دستور زیر را اجرا کن و از ستون "SahmSood" در گزارشت استفاده کن
DataTable dt = new DataTable();
dt = db.MySelect("SELECT tbl_Sabt_Sahamdar.ID, tbl_Sabt_Sahamdar.Name,tbl_Sabt_Sahamdar.FirstSarm aye,tbl_Sabt_Sahamdar.Sahm, SUM(tbl_Amalyat_Sahamdar.CostVariz) AS [پرداخت], " +
"SUM(tbl_Amalyat_Sahamdar.CostBardasht) AS [برداشت] FROM tbl_Sabt_Sahamdar INNER JOIN " +
"tbl_Amalyat_Sahamdar ON tbl_Sabt_Sahamdar.ID = tbl_Amalyat_Sahamdar.SahamdarCode ");
dt.Columns.Add("SahmSood", typeof(decimal));
for (int i = 0; i < dt.Rows.Count; i++)
{
int Saham = Convert.ToInt32(dt.Rows[i][3].ToString());
dt.Rows[i]["SahmSood"] = ((Kosoorat * Saham) / 100);
//rpt.SetParameterValue("SahamSood", SahmSood);
}
rpt.Show();