protected void btnPriview_Click(object sender, EventArgs e)
    {
        DataTable dtHR = objTSM.Get_SOF_Wise_HR(ddlEmployee.SelectedValue.Trim(), ddlYear.SelectedValue.Trim());
        DataTable dtTS = objTSM.Get_MonthWiseTimeSheetHour(ddlEmployee.SelectedValue.Trim(), ddlYear.SelectedValue.Trim());

        grReport.DataSource = dtTS;
        grReport.DataBind();

        //Fill SOF Code wise Hour
        this.FillHour(dtHR);
    }