Gets the version of the .NET Framework that is installed on the client.
Assembly: System.Web (in System.Web.dll)
The property is supported only when the browser is Internet Explorer version 5.0 and later.
If the .NET Framework is not installed on the client, the value of the version elements returned is 0, 0,-1,-1.
If more than one version of the .NET Framework is installed on the client, the property returns the latest version.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.