In preperation for the Microsoft Programming in C# 70-483 exam, I've created a free study guide.In preperation for the Microsoft Programming in C# 70-483 exam, I've created a free study guide.I ran into the following error while working with Blazor. Error: There was an exception invoking 'MethodName' on assembly 'AssemblyName'. For more details turn on detailed exceptions in 'CircuitOptions.DetailedErrors'. Here's the fix.No need for an extension or ReSharper to sort and remove unnecessary using statements in .NET projects with Visual Studio. This is now built in, but you have to enable it.Here's a quick fix for Entity Framework's Validation 30000 errors that show up on decimal columns.While messing around with .NET Core 2 and Identity, I ran into this error.It can be useful to run different services in Development vs Production. The .NET Core templates do this within certain methods, such as the Configure method in the Startup class but there is no example of how to do it in the ConfigureServices method within the Startup Class.Don't let your Startup.cs file turn into a mess. Use extension methods to keep it clean.