gridview中guid无法读取

Question

使用gridview将oracle中的数据读取出来 其中有两列隐藏域为guid数据类型想在想提取guid数据在后台使用 获取的值为system.byte[] 不为guid 前台代码<asp:HiddenField ID="HiddenOpGuid" runat="server" Visible="false" Value='<%# Eval("TRANSACTIONID").ToString() %>'></asp:HiddenField> 后台代码        protected void grvMonitor_RowDataBound(object sender, GridViewRowEventArgs e)        {               e.Row.Cells[0].Visible = true;                HiddenField hidefield = (HiddenField)e.Row.Cells[0].FindControl("HiddenOpGuid");               e.Row.Cells[0].Visible = false;              this.textbox.text=hidefield.value;      }该如何解决

Answer 1

<asp:TemplateField HeaderText="...">
<ItemTemplate>
<asp:Label ID="LabValue" runat="server" Text='<%# Eval("TRANSACTIONID").ToString() %>' Visible="False"></asp:Label>
</ItemTemplate>
</asp:TemplateField>

//放一个隐藏的Label然后找到它，直接取它的Text不行吗？
    protected void grvMonitor_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            Label LabValue= (Label)e.Row.FindControl("LabValue");
            //LabValue.Text =？？
        }
    }

Answer 2

打断点  跟一下看看什么结果！再判断......