C#

Development

• Debug a C# application in Visual Studio with command line arguments

.NET Frameworks

• Download .NET SDKs for Visual Studio

Secure your .NET application

•  Developing a secure .NET 8 (core) console application

.NET console applications

• Build a standalone Windows executable in Visual Studio

ASP.NET Web Application

• Create an ASP.NET MVC 5 Web Application with user authentication
• Configure the ASP.NET MVC 5 web application to use an external database for user authentication
• Block comment in ASP.NET MVC Razor file
• Return values to the controller in the model from the ASP.NET MVC view
• Set the environment for an ASP.NET Core MVC web application
• Add jQuery DataTables grid to an ASP.NET Core MVC web application
• Add identity into an ASP.NET Core 2.1 MVC project and maintain full control of the Identity UI
• Read the database connection string and other secrets from environment variables
• Turn off the GDPR cookie notification in a dotnet core MVC web application

Microsoft Entity Framework

• Reverse engineer a database with AspNetCore in Visual Studio
• Enable .NET Core Entity Framework Linq query execution
• Generate SQL script from Entity Framework migration script
• Generate Entity Framework Entity Data Model in Visual Studio 2017
• Connect to a MySQL database from Visual Studio 2017

Application Build

• Build a .NET Core C# application on a Linux computer

Application Deployment

• TARGETDIR property is ignored during application install

Troubleshooting

• RuntimeIdentifier is required for native compilation. Try running dotnet publish with the -r option value specified.
• Data is Null. This method or property cannot be called on Null values.
• DbUpdateConcurrencyException: Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded.
• {“error”:”Entity type ‘AspNetUserRoles’ has composite primary key defined with data annotations. To set composite primary key, use fluent API.”}
• The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)
• NotSupportedException: Unable to determine the provider name for provider factory of type ‘MySql.Data.MySqlClient.MySqlClientFactory’. Make sure that the ADO.NET provider is installed or registered in the application config
• No connection string named ‘…’ could be found in the application config file.
• Procedure or function ‘`…_Insert`’ cannot be found in database …
• Error unprotecting the session cookie in an ASP.NET Core MVC application.
• Could not create an instance of type ‘Microsoft.AspNetCore.Http.HttpContext’
• Form value count limit 1024 exceeded