gridview怎么记录新旧值

Question

在datagrid中按了edit的按钮之后，修改某个单元格的数据，那么怎么记录单元格的久值和新值？

  protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            string newName = e.NewValues.Values.ToString();
            string oldName = e.OldValues.Values.ToString();

            Response.Write(string.Format ("<script language=javascript>alert('old {0}  new {1}')</script>",
                oldName ,newName));
          }

上面的e.newValues   和  e.oldValues 好像没用啊！
那要怎么记录新旧值？

Answer 1

要记录新旧数值，必须：

1）使用自动生成的字段（启用GridView的AllowEdit=True），或者使用DataBoundField，要不就是<%Bind("字段")%>放于自定义的TemplateField模板内。

2）同时NewValues和OldValues是IDictionary集合。你应该通过索引器获取：

string newName = e.NewValues.Values["字段名"].ToString();
string oldName = e.OldValues.Values["字段名"].ToString();

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Answer 2

您的方法好像不行啊？？能不能再详细一点，才刚刚学asp.net，麻烦了

Answer 3

您的方法好像不行啊？？能不能再详细一点，才刚刚学asp.net，麻烦了

你全部的代码，谢谢！（aspx和cs）。

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