protected void PopulateFieldsForSelectedUser() { DataTable dt = ds.Tables[0]; if ( (dt.Rows.Count > 0) && (ListBoxUsers.SelectedIndex > -1) ) { DataRow dr = dt.Rows[ListBoxUsers.SelectedIndex]; TextBoxFirstName.Text = (string) dr["FirstName"]; TextBoxLastName.Text = (string) dr["LastName"]; TextBoxUserName.Text = (string) dr["UserName"]; TextBoxPassword.Text = (string) dr["Pwd"]; TextBoxEmail.Text = (string) dr["Email"]; } }