無商不雅

寫在RowDataBound事件中:

int mysum1 = 0; //作為全域變數
 if (e.Row.RowIndex >= 0) //if (e.Row.RowType == DataControlRowType.DataRow)
        {
            int value;
           if(!int.TryParse(e.Row.Cells[9].Text,out value))
               {value=0;}
            
            mysum1 += value ;
        }
            if 
           (e.Row.RowType == DataControlRowType.Footer)
             {
                 e.Row.Cells[9].Text = mysum1.ToString();
           
            e.Row.BackColor = System.Drawing.Color.Chocolate;//設定這個footer的字顏色與背景色
            e.Row.ForeColor = System.Drawing.Color.White;


        
            }

另一段寫法，我是在網路上看到，分享一下(VB):

  Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
        If e.Row.RowType = DataControlRowType.DataRow Then
            sum += Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "某欄位"))
        ElseIf e.Row.RowType = DataControlRowType.Footer Then
            e.Row.Cells(0).Text = "總計"
            e.Row.Cells(1).Text = sum.ToString()
            e.Row.Cells(0).HorizontalAlign = HorizontalAlign.Center
            e.Row.Cells(1).HorizontalAlign = HorizontalAlign.Center
            e.Row.Font.Bold = True
        End If
    End Sub