What Does Hash Code Mean?
Hash code in .NET framework is a numeric value which helps in identification of an object during equality testing and also can serve as an index for the object. The value contained in the hash code is not permanent in nature. The purpose of hash code is to help in efficient lookup and insertion in data collections which are based on a hash table.
Techopedia Explains Hash Code
Two objects are considered equal if they return equal hash codes. However, matching resultant hash codes do not necessarily mean object equality, or in other words, the reverse does not hold true. Because of this reason, hash code should never be used outside the boundaries of the application domain, as the same object could have different values outside the domain, processes or platforms.
