using iText.Kernel.Font;
using iText.Kernel.Pdf;
using iText.Layout;
using iText.Layout.Element;
using iText.Layout.Properties;
using System;

namespace IText7Sample
{
    public class Program
    {
        public static void Main()
        {
            PdfFont sysFont = PdfFontFactory.CreateFont(Environment.CurrentDirectory + "/src/fonts/NotoSansCJKtc-Regular.otf", iText.IO.Font.PdfEncodings.IDENTITY_H);

            // Must have write permissions to the path folder
            PdfWriter writer = new PdfWriter(@"demo.pdf");
            PdfDocument pdf = new PdfDocument(writer);
            Document document = new Document(pdf);
            Paragraph header = new Paragraph("標題 HEADER")
               .SetFont(sysFont)
               .SetTextAlignment(TextAlignment.CENTER)
               .SetFontSize(20);

            document.Add(header);
            document.Close();
        }
    }
}

using System;
using System.Text;
using System.Linq;

namespace SubEnglishChineseString
{
    public static class Program
    {
        /// <summary>
        /// C#中擷取某長度中英混雜字串範例
        /// </summary>
        /// <param name="args"></param>
        static void Main(string[] args)
        {
            string str = "TESTWORD測試文字TEST";
            Console.WriteLine(SubBig5String(str, 1, 15));
        }
        /// <summary>
        /// C#中擷取Big5子字串
        /// </summary>
        /// <param name="str">字串</param>
        /// <param name="start">擷取起始索引</param>
        /// <param name="length">擷取長度</param>
        /// <returns>string</returns>
        public static string SubBig5String(string str, int start, int length)
        {
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            byte[] subByteArray = Encoding.GetEncoding("big5").GetBytes(str).Skip(start).Take(length).ToArray();
            return Encoding.GetEncoding("big5").GetString(subByteArray);
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace UnitTestProject
{

    public class Bar
    {
        public virtual bool Submit() { return false; }
    }

}

using System;
using System.Collections.Generic;
using System.Text;

namespace UnitTestProject
{
    public interface IFoo
    {
        Bar Bar { get; set; }
        string Name { get; set; }
        int Value { get; set; }
        bool DoSomething(string value);
    }

}

using System;

using Xunit;
using Moq;

using UnitTestProject;

namespace UnitTestProjectTests
{
    /// <summary>
    /// xUnit單元測試，並使用Moq的Mock
    /// 參考資料:
    /// https://github.com/Moq/moq4/wiki/Quickstart#verification
    /// https://vimsky.com/examples/detail/csharp-ex---Mock-VerifySet-method.html
    /// https://codertw.com/%E5%89%8D%E7%AB%AF%E9%96%8B%E7%99%BC/206352/
    /// </summary>
    public class UnitTest
    {
        /// <summary>
        /// 方法單元測試
        /// </summary>
        [Fact]
        public void MethodsTest()
        {
            // 準備 Mock IFoo 介面
            var mock = new Mock<IFoo>();
            // 配置準備模擬的方法，當呼叫介面中的 DoSomething 方法，並傳遞引數 "bing" 的時候，返回 true
            mock.Setup(foo => foo.DoSomething("ping")).Returns(true);
            // 現在，你可以: 
            IFoo foo = mock.Object;
            // 檢查使用時返回值為True
            Assert.True(foo.DoSomething("ping"));
        }
        /// <summary>
        /// 屬性單元測試
        /// </summary>
        [Fact]
        public void PropertiesTest()
        {
            // 準備 Mock IFoo 介面
            var mock = new Mock<IFoo>();
            // 開始 "tracking" 屬性的 sets/gets 
            mock.SetupProperty(f => f.Name);
            // 提供一個預設的值
            mock.SetupProperty(f => f.Name, "foo");
            // 現在，你可以: 
            IFoo foo = mock.Object;
            // 儲存的值 
            Assert.Equal("foo", foo.Name);
            // 重新設定一個值
            foo.Name = "bar";
            Assert.Equal("bar", foo.Name);
        }
    }
}

Console.WriteLine(nameof(System.Collections.Generic));  // output: Generic
Console.WriteLine(nameof(List<int>));  // output: List
Console.WriteLine(nameof(List<int>.Count));  // output: Count
Console.WriteLine(nameof(List<int>.Add));  // output: Add

var numbers = new List<int> { 1, 2, 3 };
Console.WriteLine(nameof(numbers));  // output: numbers
Console.WriteLine(nameof(numbers.Count));  // output: Count
Console.WriteLine(nameof(numbers.Add));  // output: Add