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Unable to load the custom visualizer.

See original GitHub issue

When I click on the magnifying glass icon, I get this error message from Visual Studio. Error on Visual Studio Enterprise 2017 v15.7.4 on Windows 10 Enterprise v10.0.15063

Unable to load the custom visualizer.
Additional information:
The UI-side visualizer type 
'NRules.Debugger.Visualizer.SessionVisualizer' must derive from 
'Microsoft.VisualStudio.DebuggerVisualizers.DialogDebuggerVisualizer'.

I did not make changes to any source code prior to running build.bat. After the build is completed, I copied the following files to C:\Users\xxxx\Documents\Visual Studio 2017\Visualizers Built with Visual Studio Enterprise v15.7.4 on Windows 10 Enterprise v10.0.16299.492


1. Microsoft.VisualStudio.DebuggerVisualizers.dll
2. NRules.Debugger.Visualizer.dll
3. NRules.Debugger.Visualizer.pdb
4. NRules.dll
5. NRules.Fluent.dll
6. NRules.Fluent.pdb
7. NRules.Fluent.xml
8. NRules.pdb
9. NRules.RuleModel.dll
10. NRules.RuleModel.pdb
11. NRules.RuleModel.xml
12. NRules.xml

Issue Analytics

State:
Created 5 years ago
Comments:6 (3 by maintainers)

Top GitHub Comments

1reaction

bigkencommented, Oct 11, 2018

<Reference Include="Microsoft.VisualStudio.DebuggerVisualizers"> <HintPath>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\Packages\Debugger\Visualizers\Microsoft.VisualStudio.DebuggerVisualizers.dll</HintPath> </Reference>

it’s for vs2017 Community Version, if you use other editon , please update the Microsoft.VisualStudio.DebuggerVisualizers.dll’s Path.

e.g. profession editor path is <Reference Include="Microsoft.VisualStudio.DebuggerVisualizers"> <HintPath>C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\Packages\Debugger\Visualizers\Microsoft.VisualStudio.DebuggerVisualizers.dll</HintPath> </Reference>

1reaction

snikolayevcommented, Jul 15, 2018

The nuget package that the visualizer is referencing for Microsoft.VisualStudio.DebuggerVisualizers.dll is for VS 2013. Unfortunately there is no nuget package for VS2015 or VS2017. You can slightly modify the references to make it work for 2017. First, make sure to clone the sources for the same version of NRules you are using. You can clone by tag under “releases”. Then, modify csproj files for the Visualizer and Visualizer Tests, to reference the visualizer DLL from under the Visual Studio install location.

NRules.Debugger.Visualizer.csproj:

<Project Sdk="Microsoft.NET.Sdk">

  <Import Project="..\..\..\Common.props" />

  <PropertyGroup>
    <TargetFramework>net45</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <Compile Include="..\..\..\GlobalAssemblyInfo.cs" Link="Properties\GlobalAssemblyInfo.cs" />
    <Compile Include="..\CommonAssemblyInfo.cs" Link="Properties\CommonAssemblyInfo.cs" />
  </ItemGroup>

  <ItemGroup>
    <Reference Include="Microsoft.VisualStudio.DebuggerVisualizers">
      <HintPath>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\Packages\Debugger\Visualizers\Microsoft.VisualStudio.DebuggerVisualizers.dll</HintPath>
    </Reference>
    <Reference Include="NRules">
      <HintPath>..\..\..\binaries\NRules\net45\NRules.dll</HintPath>
    </Reference>
    <Reference Include="NRules.Fluent">
      <HintPath>..\..\..\binaries\NRules\net45\NRules.Fluent.dll</HintPath>
    </Reference>
    <Reference Include="NRules.RuleModel">
      <HintPath>..\..\..\binaries\NRules\net45\NRules.RuleModel.dll</HintPath>
    </Reference>
  </ItemGroup>
  
</Project>

NRules.Debugger.Visualizer.Tests.csproj:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net45</TargetFramework>
    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
    <OutputType>Exe</OutputType>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="..\NRules.Debugger.Visualizer\NRules.Debugger.Visualizer.csproj" />
  </ItemGroup>

  <ItemGroup>
    <Reference Include="Microsoft.VisualStudio.DebuggerVisualizers">
      <HintPath>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\Packages\Debugger\Visualizers\Microsoft.VisualStudio.DebuggerVisualizers.dll</HintPath>
    </Reference>
    <Reference Include="NRules">
      <HintPath>..\..\..\binaries\NRules\net45\NRules.dll</HintPath>
    </Reference>
    <Reference Include="NRules.Fluent">
      <HintPath>..\..\..\binaries\NRules\net45\NRules.Fluent.dll</HintPath>
    </Reference>
    <Reference Include="NRules.RuleModel">
      <HintPath>..\..\..\binaries\NRules\net45\NRules.RuleModel.dll</HintPath>
    </Reference>
  </ItemGroup>

</Project>

Then run the build again, and copy the files from under <GitRoot>\NRules\binaries\NRules.Debugger.Visualizer\net45 to <Documents>\Visual Studio 2017\Visualizers

Let me know if this workaround works for you. I’ll see if I can have a more permanent solution.