public void TestWriteSheetWithSheetName()
        {
            var dt = GetTestData();

            string dataFilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "file", "onesheetfile.xlsx");
            NPOIOperator oper = new NPOIOperator(dataFilePath, true);

            var writeLineNumber = oper.WriteSheet("Sheet3", dt, true);
            Assert.AreEqual(4, writeLineNumber);

            var readDT = oper.ReadSheet("Sheet3", true);
            Assert.AreEqual(3, readDT.Rows.Count);
        }
        public void TestFlushWithXls()
        {
            var dt = GetTestData();

            var fileName = "write" + Guid.NewGuid().ToString() + ".xls";
            string dataFilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "file", fileName);
            NPOIOperator oper = new NPOIOperator(dataFilePath, true);
            oper.WriteSheet("Sheet3", dt, true);
            oper.Flush();

            try
            {
                NPOIOperator oper2 = new NPOIOperator(dataFilePath, true);
                var sheet = oper2.GetSheet("Sheet3");
                var dt2 = oper2.ReadSheet(sheet, true, true, 0);

                Assert.AreEqual(3, dt2.Rows.Count);
                Assert.AreEqual("李四", dt2.Rows[1]["姓名"]);
                Assert.AreEqual(new DateTime(2000, 8, 8), dt2.Rows[1]["出生日期"]);
            }
            finally
            {
                File.Delete(dataFilePath);
            }
        }
        public void TestWriteSheetWithSheetInstanceAndRowNumberAndNoTitle()
        {
            var dt = GetTestData();

            string dataFilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "file", "onesheetfile.xlsx");
            NPOIOperator oper = new NPOIOperator(dataFilePath, true);

            var sheet = oper.GetSheet("Sheet3");
            var writeLineNumber = oper.WriteSheet(sheet, dt, false, 2);
            Assert.AreEqual(5, writeLineNumber);

            var readDT = oper.ReadSheet(sheet, false, 2);
            Assert.AreEqual(3, readDT.Rows.Count);

            Assert.AreEqual("李四", readDT.Rows[1]["列2"].ToString());
        }