Returns a string value containing the unicode version of textual content that was downloaded from the server or read from the browser cache.
For access to non-textual content or if you require the original text before conversion to Unicode use the Data property instead.
The string value returned is in unicode format and is automatically converted from the text encoding originally used, e.g. UTF8, Chinese, etc
An empty string is returned if the content is not textual, e.g. image, binary,etc.