在C＃中以编程方式在gridview的底部添加一行？

Question

I would like to add a row at the end of my gridview which has 5 columns as of now. The end row will represent the total of the values of each column. How can i do that ? This is what I tried so far..My row will have the values nominatedquantity, allocatedquantity,volumne,provisionalusd,provisionalkes

using (SqlDataAdapter sda = new SqlDataAdapter())
{
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.AddWithValue("@Country", "KENYATEST");

    cmd.Connection = con;
    sda.SelectCommand = cmd;
    using (dt = new DataTable())
    {
      sda.Fill(dt);

      foreach (DataRow dr in dt.Rows)
      {
          allocatedsum += Convert.ToInt32(dr["AllocatedQuantity"]);
          nominatedsum += Convert.ToInt32(dr["NominatedQuantity"]);
          volume += Convert.ToDouble(dr["Volume"]);
          ProvisionalUSD += Convert.ToInt32(dr["ProvisionalUSD"]);
          ProvisionalKES += Convert.ToInt32(dr["ProvisionalKES"]);
      }                       

      GridView1.DataSource = dt;    
      GridView1.DataBind();
    }                                  
}

Answer 1

You are almost there. All you need to do is create a new row with the total values and add it to the data table, before you populate the gridview with it.

using (SqlDataAdapter sda = new SqlDataAdapter())
        {
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@Country", "KENYATEST");

            cmd.Connection = con;
            sda.SelectCommand = cmd;
            using (dt = new DataTable())
            {

                sda.Fill(dt);

                foreach (DataRow dr in dt.Rows)
                {
                   allocatedsum += Convert.ToInt32(dr["AllocatedQuantity"]);
                   nominatedsum += Convert.ToInt32(dr["NominatedQuantity"]);
                   volume += Convert.ToDouble(dr["Volume"]);
                  ProvisionalUSD += Convert.ToInt32(dr["ProvisionalUSD"]);
                   ProvisionalKES += Convert.ToInt32(dr["ProvisionalKES"]);

                }
                //Create a row for totals over here
                DataRow totalRow = dt.NewRow();
                //Then set the total values inside this row
                totalRow["ColumnName"] = "Column Total"; //for each column
                dt.Rows.Add(totalRow); //finally add the new row to your dource datatable

                GridView1.DataSource = dt;

                GridView1.DataBind();
            }
} }

Answer 2

Just add this before you assign dt to your datasource...

 DataRow totalRow = dt.NewRow();
                totalRow["ColumnName"] = "Column Total"; 
                dt.Rows.Add(totalRow);