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adding-an-attribute-to-a-project-item.md

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title description ms.date ms.topic helpviewer_keywords author ms.author manager ms.subservice
Adding an Attribute to a Project Item
Learn how to add an attribute to a project item in Visual Studio by using the Shell Interop methods GetItemAttribute and SetItemAttribute.
11/04/2016
how-to
attributes [Visual Studio], adding to a project item
maiak
maiak
mijacobs
extensibility-integration

Add an attribute to a project item

The methods xref:Microsoft.VisualStudio.Shell.Interop.IVsBuildPropertyStorage.GetItemAttribute%2A and xref:Microsoft.VisualStudio.Shell.Interop.IVsBuildPropertyStorage.SetItemAttribute%2A get and set the value of the attributes of a project item. SetItemAttribute creates the attribute if it does not already exist, adding it to the project item metadata.

Add an attribute to a project item

  • The following code uses the xref:EnvDTE.DTE automation object and the xref:Microsoft.VisualStudio.Shell.Interop.IVsBuildPropertyStorage.SetItemAttribute%2A method to add an attribute to a project item. The project item ID is obtained from the project item name "program.cs". The attribute "MyAttribute" is added to this project item and given the value "MyValue".

    EnvDTE.DTE dte = (EnvDTE.DTE)Package.GetGlobalService(typeof(EnvDTE.DTE));
EnvDTE.Project project = dte.Solution.Projects.Item(1);

string uniqueName = project.UniqueName;
IVsSolution solution = (IVsSolution)Package.GetGlobalService(typeof(SVsSolution));
IVsHierarchy hierarchy;
solution.GetProjectOfUniqueName(uniqueName, out hierarchy);
IVsBuildPropertyStorage buildPropertyStorage = hierarchy as IVsBuildPropertyStorage;
if (buildPropertyStorage != null)
{
    uint itemId;
    string fullPath = (string)project.ProjectItems.Item("Program.cs").Properties.Item("FullPath").Value;
    hierarchy.ParseCanonicalName(fullPath, out itemId);
    buildPropertyStorage.SetItemAttribute(itemId, "MyAttribute", "MyValue");
}

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