dotnet · michael-hawker · Feb 24, 2026 · Feb 23, 2026
diff --git a/.config/dotnet-tools.json b/.config/dotnet-tools.json
@@ -0,0 +1,12 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "xamlstyler.console": {
+      "version": "3.2501.8",
+      "commands": [
+        "xstyler"
+      ]
+    }
+  }
+}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
@@ -0,0 +1,175 @@
+
+# https://docs.github.com/actions/using-workflows/about-workflows
+# https://docs.github.com/actions/using-workflows/workflow-syntax-for-github-actions
+
+name: CI
+
+# Controls when the action will run.
+on:
+  # Triggers the workflow on push or pull request events but only for the main or release branches
+  push:
+    branches: [ main, 'dev', 'feature/*' ]
+  pull_request:
+    branches: [ main, 'dev', 'feature/*' ]
+
+  # Allows you to run this workflow manually from the Actions tab (with inputs!)
+  # https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-syntax#onworkflow_dispatchinputs
+  workflow_dispatch:
+    inputs:
+      diagnostics:
+        description: 'Enable diagnostics (binlogs, dumps, etc) for this run'
+        required: false
+        default: false
+        type: boolean
+      verbosity:
+        description: 'MSBuild verbosity (quiet, minimal, normal, detailed, diagnostic)'
+        required: true
+        default: 'normal'
+        type: choice
+        options:
+          - quiet
+          - minimal
+          - normal
+          - detailed
+          - diagnostic
+      configuration:
+        description: 'Build configuration to use'
+        required: true
+        default: 'Debug'
+        type: choice
+        options:
+          - Debug
+          - Release
+  merge_group:
+
+env:
+  DOTNET_VERSION: ${{ '9.0.x' }}
+  CONFIGURATION: ${{ github.event.inputs.configuration || 'Debug' }}
+  VERBOSITY: ${{ github.event.inputs.verbosity || 'normal' }}
+  IS_MAIN: ${{ github.ref == 'refs/heads/main' }}
+  IS_PR: ${{ startsWith(github.ref, 'refs/pull/') }}
+
+jobs:
+  # Check XAML Styling before trying to do anything else as a gate
+  Xaml-Style-Check:
+    runs-on: windows-2022
+
+    steps:
+      - name: Install .NET SDK v${{ env.DOTNET_VERSION }}
+        uses: actions/setup-dotnet@v5.1.0
+        with:
+          dotnet-version: ${{ env.DOTNET_VERSION }}
+
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - name: Checkout Repository
+        uses: actions/checkout@v6.0.2
+        with:
+          submodules: recursive
+
+      # Restore Tools from Manifest list in the Repository
+      - name: Restore dotnet tools
+        run: dotnet tool restore
+
+      - name: Check XAML Styling
+        run: powershell -version 5.1 -command "./ApplyXamlStyling.ps1 -Passive" -ErrorAction Stop
+
+  build:
+    needs: [Xaml-Style-Check]
+    runs-on: windows-2022
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # give UWP more room to breathe
+      - name: Configure Pagefile
+        uses: al-cheb/configure-pagefile-action@v1.5
+        with:
+          minimum-size: 32GB
+          maximum-size: 32GB
+          disk-root: "C:"
+
+      - name: Enable User-Mode Dumps collecting
+        if: (github.event.inputs.diagnostics || 'false') == 'true'
+        shell: powershell
+        run: |
+          New-Item '${{ github.workspace }}\CrashDumps' -Type Directory
+          Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps' -Name 'DumpFolder' -Type ExpandString -Value '${{ github.workspace }}\CrashDumps'
+          Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps' -Name 'DumpCount' -Type DWord -Value '10'
+          Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps' -Name 'DumpType' -Type DWord -Value '2'
+
+      - name: Install .NET SDK v${{ env.DOTNET_VERSION }}
+        uses: actions/setup-dotnet@v5.1.0
+        with:
+          dotnet-version: ${{ env.DOTNET_VERSION }}
+
+      - name: .NET Info (if diagnostics)
+        if: (github.event.inputs.diagnostics || 'false') == 'true'
