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AddIn.Installed Property 

True if the add-in is installed.

Namespace: Microsoft.Office.Interop.Excel
Assembly: Microsoft.Office.Interop.Excel (in

Dim addIn1 As AddIn

Dim returnValue As Boolean
returnValue = addIn1.Installed

Dim sampleValue As Boolean
addIn1.Installed = sampleValue

bool Installed {get; set;}
public boolean get_Installed();
public void set_Installed(boolean);
function get Installed() : Boolean;
function set Installed(Boolean);

Setting this property to True installs the add-in and calls its Auto_Add functions. Setting this property to False removes the add-in and calls its Auto_Remove functions.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

Windows XP Home Edition, Windows XP Professional, Windows Server 2003, and Windows 2000

Target Platforms