Unique HashCode Generation for Unique object using C#
This question already has an answer here:
您可以使用xor来包含所有相关属性的哈希码。
void Main() {
var emp = new Employee {
Id = 123,
FirstName = "Billy",
LastName = "Bobby", // lol, it's actually two first names
};
int originalHash = emp.GetHashCode();
emp.FirstName = "Timmy";
Console.WriteLine ("Original: {0}, Current: {1}", originalHash, emp.GetHashCode());
}
class Employee {
public long Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public override int GetHashCode() {
return this.Id.GetHashCode()
^ this.FirstName.GetHashCode()
^ this.LastName.GetHashCode();
}
public override bool Equals(object other) {
var otherEmployee = other as Employee;
return otherEmployee != null
&& otherEmployee.Id == this.Id
&& otherEmployee.FirstName == this.FirstName
&& otherEmployee.LastName == this.FirstName;
}
}