错误：mscorlib.dll中发生了'System.StackOverflowException'类型的未处理异常

Question

Today I started working with classes. I created some classes to get my MainWindow.xmal.cs a bit smaller. After creating the first classes and debugging, I get the following error message:

Eine nicht behandelte Ausnahme des Typs "System.StackOverflowException" ist in mscorlib.dll aufgetreten.

Eine nicht behandelte Ausnahme des Typs "System.StackOverflowException" ist in APPLICATION.exe aufgetreten.

class Sprachpaket_ENG_Template01
{
    MainWindow MW = new MainWindow();

    public void Template01()
    {
        MW.checkBox_1_Bcc.Content = "Bcc:";
        MW.checkBox_1_Cc.Content = "Cc:";
    }

--> This causes the error: MainWindow MW = new MainWindow();

Answer 1

From your edits and comments, you have this:

class Sprachpaket_ENG_Template01
{
    // Create a new MainWindow whenever Sprachpaket_ENG_Template01 is created
    MainWindow MW = new MainWindow();
}

class MainWindow()
{
    public MainWindow()
    {
        // Create a new Sprachpaket_ENG_Template01 whenever MainWindow is created
        Sprachpaket_ENG_Template01 ENG_01 = new Sprachpaket_ENG_Template01();
    }
}

You have an infinite loop here, which is why you're getting a stack overflow.

You probably wanted to pass MainWindow as a parameter to the Sprachpaket_ENG_Template01 constructor:

class Sprachpaket_ENG_Template01
{
    MainWindow MW;

    public Sprachpaket_ENG_Template01(MainWindow mw)
    {
        MW = mw;
    }
}

class MainWindow()
{
    public MainWindow()
    {
        Sprachpaket_ENG_Template01 ENG_01 = new Sprachpaket_ENG_Template01(this);
    }
}