protected void btnviewbranch_Click(object sender, EventArgs e) { if (drpbranch.SelectedIndex == 0) { lblmsg.Text = "Select Branch !!"; lblmsg.ForeColor = System.Drawing.Color.Red; GridView1.DataSource = null; GridView1.DataBind(); MultiView1.ActiveViewIndex = -1; } else { List <Book> _BookList = new List <Book>(); _BookBL = new BookBL(); _BookList = _BookBL.BL_BOOK_Select_BY_Branch(drpbranch.SelectedItem.Text); GridView1.DataSource = _BookList; GridView1.DataBind(); lblmsg0.Text = GridView1.Rows.Count.ToString() + " - Records Found."; MultiView1.ActiveViewIndex = 0; } }