c# - Difference between this and base

Question

I am interested to know the difference between this and base object in C#. What is the best practice when using them?

Answer 1

this represents the current class instance while base the parent. Example of usage:

public class Parent
{
    public virtual void Foo()
    {
    }
}

public class Child : Parent
{
    // call constructor in the current type
    public Child() : this("abc")
    {
    }

    public Child(string id)
    {
    }

    public override void Foo()
    { 
        // call parent method
        base.Foo();
    }
}