Thanks you for the interest in my project. The thing is that recently I learned SQL-language and administration of mySQL database and I wanted to figure out how to implement databases in my C# ...

WPF, as previously described, is a fusion of XAML (markup) and C#/VB.NET/any other .NET language. While you can edit all of it in any text editor, even Notepad included in Windows, and then compile it ...