How to get IntermediateOutputPath from Visual Studio extension and new csproj format

Question

I have a new-style csproj project file that overrides IntermediateOutputPath. It looks like this:

<PropertyGroup>
    <TargetFramework>netstandard1.6</TargetFramework>
    <IntermediateOutputPath>new\path\to\obj</IntermediateOutputPath>
</PropertyGroup>

The problem is, my Visual Studio extension can't access IntermediateOutputPath property. Project.Properties seems to have much less stuff compared to old project format.

I've also tried project.ConfigurationManager.ActiveConfiguration.Properties with the similar success.

Is there any way to get this information from Visual Studio extension?

Answer 1

So I created a simple extension to print all the properties

    private string GetPropertiesString(Properties properties)
    {
        StringBuilder test = new StringBuilder();
        foreach (Property property in properties)
        {
            try
            {
                test.AppendLine(property.Name + ":=" + property.Value.ToString());
                Console.WriteLine(property.Name + ":=" + property.Value.ToString());
            }
            catch (Exception ex)
            {
                var x = ex.Message;
            }
        }

        return test.ToString();
    }

    private void MenuItemCallback(object sender, EventArgs e)
    {
        DTE2 dte2 = Package.GetGlobalService(typeof(DTE)) as DTE2;
        var sol = dte2.Solution;
        var projs = sol.Projects;
        foreach (var proj in sol)
        {
            var project = proj as Project;
            var rows = project.ConfigurationManager.ConfigurationRowNames as IEnumerable<object>;
            foreach (var row in rows)
            {
                var config = project.ConfigurationManager.ConfigurationRow(row.ToString()).Item(1) as Configuration;
                string configs = GetPropertiesString(config.Properties);
            }
        }
    }

And this gave below output

LanguageVersion:=
RunCodeAnalysis:=False
NoStdLib:=False
ErrorReport:=prompt
CodeAnalysisUseTypeNameInSuppression:=True
CodeAnalysisInputAssembly:=bin\Debug\WindowsFormsApp1.exe
CodeAnalysisDictionaries:=
GenerateSerializationAssemblies:=2
CodeAnalysisModuleSuppressionsFile:=GlobalSuppressions.cs
StartWorkingDirectory:=
Optimize:=False
DocumentationFile:=
StartPage:=
OutputPath:=bin\Debug\
TreatWarningsAsErrors:=False
EnableASPDebugging:=False
IncrementalBuild:=True
CodeAnalysisFailOnMissingRules:=False
CodeAnalysisLogFile:=bin\Debug\WindowsFormsApp1.exe.CodeAnalysisLog.xml
DefineConstants:=DEBUG;TRACE
UseVSHostingProcess:=True
StartProgram:=
DefineDebug:=False
CodeAnalysisIgnoreBuiltInRules:=True
CodeAnalysisRuleSetDirectories:=;F:\VS2017\Team Tools\Static Analysis Tools\\Rule Sets
CodeAnalysisCulture:=
CodeAnalysisOverrideRuleVisibilities:=False
CodeAnalysisRuleAssemblies:=
DefineTrace:=False
DebugSymbols:=True
CodeAnalysisIgnoreBuiltInRuleSets:=True
CodeAnalysisRuleSet:=MinimumRecommendedRules.ruleset
NoWarn:=
CodeAnalysisIgnoreGeneratedCode:=True
EnableSQLServerDebugging:=False
BaseAddress:=4194304
RemoteDebugEnabled:=False
StartURL:=
AllowUnsafeBlocks:=False
TreatSpecificWarningsAsErrors:=
PlatformTarget:=AnyCPU
EnableUnmanagedDebugging:=False
StartWithIE:=False
StartArguments:=
IntermediatePath:=new\path\to\obj2\
CodeAnalysisRuleDirectories:=;F:\VS2017\Team Tools\Static Analysis Tools\FxCop\\Rules
DebugInfo:=full
CheckForOverflowUnderflow:=False
RemoteDebugMachine:=
Prefer32Bit:=True
CodeAnalysisSpellCheckLanguages:=
CodeAnalysisRules:=
RegisterForComInterop:=False
FileAlignment:=512
StartAction:=0
EnableASPXDebugging:=False
ConfigurationOverrideFile:=
WarningLevel:=4
RemoveIntegerChecks:=False

In the CS project I had added

<IntermediateOutputPath>new\path\to\obj2</IntermediateOutputPath>

As you can see IntermediateOutputPath is coming up as IntermediatePath. So you can use

var config = project.ConfigurationManager.ConfigurationRow("Debug").Item(1) as Configuration;
config.Properties.Item("IntermediatePath").Value

Edit-1 - .NET standard project

Edit-2 - 12-Aug-2017

So after digging more into the issue I found out the property is a MSBuild property as such and not a CSProject related property. That is why you don't see it in the Properties attribute. This requires a bit different direction to get the value using IVsBuildPropertyStorage.GetPropertyValue

    private IVsBuildPropertyStorage GetBuildPropertyStorage(EnvDTE.Project project)
    {
        IVsSolution solution = (IVsSolution)ServiceProvider.GetService(typeof(SVsSolution));

        IVsHierarchy hierarchy;
        int hr = solution.GetProjectOfUniqueName(project.FullName, out hierarchy);
        System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(hr);

        return hierarchy as IVsBuildPropertyStorage;
    }

    private string GetBuildProperty(string key, IVsBuildPropertyStorage Storage)
    {
        string value;
        int hr = Storage.GetPropertyValue(key, null, (uint)_PersistStorageType.PST_USER_FILE, out value);
        int E_XML_ATTRIBUTE_NOT_FOUND = unchecked((int)0x8004C738);

        // ignore this HR, it means that there's no value for this key
        if (hr != E_XML_ATTRIBUTE_NOT_FOUND)
        {
            System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(hr);

        }

        return value;
    }

And then later use these methods to get the value

var project = proj as EnvDTE.Project;
IVsBuildPropertyStorage storage = GetBuildPropertyStorage(project);
string outputPath = GetBuildProperty("IntermediateOutputPath", storage);

And this gives me the correct value of the property