create a child app in csharp

To create a child app in C#, you can make use of inheritance in Windows Forms. Inheritance is a feature of Object-Oriented Programming that allows child classes to inherit properties and methods from their parent class. You can create a child app in the following steps:

1. Open Visual Studio and create a new Windows Forms application.

2. On the Solution Explorer window, right-click on the project and select Add > New Item.

3. Select Windows Form from the list of templates and give it a name, such as ChildForm.cs. This new form will be the child form of the main form.

4. In the code behind of the main form, create a new instance of the child form using the new keyword.

main.cs
ChildForm cf = new ChildForm();
cf.Show();
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5. In the code behind of the child form, add any additional functionality required. You can also use properties/methods of the parent form on the child form by making them protected.

main.cs
//Parent form
protected void DoSomething(){...}

//Child form
DoSomething();
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By following these steps, you can create a child app in C# using Windows Forms and inheritance.