging errors.
Break it up into smaller or simpler bits and test. If it works add the next bit