C# 将WebUserControl添加到asp.net中的Gridview

我想向gridview控件添加一个WebUserControl，它包含一个文本框和一个标签。我将gridview与datatable动态绑定

这是我的密码：

@ Register Src="CompareBox.ascx" TagName="CompareBox" TagPrefix="objCompareBox" %><br>
<asp:GridView ID="grdfoneBoxContainer" runat="server">
         <Columns><br>
              <asp:TemplateField HeaderText="User control"> <br>
                  <ItemTemplate><br>
                      <objCompareBox:CompareBox ID="CompareBoxCol1" runat="server"/><br>
                  </ItemTemplate><br>
              </asp:TemplateField><br>
         </Columns><br>
</asp:GridView><br>

    DataTable dt = new DataTable();
    dt.Columns.Add("uc1");
    dt.Columns.Add("uc2");
    dt.Columns.Add("uc3");
    dt.Columns.Add("uc4");

    CompareBox objCompareBox = new CompareBox();
    objCompareBox.txt= "World";
    objCompareBox.lbl = "Hello";

    dt.Rows.Add(objCompareBox, objCompareBox, objCompareBox, objCompareBox);
    dt.Rows.Add(objCompareBox, objCompareBox, objCompareBox, objCompareBox);
    dt.Rows.Add(objCompareBox, objCompareBox, objCompareBox, objCompareBox);
    dt.Rows.Add(objCompareBox, objCompareBox, objCompareBox, objCompareBox);


    grdfoneBoxContainer.DataSource = dt;
    grdfoneBoxContainer.DataBind();

@Register Src=“CompareBox.ascx”TagName=“CompareBox”TagPrefix=“objCompareBox”%>

















DataTable dt=新的DataTable（）；
dt.列添加（“uc1”）；
dt.列添加（“uc2”）；
dt.列添加（“uc3”）；
dt.列添加（“uc4”）；
CompareBox objCompareBox=新的CompareBox（）；
objCompareBox.txt=“世界”；
objCompareBox.lbl=“你好”；
添加（objCompareBox，objCompareBox，objCompareBox，objCompareBox）；
添加（objCompareBox，objCompareBox，objCompareBox，objCompareBox）；
添加（objCompareBox，objCompareBox，objCompareBox，objCompareBox）；
添加（objCompareBox，objCompareBox，objCompareBox，objCompareBox）；
grdfoneBoxContainer.DataSource=dt；
grdfoneBoxContainer.DataBind（）；

txt和lbl是WebUserControl中声明的两个属性，但它给出了对象引用错误

---

谢谢，

您必须在RowDataBound事件中拦截该对象

调用grdfoneBoxContainer.DataBind（）之后；如果为RowDataBound事件编写和处理程序：

受保护的void grdfoneBoxContainer_RowDataBound（对象发送方，GridViewRowEventArgs e） { if（e.Row.RowType==DataControlRowType.DataRow） { CompareBox CompareBox=（CompareBox）e.Row.FindControl（“CompareBoxCol1”）

        //here you have a reference to your control
    }
}