System.Data.UniqueConstraint.GetHashCode C# (CSharp) Méthode

        public override int GetHashCode()
        {
            return base.GetHashCode();
        }

		public void EqualsAndHashCode ()
		{
			UniqueConstraint cst = new UniqueConstraint (new DataColumn [] {
					_table.Columns[0], _table.Columns[1]});
			UniqueConstraint cst2 = new UniqueConstraint (new DataColumn [] {
					 _table.Columns[1], _table.Columns[0]});

			UniqueConstraint cst3 = new UniqueConstraint (_table.Columns [0]);
			UniqueConstraint cst4 = new UniqueConstraint (_table.Columns [2]);
			
			//true
			Assert.That (cst.Equals (cst2), Is.True, "A0");
			
			//false
			Assert.That (cst.Equals (23), Is.False, "A1");
			Assert.That (cst.Equals (cst3), Is.False, "A2");
			Assert.That (cst3.Equals (cst), Is.False, "A3");
			Assert.That (cst.Equals (cst4), Is.False, "A4");

			//true
			Assert.That (cst.GetHashCode (), Is.EqualTo (cst2.GetHashCode ()), "HashEquals");

			//false
			Assert.That (cst.GetHashCode (), Is.Not.EqualTo (cst3.GetHashCode ()), "Hash Not Equals");
		}