Assembly: Microsoft.Office.InfoPath (in microsoft.office.infopath.dll)
The Environment class provides the IsBrowser and IsMobile properties which enable you to determine what editing environment was used to open a form template. If both properties return false, the form template was opened in Microsoft Office InfoPath 2007. If either property returns true, the form template was opened from Microsoft Office Forms Server 2007 or from an appropriately configured document library on Microsoft Office SharePoint Server 2007 running InfoPath Forms Services in the program for the corresponding property: a Web browser (IsBrowser property) or a mobile browser (IsMobile property).
In the following example, a basic pattern is shown for checking the values of IsBrowser and IsMobile properties to conditionally run code depending on which environment and program was used to open the form.