1. การใช้ Split แบบปกติ
2. การใช้ Split แบบกำหนดจำนวนผลลัพธ์ที่ต้องการ
3. การใช้ Split ด้วย multiple separator characters
4. การใช้ Split ด้วย string

• Split string based on the first occurrence of the character
• How to: Parse Strings Using String.Split (C# Guide)

1.การใช้ Split แบบปกติ

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string myString = "101,a,b,c,d";
            string[] items = myString.Split(',' );
            // [0] = "101"
            // [1] = "a"
            // [2] = "b"
            // [3] = "c"
            // [4] = "d"
        }
    }
}

2.การใช้ Split แบบกำหนดจำนวนผลลัพธ์ที่ต้องการ

using System;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            string myString = "101,a,b,c,d";
            string[] items = myString.Split(new[] { ',' }, 2);
            // [0] = "101"
            // [1] = "a,b,c,d"
        }
    }
}

using System;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            string myString = "101,a,b,c,d";
            string[] items = myString.Split(new[] { ',' }, 3);
            // [0] = "101"
            // [1] = "a"
            // [2] = "b,c,d"
        }
    }
}

using System;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            string myString = "101,a,b,c,d";
            string[] items = myString.Split(new[] { ',' }, 4);
            // [0] = "101"
            // [1] = "a"
            // [2] = "b"
            // [3] = "c,d"
        }
    }
}

3.การใช้ Split ด้วย multiple separator characters

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            char[] delimiterChars = { ' ', ',', '.', ':', '\t' };
            string text = "one\ttwo three:four,five six seven";
            string[] items = text.Split(delimiterChars);
            // [0] = "one"
            // [1] = "two"
            // [2] = "three"
            // [3] = "four"
            // [4] = "five"
            // [5] = "six"
            // [6] = "seven"
        }
    }
}

4.การใช้ Split ด้วย string

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] separatingChars = { "<<", "..." };
            string text = "one<<two......three<four";
            string[] items = text.Split(separatingChars, System.StringSplitOptions.RemoveEmptyEntries );
            // [0] = "one"
            // [1] = "two"
            // [2] = "three<four"
        }
    }
}