The Context property contains installation information. For example, information about the location of the log file for the installation, the location of the file to save information required by the Uninstall method, and the command line that was entered when the installation executable was run.

The program that calls the Install, Commit, Rollback, or Uninstall methods sets the Context property with information that the methods need.

If an installer belongs to an installer collection, the parent installer sets the Context property before calling any of these methods. The parent installer can be accessed through the Parent property.

The following example demonstrates the Context property of the Installer class. The contents of the Context property contain information about the location of the log file for the installation, the location of the file to save information required by the Uninstall method, and the command line that was entered when the installation executable was run. These contents are then displayed on the console.

Dim myStringDictionary As StringDictionary = Context.Parameters
If Context.Parameters.Count > 0 Then
   Console.WriteLine("Context Property : ")
   Dim myString As String
   For Each myString In  Context.Parameters.Keys
      Console.WriteLine(Context.Parameters(myString))
   Next myString
End If

StringDictionary myStringDictionary = Context.Parameters;
if ( Context.Parameters.Count > 0 )
{
   Console.WriteLine("Context Property : " );
   foreach( string myString in Context.Parameters.Keys)
   {
      Console.WriteLine( Context.Parameters[ myString ] );
   

StringDictionary^ myStringDictionary = Context->Parameters;
if ( Context->Parameters->Count > 0 )
{
   Console::WriteLine( "Context Property : " );
   IEnumerator^ myEnum = Context->Parameters->Keys->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      String^ myString = safe_cast<String^>(myEnum->Current);
      Console::WriteLine( Context->Parameters[ myString ] );
   

StringDictionary myStringDictionary = get_Context().get_Parameters();
if (get_Context().get_Parameters().get_Count() > 0) {
    Console.WriteLine("Context Property : ");
    IEnumerator myEnum = get_Context().get_Parameters().
        get_Keys().GetEnumerator();
    while (myEnum.MoveNext()) {
        String myString = (String)myEnum.get_Current();
        Console.WriteLine(get_Context().get_Parameters().
            get_Item(myString));
    

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see .

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework