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.NET 8 Blazor Server App _Host Routing Internal Server Error

 When firing up a new Blazor Server App with .NET 8 Preview, the following error was occurring.   An unhandled exception occurred while processing the request. InvalidOperationException: Cannot find the fallback endpoint specified by route values: { page: /_Host, area: }. Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.DynamicPageEndpointMatcherPolicy.ApplyAsync(HttpContext httpContext, CandidateSet candidates) To resolve, the project file can be updated with   References https://github.com/dotnet/aspnetcore/issues/36535#issuecomment-919861308 More info available on UseRazorSourceGenerator at  https://learn.microsoft.com/en-us/aspnet/core/razor-pages/sdk?view=aspnetcore-7.0
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Enable .NET 8 Preview in Visual Studio

Download the SDK using Download .NET 8.0 (Linux, macOS, and Windows) (microsoft.com)  and install it. To enable projects to target the .NET 8 preview framework, the preview option in Visual Studio needs to be enabled, otherwise the option to target .NET 8 will not be available as shown below when setting up a new project (or trying to upgrade an existing one). To allow .NET 8 Preview to be used as a target framework for projects, the preview option needs to be enabled in Visual Studio. Open Visual Studio and select "Continue without code" In Visual Studio, select Tools then Options In Options, under Environment, select Preview Features and enable Use previews of the .NET SDK.

Find Which Process or Program is Using a File or Directory

For whatever a reason a file of directory may get locked or blocked by another process or program. To find out which Process Explorer can be used available at  https://docs.microsoft.com/en-us/sysinternals/downloads/process-explorer .

Git Snippets

Just a record of useful or infrequently used Git snippets: To take all of the changes from the branch to be merged i.e. theirs: File: git-merge-all-their-changes ------------------------- git merge -Xtheirs branch-to-merge

Change File Encoding with Powershell

To bulk modify the encoding of files using PowerShell: File: alter-encoding.ps ----------------------- Get-ChildItem -Path C:\some-dir\* -Include *.ext -Recurse | ForEach-Object { $content = Get-Content $_.FullName $content | Out-File -Encoding UTF8NoBOM $_.FullName #write-host "Encoding changed:" $_.FullName } Requirements PowerShell 6.2.3   References Microsoft Docs PowerShell 6 Get-ChildItem Microsoft Docs PowerShell 6 ForEach-Object

VWD Express 2010 Unit Tests with xUnit and MVC Templates

Microsoft's Visual Web Developer 2010 Express (VWD 2010 Express), by default does not come with a built in unit testing solution. However the ability is there to use unit tests with the Express version as can be seen when creating a new MVC project. Tech spec stuff: Microsoft Windows 7 Microsoft Visual Studio 2010 Express, Version 10.0.40219.1 SP1 Microsfot .NET Framework Version 4.0.30319 SP1 Getting started with xUnit xUnit is a "developer testing framework, built to support Test Driven Development (TDD)". There are other unit testing frameworks available (MSTest, nUnit, etc.). There are pro's to each and some better than others but xUnit is pretty straightforward to get up and running with the VWD 2010 Express version. Download and Install xUnit The xUnit project can be found at:  http://xunit.codeplex.com/ . Downloads are available from  http://xunit.codeplex.com/releases/view/62840 . Download the recommended version (currently 1.8 at time of writi

EF CodeFirst Database.SetInitializser Requires Connection to 'master' Database Error

One of the features of EF CodeFirst is the ability to automatically drop and recreate a database if the model changes or if the database does not exist, which is pretty useful when just doing development work. In a web app this is done in the Global.asax file within "protected void Application_Start()" as per this post from Scott Guthrie -  http://weblogs.asp.net/scottgu/archive/2010/07/16/code-first-development-with-entity-framework-4.aspx . An example would be: protected void Application_Start() { Database.SetInitializer<yourdbcontex>(new DropCreateDatabaseIfModelChanges<yourdbcontext>()); AreaRegistration.RegisterAllAreas(); RegisterGlobalFilters(GlobalFilters.Filters); RegisterRoutes(RouteTable.Routes); } However when using the Database.SetInitializer and trying to rebuild the database, the following exception may be encountered, especially if using SQL Server Express: "This operation requires a connection to the 'master'