System.Data.Tests.DataColumnCollectionTest2.Count C# (CSharp) Method

        public void Count()
        {
            DataTable dt = DataProvider.CreateParentDataTable();

            Assert.Equal(6, dt.Columns.Count);

            dt.Columns.Add("temp1");
            Assert.Equal(7, dt.Columns.Count);

            dt.Columns.Remove("temp1");
            Assert.Equal(6, dt.Columns.Count);

            dt.Columns.Remove("ParentId");
            Assert.Equal(5, dt.Columns.Count);
        }