+        run: dotnet --info
+
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - name: Checkout Repository
+        uses: actions/checkout@v6.0.2
+        with:
+          submodules: recursive
+
+      # Restore Tools from Manifest list in the Repository
+      - name: Restore dotnet tools
+        run: dotnet tool restore
+
+      - name: Add msbuild to PATH
+        uses: microsoft/setup-msbuild@v2
+        with:
+          vs-version: '[17.9,)'
+
+      # Build solution
+      - name: MSBuild
+        run: >
+          msbuild.exe /restore
+          /p:Configuration=${{ env.CONFIGURATION }}
+          /p:Platform=x64
+          /m
+          ${{ github.event.inputs.diagnostics == 'true' && '/bl' || '' }}
+          /v:${{ env.VERBOSITY }}
+          XamlStudio.slnx
+
+      # Run tests
+      - name: Setup VSTest Path
+        uses: darenm/setup-vstest@3a16d909a1f3bbc65b52f8270d475d905e7d3e44
+
+      - name: Run XAML Studio Unit Tests
+        id: test-platform
+        run:  vstest.console.exe ./XamlStudio.Toolkit.UnitTests/**/XamlStudio.Toolkit.UnitTests.build.appxrecipe /Framework:FrameworkUap10 /logger:"trx;LogFileName=XamlStudio.trx" /Blame
+
+      - name: Artifact - Diagnostic Logs
+        uses: actions/upload-artifact@v6
+        if: ${{ (github.event.inputs.diagnostics || 'false') == 'true' && always() }}
+        with:
+          name: build-logs-xaml-studio
+          path: ./**/*.*log
+
+      - name: Artifact - ILC Repro
+        uses: actions/upload-artifact@v6
+        if: ${{ (github.event.inputs.diagnostics || 'false') == 'true' && always() }}
+        with:
+          name: ilc-repro
+          path: ./*.zip
+
+      # https://github.com/dorny/paths-filter#custom-processing-of-changed-files
+      - name: Detect If any Dump Files
+        id: detect-dump
+        if: always()
+        working-directory: ${{ github.workspace }}
+        run: |
+          echo "DUMP_FILE=$(Get-ChildItem .\CrashDumps\*.dmp -ErrorAction SilentlyContinue)" >> $env:GITHUB_OUTPUT
+
+      - name: Artifact - WER crash dumps
+        uses: actions/upload-artifact@v6
+        if: ${{ (github.event.inputs.diagnostics || 'false') == 'true' && always() }}
+        with:
+          name: CrashDumps-xaml-studio
+          path: '${{ github.workspace }}/CrashDumps'
+
+      - name: Analyze Dump
+        if: ${{ steps.detect-dump.outputs.DUMP_FILE != '' && (github.event.inputs.diagnostics || 'false') == 'true' && always() }}
+        run: |
+          dotnet tool install --global dotnet-dump
+          dotnet-dump analyze ${{ steps.detect-dump.outputs.DUMP_FILE }} -c "clrstack" -c "pe -lines" -c "exit"
diff --git a/ApplyXamlStyling.ps1 b/ApplyXamlStyling.ps1
@@ -0,0 +1,128 @@
+<#
+    .SYNOPSIS 
+    Modify XAML files to adhere to XAML Styler settings.
+
+    .DESCRIPTION
+    The Apply XAML Stying Script can be used to check or modify XAML files with the repo's XAML Styler settings.
+    Learn more about XAML Styler at https://github.com/Xavalon/XamlStyler
+
+    By default, uses git status to check all new or modified files.
+
+    Use "PS> Help .\ApplyXamlStyling.ps1 -Full" for more details on parameters.
+
+    .PARAMETER LastCommit
+    Runs against last commit vs. current changes
+
+    .PARAMETER Unstaged
+    Runs against unstaged changed files
+
+    .PARAMETER Staged
+    Runs against staged files vs. current changes
+
+    .PARAMETER Main
+    Runs against main vs. current branch
+
+    .PARAMETER Passive
+    Runs a passive check against all files in the repo for the CI
+
+    .EXAMPLE
+    PS> .\ApplyXamlStyling.ps1 -Main
+#>
+param(
+    [switch]$LastCommit = $false,
+    [switch]$Unstaged = $false,
+    [switch]$Staged = $false,
+    [switch]$Main = $false,
+    [switch]$Passive = $false
+)
+
+Write-Output "Use 'Help .\ApplyXamlStyling.ps1' for more info or '-Main' to run against all files."
+Write-Output ""
+Write-Output "Restoring dotnet tools..."
