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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.

VCCLCompilerTool.AdditionalUsingDirectories Property 

Gets or sets a directory to search to resolve file references passed to the #using directive. AdditionalUsingDirectories exposes the functionality of the compiler's /AI option.

Namespace: Microsoft.VisualStudio.VCProjectEngine
Assembly: Microsoft.VisualStudio.VCProjectEngine (in microsoft.visualstudio.vcprojectengine.dll)

Property AdditionalUsingDirectories As String
Dim instance As VCCLCompilerTool
Dim value As String

value = instance.AdditionalUsingDirectories

instance.AdditionalUsingDirectories = value
/** @property */
String get_AdditionalUsingDirectories ()

/** @property */
void set_AdditionalUsingDirectories (/** @attribute InAttribute() */ String IncludePath)

function get AdditionalUsingDirectories () : String

function set AdditionalUsingDirectories (IncludePath : String)

Property Value

A directory to search to resolve file references passed to the #using directive.

See Examples for Project Model Extensibility for information on how to compile and run this example.

The following example modifies the AdditionalUsingDirectories property in the integrated development environment (IDE):

' add reference to Microsoft.VisualStudio.VCProjectEngine.
Imports EnvDTE
Imports Microsoft.VisualStudio.VCProjectEngine

Public Module Module1
    Sub Test()
        Dim prj As VCProject
        Dim cfgs, tools As IVCCollection
        Dim cfg As VCConfiguration
        Dim tool As VCCLCompilerTool
        prj = DTE.Solution.Projects.Item(1).Object
        cfgs = prj.Configurations
        cfg = cfgs.Item(1)
        tool = cfg.Tools("VCCLCompilerTool")
        tool.AdditionalUsingDirectories = "\MyPath"
    End Sub
End Module
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