How to create the sub total in data gridview in asp.net using c#

[baladeveloper]

hi..

How to create the sub total in data gridview in asp.net using c#

[narendrajarad]

.aspx page

<%#Convert.ToDateTime(Eval("tDate")).Day.ToString() + "/" +Convert.ToDateTime(Eval("tDate")).Month.ToString() + "/" + Convert.ToDateTime(Eval("tDate")).Year.ToString()%>

<%#Eval("chargeInPercentage")%>

Total :



...............
aspx.cs page
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
decimal rowTotal = Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "totalTransferAmount"));
amount = amount + rowTotal;
}
if (e.Row.RowType == DataControlRowType.Footer)
{
((Label)e.Row.FindControl("lblTotal")).Text = amount.ToString();
}
}