我试图从ascx控件中检索两个列表视图，以便将它们保存到PDF文件中：
<TagCloud:TagCloudControl ID="TagCloudControl1" runat="server" />
我得到以下错误：TagCloudControl1是一个字段，但它像类型一样使用，并且非静态字段、方法或属性需要对象引用。。。谢谢你的帮助！
ListView lv1 = (TagCloudControl1)ListView.FindControl("ListView1");
ListView lv2 = (TagCloudControl1)ListView.FindControl("ListView2");
lv1.RenderControl(htWriter);
lv2.RenderControl(htWriter);
我从未见过或使用过静态FindControl（）方法。
Searches the current naming container for a server control with the specified id parameter.
显然，如果您试图定位的列表视图不在Template中，那么您应该能够在代码隐藏中直接访问它们。但如果它在一个模板中，比如GridView的行，那么你可以这样访问它。
ListView listView1 = (ListView) GridView1.Rows[0].FindControl("ListView1");
您的代码应更改为：
var lv1 = (TagCloudControl)ListView.FindControl("ListView1");
var lv2 = (TagCloudControl)ListView.FindControl("ListView2");
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