Gets the help text for all the installers in the installer collection.
Assembly: System.Configuration.Install (in System.Configuration.Install.dll)
Property ValueType: System.String
The help text for all the installers in the installer collection, including the description of what the installer does and the command line options for the installation executable, such as the InstallUtil.exe utility, that can be passed to and understood by this installer.
One of the installers in the installer collection specifies a null reference instead of help text. A likely cause for this exception is that a field to contain the help text is defined but not initialized.
The following example demonstrates the property. This property is defined in the Installer class, which, when called, returns the description of the Installer and the command line options for the installation executable, such as the Installutil.exe utility, that can be passed to and understood by the Installer.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
Windows Phone 8.1, Windows Phone 8, 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.