如何在c#中读取项模板字段

本文关键字：字段 读取 | 更新日期: 2023-09-27 18:16:40

在项目模板中有一个下拉框。根据我的要求，我需要更新下拉在aspx.cs页面的工具提示字段。

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>`.

谢谢…

如何在c#中读取项模板字段

嗨，你可以使用这个找到Item模板控件，假设你绑定在RowDataBound事件中。像这样给GridView添加OnRowDataBound事件，

<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            
    }
}

可选的，你也可以通过这种方式绑定到asp:GridView标记的工具提示，

<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>

希望这对你有帮助。由于

使用GridView的rowdataboundevent:

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");

检查这个TemplateField。

处理GridView的事件RowDataBound:

<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>

现在，在事件gvData_RowDataBound中找到dropdown并将tooltip更改为:

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            
        }
    }
}
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