如果我创建一个 UserControl 并向其中添加一些对象，我如何获取它将呈现的 HTML？
ex.
UserControl myControl = new UserControl();
myControl.Controls.Add(new TextBox());
// ...something happens
return strHTMLofControl;
我只想将新建的 UserControl 转换为 HTML 字符串。
您可以使用渲染控件Control.RenderControl(HtmlTextWriter).
Feed StringWriter to the HtmlTextWriter.
Feed StringBuilder to the StringWriter.
您生成的字符串将位于StringBuilder object.
这是此解决方案的代码示例：
string html = String.Empty;
using (TextWriter myTextWriter = new StringWriter(new StringBuilder()))
{
using (HtmlTextWriter myWriter = new HtmlTextWriter(myTextWriter))
{
myControl.RenderControl(myWriter);
html = myTextWriter.ToString();
}
}
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