System.Data.Tests.DataTableCollectionTest2.DataTableCollection_Add_D4 C# (CSharp) Метод

        public void DataTableCollection_Add_D4()
        {
            var ds = new DataSet();
            ds.Tables.Add();

            DataTable dt = new DataTable("Table1");
            Assert.Throws<DuplicateNameException>(() => ds.Tables.Add(dt));
        }