System.Data.Tests.DataColumnCollectionTest.CanRemove C# (CSharp) Method

        public void CanRemove()
        {
            DataTable Table = new DataTable("test_table");
            DataTable Table2 = new DataTable("test_table_2");
            DataColumnCollection Cols = Table.Columns;
            DataColumn C = new DataColumn("test1");
            Cols.Add();

            // LAMESPEC: MSDN says that if C doesn't belong to Cols
            // Exception is thrown.
            Assert.False(Cols.CanRemove(C));

            Cols.Add(C);
            Assert.True(Cols.CanRemove(C));

            C = new DataColumn();
            C.Expression = "test1 + 2";
            Cols.Add(C);

            C = Cols["test2"];
            Assert.False(Cols.CanRemove(C));

            C = new DataColumn("t");
            Table2.Columns.Add(C);
            DataColumnCollection Cols2 = Table2.Columns;
            Assert.True(Cols2.CanRemove(C));

            DataSet Set = new DataSet();
            Set.Tables.Add(Table);
            Set.Tables.Add(Table2);
            DataRelation Rel = new DataRelation("Rel", Table.Columns[0], Table2.Columns[0]);
            Set.Relations.Add(Rel);

            Assert.False(Cols2.CanRemove(C));
            Assert.False(Cols.CanRemove(null));
        }