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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

AddIns Interface

Contains all add-ins listed in the Add-In Manager dialog box if they are DTE.AddIns, or all of the add-ins loaded by a particular solution if they are ProjectSolution.AddIns.

Namespace: EnvDTE
Assembly: EnvDTE (in envdte.dll)

[GuidAttribute("50590801-D13E-4404-80C2-5CA30A4D0EE8")] 
public interface AddIns : IEnumerable
/** @attribute GuidAttribute("50590801-D13E-4404-80C2-5CA30A4D0EE8") */ 
public interface AddIns extends IEnumerable
GuidAttribute("50590801-D13E-4404-80C2-5CA30A4D0EE8") 
public interface AddIns extends IEnumerable

An AddIn object provides information about an add-in to other add-ins. Only registered add-ins can be represented by an AddIn object.

The IDTExtensibility2 interface contains the OnAddInsUpdate method that occurs when the AddIns collection is updated, unless the add-in is a solution add-in.

Sub AddInsExample()
   ' For this example to work correctly, there should be an add-in 
   ' available in the Visual Studio environment.
   ' Set object references.
   Dim addincoll As AddIns
   Dim addinobj As AddIn
   
   ' Register an add-in, check DTE add-in count before and after the 
   ' update.
   addincoll = DTE.AddIns
   MsgBox("AddIns collection parent name: " & addincoll.Parent.Name)
   MsgBox("Number of Add-ins: " & addincoll.Count)
   ' NOTE: Use regsvr32 for Visual C++, regasm for Visual Basic 
   ' and Visual C#. Also, the pathname used below is an example only.
   Shell("regasm F:\AddIns\RegExplore\Debug\regexplore.dll")
   addincoll.Update()
   MsgBox("Number of Add-ins: " & addincoll.Count)
   addinobj = addincoll.Item(1)
End Sub 

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