Update FormatSolution samples to use new MSBuildWorkspace

NuGet.config

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+    <packageSources>
+        <clear />
+        <!-- This package feed is temporary until Microsoft.CodeAnalysis.Workspaces.MSBuild is released on https://nuget.org. -->
+        <add key="Roslyn" value="https://dotnet.myget.org/F/roslyn/api/v3/index.json" />
+        <add key="NuGet" value="https://api.nuget.org/v3/index.json" />
+    </packageSources>
+</configuration>

samples/CSharp/FormatSolution/FormatSolution.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -14,9 +14,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Build" Version="15.3.409" />
-    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="15.3.409" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="2.6.0" />
+    <PackageReference Include="Microsoft.Build.Locator" Version="1.0.13" />
+
+    <!-- These package versions should be updated to 2.9.0 when released on NuGet -->
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="2.9.0-beta4-62810-05" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="2.9.0-beta4-62810-05" />
   </ItemGroup>
 
 </Project>

samples/CSharp/FormatSolution/Program.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Threading.Tasks;
+using Microsoft.Build.Locator;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.Formatting;
 using Microsoft.CodeAnalysis.MSBuild;
@@ -9,6 +10,9 @@ static class Program
 {
     static async Task Main(string[] args)
     {
+        // Locate and register the default instance of MSBuild installed on this machine.
+        MSBuildLocator.RegisterDefaults();
+
         // The test solution is copied to the output directory when you build this sample.
         MSBuildWorkspace workspace = MSBuildWorkspace.Create();
 

samples/VisualBasic/FormatSolution/FormatSolution.vb

@@ -1,5 +1,6 @@
 ' Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
+Imports Microsoft.Build.Locator
 Imports Microsoft.CodeAnalysis
 Imports Microsoft.CodeAnalysis.Formatting
 Imports Microsoft.CodeAnalysis.MSBuild
@@ -8,12 +9,14 @@ Imports Microsoft.CodeAnalysis.MSBuild
 Module Program
 
     Sub Main(args As String())
+        ' Locate and register the default instance of MSBuild installed on this machine.
+        MSBuildLocator.RegisterDefaults()
 
         ' The test solution is copied to the output directory when you build this sample.
         Dim workspace As MSBuildWorkspace = MSBuildWorkspace.Create()
 
         ' Open the solution within the workspace.
-        Dim originalSolution As Solution = workspace.OpenSolutionAsync("TestSolutionForVB\Test.sln").Result
+        Dim originalSolution As Solution = workspace.OpenSolutionAsync(args(0)).Result
 
         ' Declare a variable to store the intermediate solution snapshot at each step.
         Dim newSolution As Solution = originalSolution

samples/VisualBasic/FormatSolution/FormatSolution.vbproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -6,9 +6,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Build" Version="15.3.409" />
-    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="15.3.409" />
-    <PackageReference Include="Microsoft.CodeAnalysis.VisualBasic.Workspaces" Version="2.6.0" />
+    <PackageReference Include="Microsoft.Build.Locator" Version="1.0.13" />
+
+    <!-- These package versions should be updated to 2.9.0 when released on NuGet -->
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="2.9.0-beta4-62810-05" />
+    <PackageReference Include="Microsoft.CodeAnalysis.VisualBasic.Workspaces" Version="2.9.0-beta4-62810-05" />
   </ItemGroup>
 
 </Project>