dataGridView 列的计算

Question

dataGridView.Datasource =datatablesum =0;
for(i=0;i<datatable.Rows.Count;i++)
{
  sum =sum+datatable.Rows[i][0]//计算的是第一列的数据
}

Answer 1

  protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        try
        {
            if (e.Row.RowIndex >= 0)
            {
                sum += Convert.ToDouble(e.Row.Cells[4].Text);
            }
            else if (e.Row.RowType == DataControlRowType.Footer)
            {
                e.Row.Cells[3].Text = "估算金额合计：";
                e.Row.Cells[4].Text = sum.ToString();            }
        }
        catch
        {
            ;
        }将计算 结果放到尾部