public void Load_ApprovalType()
{
BLL_Infra_Approval_Type objBLLAppType = new BLL_Infra_Approval_Type();
DataTable dt = objBLLAppType.Get_Approval_Type(null);
ddlType.DataSource = dt;
ddlType.DataTextField = "TYPE_VALUE";
ddlType.DataValueField = "TYPE_KEY";
ddlType.DataBind();
ddlType.Items.Insert(0, new ListItem("-Select-", "0"));
}