Calculate sum in footer for all pages in gridview

Question

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hello, i have problem that the total for 3 col that i have will calculate every page alone when, i need to calculate the total for all pages not every page alone using gridview

as u see in code blow i have 3 col, everyone of them will have total but in when i enable paging its give me total for every page and i need total for all pages

thx...

What I have tried:

C#

int RENT = 0;
        int AMOUNTLEFT = 0;
        int AMOUNTPAID = 0;
        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
    {
         RENT += Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "RENT"));
         AMOUNTLEFT += Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, " AMOUNTLEFT"));
         AMOUNTPAID += Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, " AMOUNTPAID"));
    }
    // Display totals in the gridview footer
    else if (e.Row.RowType == DataControlRowType.Footer)
    {
        e.Row.Cells[14].Text = "Grand Total المجموع :-";
        e.Row.Cells[14].Font.Bold = true;
 
        e.Row.Cells[16].Text = AMOUNTPAID.ToString();
        e.Row.Cells[16].Font.Bold = true;
       
 
        e.Row.Cells[17].Text = RENT.ToString();
        e.Row.Cells[17].Font.Bold = true;
 
        e.Row.Cells[15].Text = AMOUNTLEFT.ToString();
        e.Row.Cells[15].Font.Bold = true;
 
           
    }
}

Posted 15-Apr-17 1:21am

Learn.net37

Updated 15-Apr-17 7:40am

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Karthik_Mahalingam · Accepted Answer · 2017-04-15T07:40:00

try like this

if (e.Row.RowType == DataControlRowType.Footer)
            {
                DataTable dt = GridView1.DataSource as DataTable;
                int RENT = 0;
                int AMOUNTLEFT = 0;
                int AMOUNTPAID = 0;
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    RENT += Convert.ToInt32(dt.Rows[i]["RentColumnName"]);
                    AMOUNTLEFT += Convert.ToInt32(dt.Rows[i]["AMOUNTLEFTColumnName"]);
                    AMOUNTPAID += Convert.ToInt32(dt.Rows[i]["AMOUNTPAIDColumnName"]);
                }

                e.Row.Cells[14].Text = "Grand Total المجموع :-";
                e.Row.Cells[14].Font.Bold = true;

                e.Row.Cells[16].Text = AMOUNTPAID.ToString();
                e.Row.Cells[16].Font.Bold = true;


                e.Row.Cells[17].Text = RENT.ToString();
                e.Row.Cells[17].Font.Bold = true;

                e.Row.Cells[15].Text = AMOUNTLEFT.ToString();
                e.Row.Cells[15].Font.Bold = true;
             }