How is a method added to a control in a Windows form using C# project?

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How is a method added to a control in a Windows form using C# project?

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In a Windows form, a method is added to a control in the same way as it is added to a form or a class. In the Code window of the form, a method declaration and a method body is added within the bounds of the class declaration. A method can be added to a control in two ways. A void method is created when a method does not return a value. For example:

public void AddString(string MyString1, string MyString2)
{
   string str = MyString1 + MyString1;
   MessageBox.Show(str);
}

A return type method is specified when a method returns a value. For example:

public string AddString(string MyString1, string MyString2)
{
    string str = MyString1 + MyString1;
    return str;
}

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