How to set default value for Auto-Implemented Properties in ASP.NET

Question

I came to know that C# 3.0 comes with a new feature of Auto-Implemented Properties,I liked it as we don't have to declare extra private varible in this (compare to earlier property), earlier I was using a Property i.e.

private bool isPopup = true;
public bool IsPopup
{
    get
    {
      return isPopup;
    }
    set
    {
      isPopup = value;
    }
}

Now I've converted it into Auto-Implemented property i.e.

public bool IsPopup
{
    get; set;
}

I want to set the default value of this property to true without using it not even in page_init method, I tried but not succeeded, Can anyone explain how to do this?

Answer 1

You can initialize the property in the default constructor:

public MyClass()
{
   IsPopup = true;
}

With C# 6.0 it is possible to initialize the property at the declaration like normal member fields:

public bool IsPopup { get; set; } = true;  // property initializer

It is now even possible to create a real read-only automatic property which you can either initialize directly or in the constructor, but not set in other methods of the class.

public bool IsPopup { get; } = true;  // read-only property with initializer