Obtains the HtmlTextWriterTag enumeration value associated with the specified markup element.
Assembly: System.Web (in System.Web.dll)
If tagName is null, an empty string (""), or cannot be found in the table of markup tag names, the method returns the Unknown field.
The following code example shows how to override the overload of the RenderBeginTag method that takes a string as its parameter. The string is passed to the method, which converts it to the corresponding HtmlTextWriterTag enumeration member, and then passes that to the RenderBeginTag overload that takes a HtmlTextWriterTag enumeration value as a parameter.