protected void Submit_Click(object sender, EventArgs e) { try { if (Page.IsValid) { int Bookid = objDb.BookCrud(txtAuthorName.Text, txtBookName.Text, txtpublisherName.Text, Convert.ToInt32(ddlcat.SelectedValue.ToString() == string.Empty ? 0 : Convert.ToInt32(ddlcat.SelectedValue.ToString())), ddlcat.SelectedItem.ToString(), 1, 0, hdnimg.Value); if (Bookid > 0) { txtBookId.Text = Bookid.ToString(); ScriptManager.RegisterStartupScript(this, GetType(), "alertMessage", "alertMessage('New Book Inserted Successfully');", true); BindBookDetails(); } } } catch (Exception) { throw; } }