Gets or sets the Content-length HTTP header.
Assembly: PresentationCore (in PresentationCore.dll)
Note that the pack URI protocol does not process information in the request other than the uniform resource identifier (URI). For most traditional purposes (such as estimating the size of POST information), there is no need for this property.
returns 0 if the request resolves from the PackageStore cache.
Windows 7, Windows Vista SP1 or later, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later)