+dotnet tool restore
+
+if (-not $Passive)
+{
+    # Look for unstaged changed files by default
+    $gitDiffCommand = "git status -s --porcelain"
+
+    if ($Main)
+    {
+        Write-Output 'Checking Current Branch against `main` Files Only'
+        $branch = git status | Select-String -Pattern "On branch (?<branch>.*)$"
+        if ($null -eq $branch.Matches)
+        {
+            $branch = git status | Select-String -Pattern "HEAD detached at (?<branch>.*)$"
+            if ($null -eq $branch.Matches)
+            {
+                Write-Error 'Don''t know how to fetch branch from `git status`:'
+                git status | Write-Error
+                exit 1
+            }
+        }
+        $branch = $branch.Matches.groups[1].Value
+        $gitDiffCommand = "git diff origin/main $branch --name-only --diff-filter=ACM"
+    }
+    elseif ($Unstaged)
+    {
+        # Look for unstaged files
+        Write-Output "Checking Unstaged Files"
+        $gitDiffCommand = "git diff --name-only --diff-filter=ACM"
+    }
+    elseif ($Staged)
+    {
+        # Look for staged files
+        Write-Output "Checking Staged Files Only"
+        $gitDiffCommand = "git diff --cached --name-only --diff-filter=ACM"
+    }
+    elseif ($LastCommit)
+    {
+        # Look at last commit files
+        Write-Output "Checking the Last Commit's Files Only"
+        $gitDiffCommand = "git diff HEAD^ HEAD --name-only --diff-filter=ACM"
+    }
+    else 
+    {
+        Write-Output "Checking Git Status Files Only"    
+    }
+
+    Write-Output "Running Git Diff: $gitDiffCommand"
+    $files = Invoke-Expression $gitDiffCommand | Select-String -Pattern "\.xaml$"
+
+    if (-not $Passive -and -not $Main -and -not $Unstaged -and -not $Staged -and -not $LastCommit)
+    {
+        # Remove 'status' column of 3 characters at beginning of lines
+        $files = $files | ForEach-Object { $_.ToString().Substring(3) }
+    }
+
+    if ($files.count -gt 0)
+    {
+        dotnet tool run xstyler -c .\settings.xamlstyler -f $files
+    }
+    else
+    {
+        Write-Output "No XAML Files found to style..."
+    }
+}
+else 
+{
+    Write-Output "Checking all files (passively)"
+    $files = Get-ChildItem *.xaml -Recurse | Select-Object -ExpandProperty FullName | Where-Object { $_ -notmatch "(\\obj\\)|(\\bin\\)" }
+
+    if ($files.count -gt 0)
+    {
+        dotnet tool run xstyler -p -c .\settings.xamlstyler -f $files
+
+        if ($lastExitCode -eq 1)
+        {
+            Write-Error 'XAML Styling is incorrect, please run `ApplyXamlStyling.ps1 -Main` locally.'
+        }
+
+        # Return XAML Styler Status
+        exit $lastExitCode
+    }
+    else
+    {
+        exit 0
+    }
+}
diff --git a/XamlStudio.Toolkit.UnitTests/XmlToXamlTreeTests.cs b/XamlStudio.Toolkit.UnitTests/XmlToXamlTreeTests.cs
@@ -299,7 +299,9 @@ await EnqueueAsync(async () =>
         });
     }
 
+    // TODO: https://github.com/dotnet/XAMLStudio/issues/63
     [TestMethod]
+    [Ignore]
     public async Task NamespacedControl_XmlToXamlTest()
     {
         await EnqueueAsync(async () =>
@@ -484,4 +486,4 @@ await EnqueueAsync(async () =>
             await UnloadTestContentAsync(fwe);
         });
     }
-}
+}
diff --git a/XamlStudio/Views/Document.xaml b/XamlStudio/Views/Document.xaml
@@ -60,7 +60,7 @@
                         <Setter Target="SplitterBar.(Grid.RowSpan)" Value="3" />
                         <Setter Target="SplitterBar.(Grid.ColumnSpan)" Value="1" />
                         <Setter Target="SplitterBar.ResizeDirection" Value="Columns" />
-                        <!-- Workaround for https://github.com/CommunityToolkit/Windows/issues/748 -->
+                        <!--  Workaround for https://github.com/CommunityToolkit/Windows/issues/748  -->
                         <Setter Target="SplitterBar.Orientation" Value="Vertical" />
 
                         <Setter Target="SplitterCommandBarLeft.(Grid.Row)" Value="0" />
@@ -109,7 +109,7 @@
                         <Setter Target="SplitterBar.(Grid.RowSpan)" Value="3" />
                         <Setter Target="SplitterBar.(Grid.ColumnSpan)" Value="1" />
                         <Setter Target="SplitterBar.ResizeDirection" Value="Columns" />
-                        <!-- Workaround for https://github.com/CommunityToolkit/Windows/issues/748 -->
+                        <!--  Workaround for https://github.com/CommunityToolkit/Windows/issues/748  -->
                         <Setter Target="SplitterBar.Orientation" Value="Vertical" />
 
                         <Setter Target="SplitterCommandBarLeft.(Grid.Row)" Value="0" />