how to add text after comma in asp.net using C# in C#


In datagridview record as follows

Name Mobileno Changes Message

GS xxxx C Dear GS, sep25(CL2)


I have one button when i click that button in datagridview records will be displayed. The datagridview code as follows

sql = "select message FROM Tb_Track_SCH where Fac_Code = '" + (DGV_Fac_SMS.Rows[i].Cells[0].Value.ToString().Trim()) + "' and Message = '" + (DGV_Fac_SMS.Rows[i].Cells[3].Value.ToString().Trim()) + "'";
oledr = GFun.ReadAcessSql(sql);
if (oledr.HasRows == false)
{
DGV_Fac_SMS[2, i].Value = "C";
}

I want to add Amended TT text after the , in the above datagridview.

When Changes 'C' is appear in the Datagridview i want to add Amended TT text.

I want output as follows

Name Mobileno Changes Message

GS xxxx C Dear GS,Amended TT sep25(CL2)

After comma in the datagridview how can i add the above Amended TT.


how can i do in asp.net using C#.