GridView加入自动求和求平均值小计

private double sum = 0;//取指定列的数据和，你要根据具体情况对待可能你要处理的是int

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)    

{                

       if (e.Row.RowIndex >= 0)        

       {           

                sum += Convert.ToDouble(e.Row.Cells[6].Text);  

       }        

       else if (e.Row.RowType == DataControlRowType.Footer)        

      {            

               e.Row.Cells[5].Text = "总薪水为：";            

               e.Row.Cells[6].Text = sum.ToString();           

               e.Row.Cells[3].Text = "平均薪水为：";          

              e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();              

       }   

  }