System.Data.Tests.DataTableReaderTest.CloseTest C# (CSharp) Метод

        public void CloseTest()
        {
            Assert.Throws<InvalidOperationException>(() =>
            {
                DataTableReader reader = new DataTableReader(_dt);
                try
                {
                    int i = 0;
                    while (reader.Read() && i < 1)
                        i++;
                    reader.Close();
                    reader.Read();
                }
                finally
                {
                    if (reader != null && !reader.IsClosed)
                        reader.Close();
                }
            });
        }