protected void txt_expence_TextChanged(object sender, EventArgs e)
{
bl.e_name = txt_expence.Text;
DataSet ds = new DataSet();
ds = dl.secectexpencname(bl);
if (ds.Tables[0].Rows.Count > 0)
{
ScriptManager.RegisterStartupScript(this, this.GetType(), "redirect", "alert('The Expence Name Already Exists'); window.location='addexpence.aspx';", true);
}
}