how to detect a change in a variable in c# code example

Example: c# detect variable change

public class MyClass
{
  private var myVar;
  public var MyVar
  {
    get
    {
      return myVar;
    }
    set
    {
      if(myVar != value)
      {
        myVar = value;
        // Do something
      }
    }
  }
}