C# 如何在c中读取项目模板字段#

我有一个下拉框内的项目模板。根据我的要求，我需要更新aspx.cs页面中下拉列表的工具提示字段

我使用以下代码：

<asp:TemplateField HeaderStyle-CssClass="grid-label-small" HeaderText="*State">
  <ItemTemplate>
    <asp:DropDownList ID="ddlDefState" Width="110px" runat="server" ToolTip="Select State">
    </asp:DropDownList>
  </ItemTemplate>
  <HeaderStyle CssClass="grid-label-small" />
</asp:TemplateField>`.

`.

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谢谢…

将GridView的RowDataBound事件用作：

void TitleGridView_RowDataBound (Object sender, GridViewRowEventArgs e)
  {

    // Get the RadioButtonList control from the row.
    RadioButtonList radio = (RadioButtonList)e.Row.FindControl("TypeList");

   // To Get DropDownList Cast as DropDownList and Find with it's Id - ddlDefState
  DropDownList list = (DropDownList )e.Row.FindControl("ddlDefState");

---

有关详细信息，请检查此属性。

您好，如果您在RowDataBound事件中绑定，则可以使用此属性找到项模板控件。将OnRowDataBound事件添加到GridView，如下所示

<asp:GridView runat="server"   OnRowDataBound="grd_RowDataBound"  ></asp:GridView>

protected void grd_RowDataBound(object sender, GridViewRowEventArgs e)
{
   if (e.Row.RowType == DataControlRowType.DataRow)
   {
     DropDownList dropDown;

     dropDown= e.Row.FindControl("ddlDefState") as DropDownList;

      if (dropDown!= null)
        // Write your code here            
    }
}

受保护的void grd_RowDataBound（对象发送方，GridViewRowEventArgs e）
{
如果（e.Row.RowType==DataControlRowType.DataRow）
{
下拉列表；
dropDown=e.Row.FindControl（“ddlDefState”）作为DropDownList；
如果（下拉菜单！=null）
//在这里编写代码
}
}

或者，您也可以通过这种方式从asp:GridView标记绑定到工具提示

<asp:TemplateField HeaderStyle-CssClass="grid-label-small" HeaderText="*State">
  <ItemTemplate>
  <asp:DropDownList ID="ddlDefState" Width="110px" runat="server" 
    ToolTip="<%# Bind("Your Property Name") %>">
</asp:DropDownList>
</ItemTemplate>
  <HeaderStyle CssClass="grid-label-small" />
</asp:TemplateField>

---

希望这有帮助。感谢您为GridView处理事件，如：

<asp:GridView runat="server" id="gvData" OnRowDataBound="gvData_RowDataBound">
  <HeaderStyle CssClass="grid-label-small" />
  <Columns>
  <asp:TemplateField HeaderStyle-CssClass="grid-label-small" HeaderText="*State">
   <ItemTemplate>
     <asp:DropDownList ID="ddlDefState" Width="110px" runat="server" 
       ToolTip="Select State">
     </asp:DropDownList>
  </ItemTemplate>
 </asp:TemplateField>
  </Columns>
</asp:GridView>

---

我可以知道在哪里调用函数grd_RowDataBound（对象发送器，GridViewRowEventArgs e）吗？有没有办法在不使用grid view的情况下更改工具提示文本？

protected void gvData_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        DropDownList ddlDefState;
        ddlDefState = (DropDownList)e.Row.FindControl("ddlDefState");
        if (ddlDefState != null)
        {
            ddlDefState.ToolTip = "Your New Tooltips";
            // Write your other code here            
        }
    }
}