ContainsKey problem

Hi,
In case that u have generic Dictionary with non primitive key - ContainsKey function will return u a bad answer because this function compare objects by refrence an NOT by value!
so, if u have same key values in the Dictionary and in your test object u will get negative answer.
the solution is 2 override Equals and GetHashCode functions:

//@@@ I have Dictionary with Key_Event5 object as the key
Dictionary<Key_Event5, Event5_Employment> dictEmployment;
//@@@ 4 support ContainsKey function compare by value, i'll implement Key_Event5 on this way:
public class Key_Event5
{
    public int iFormID { get; set; }
    public int iEmploymentCode { get; set; }
    public Key_Event5(int iFormID, int iEmploymentCode)
    {
        this.iFormID = iFormID;
        this.iEmploymentCode = iEmploymentCode;
    }

    public override bool Equals(object obj)
    {
        Key_Event5 oKey_Event5 = obj as Key_Event5;
        if (oKey_Event5 == null)
        return false;
        //@@@ Compare by iFormID and iEmploymentCode
        return Equals(iFormID, oKey_Event5.iFormID) 
            && Equals(iEmploymentCode, oKey_Event5.iEmploymentCode);

    }
    public override int GetHashCode()
    {
        return iFormID.GetHashCode() ^ iEmploymentCode.GetHashCode();
    }
}
//@@@ And now this line will work 
dictEmployment.ContainsKey(oKey_Event5)