Thursday, November 10, 2011

Using RenderControl method to generate Html

This article demonstrates how to generate perfect HTML using the RenderControl method of server controls. The Html code is generated without makeing any server-side state or view state.
/// <summary>
/// This method demonstrates how to show Html output of a Server Control
/// </summary>
private void ShowHtml()
  // Create the in-memory objects that will catch the rendered output.
  StringWriter writer = new StringWriter();
  HtmlTextWriter output = new HtmlTextWriter(writer);

  // Render the control to an in-memory string.
  var control = new HyperLink();
  control.NavigateUrl =
  control.Text =
"Asghar Panahy";
  control.Target =
  control.ToolTip =


  // Display the HTML (and encode it properly so that
  // it appears as text in the browser).
  lblHtml.Text = "The HTML for LinkWebControl1 is<br /><blockquote>"
               + Server.HtmlEncode(writer.ToString()) +

The output of this codewill be reading what you would ecpect in the Html code behind.
Notice that skipping the Server.HtmlEncode call will put the generated html as a link into the page.