gistfile1.txt

class MyBusinessObject
{
  public int? MyNullable;

  public bool HasSomeBusinessProperty
  {
    get { return myNullable.HasValue; }
  }
}

...

if (myBusinessObject.HasSomeBusinessProperty)
{
  // do something with myBusinessObject.MyNullable.Value <-- ReSharper complains about possible InvalidOperationException
}