Custom Class Equality

[rmatthew]

I have an array of a custom class that I have written.

 

I have attempted to do an indexof to check for equality (i.e. is there a copy of the class already assigned to the array.)

 

Array.IndexOf doesn't seem to work, and if I check for direct equality then I do not get what I would expect there either...

 

Must I create an equality of some sort in the class it self?

[Cags]

Thats probably because you consider a class equal due to its values wheras by default .Net will check if the two classes reference the same block in memory. I believe the answer is to overide the Equals method of your class. Then use class1.Equals(class2) instead of class1 == class2.

[snarfblam]

Do you want to see if they are the same object? If so, use Object.ReferenceEquals, or cast the objects to the Object type and use the == (or = in VB) operator.

 

If you want to see if they have the same value, create your own Equals function or overload the Equals operator.