System.Data.Tests.DataTableTest.ClearReset C# (CSharp) Method

        public void ClearReset() //To test Clear and Reset methods
        {
            DataTable table = new DataTable("table");
            DataTable table1 = new DataTable("table1");

            DataSet set = new DataSet();
            set.Tables.Add(table);
            set.Tables.Add(table1);

            table.Columns.Add("Id", typeof(int));
            table.Columns.Add("Name", typeof(string));
            table.Constraints.Add(new UniqueConstraint("UK1", table.Columns[0]));
            table.CaseSensitive = false;

            table1.Columns.Add("Id", typeof(int));
            table1.Columns.Add("Name", typeof(string));

            DataRelation dr = new DataRelation("DR", table.Columns[0], table1.Columns[0]);
            set.Relations.Add(dr);

            DataRow row = table.NewRow();
            row["Id"] = 147;
            row["name"] = "Roopa";
            table.Rows.Add(row);

            row = table.NewRow();
            row["Id"] = 47;
            row["Name"] = "roopa";
            table.Rows.Add(row);

            Assert.Equal(2, table.Rows.Count);
            Assert.Equal(1, table.ChildRelations.Count);
            try
            {
                table.Reset();
                Assert.False(true);
            }
            catch (ArgumentException)
            {
            }

            Assert.Equal(0, table.Rows.Count);
            Assert.Equal(0, table.ChildRelations.Count);
            Assert.Equal(0, table.ParentRelations.Count);
            Assert.Equal(0, table.Constraints.Count);

            table1.Reset();
            Assert.Equal(0, table1.Rows.Count);
            Assert.Equal(0, table1.Constraints.Count);
            Assert.Equal(0, table1.ParentRelations.Count);

            // clear test
            table.Clear();
            Assert.Equal(0, table.Rows.Count);
            Assert.Equal(0, table.Constraints.Count);
            Assert.Equal(0, table.ChildRelations.Count);
        }