如何在ASP.NET中检索控件的呈现html？

如何以编程方式检索ASP.NET中为web控件呈现的html

例如：

dim controlHTML as string = myControl.GetHTML()

---

您必须实际调用它的.RenderMethod，并传入一个HtmlTextWriter，然后从中获取内容

System.Text.StringBuilder sb = new System.Text.StringBuilder();
using (System.IO.StringWriter sw = new System.IO.StringWriter(sb))
using (System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(sw))
{
    mycontrol.RenderControl(hw);
}