change back color if gridView cells has empty.

protected void grdEmp_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
HiddenField hdfDueAmt = (HiddenField)e.Row.FindControl("hdfDueAmt");
HiddenField hdfPartyID = (HiddenField)e.Row.FindControl("hdfPartyID");
if (hdfDueAmt.Value !="0")
{
e.Row.BackColor = Color.FromName("#FFAAAA");// change BackGround COlor
e.Row.ForeColor = Color.FromName("#000000");// change font COlor
}
else
{
e.Row.BackColor = Color.FromName("#fff");
}
DataTable dt = DataAccess.GetData("select * from [View_PartyMaster] where [IsContact]='1' and [PartyId]='" + hdfPartyID.Value+ "' ");
if (dt != null && dt.Rows.Count > 0)
{

lblParty.Text = dt.Rows[0]["CompanyName"].ToString() + " ," + dt.Rows[0]["MemberName"].ToString() + "," + dt.Rows[0]["Phone"].ToString();

}
//if (e.Row.RowType == DataControlRowType.Header)
//{
// e.Row.BackColor = Color.FromName("#047BF8");
//}
}