Regular Expression

 
  using System; 
  using System.Collections.Generic; 
  using System.ComponentModel; 
  using System.Data; 
  using System.Drawing; 
  using System.Linq; 
  using System.Text; 
  using System.Text.RegularExpressions; 
  using System.Threading.Tasks; 
  using System.Windows.Forms; 
   
  namespace WindowsFormsApplication1 
  { 
      public partial class Form1 : Form 
      { 
          public Form1() 
          { 
              InitializeComponent(); 
          } 
   
          private void button1_Click(object sender, EventArgs e) 
          { 
              string str = "ADI:AliSOYADI:KartepeYASI:22"; 
   
              int startAd = str.IndexOf("ADI:") + "ADI:".Length; 
              int endAd = str.IndexOf("SOYADI:"); 
              string ad = str.Substring(startAd, endAd - startAd); 
   
              int statSoyad = str.IndexOf("SOYADI:") + "SOYADI:".Length; 
              int endSoyad = str.IndexOf("YASI:"); 
              string soyad = str.Substring(statSoyad, endSoyad - statSoyad); 
   
              int startYas = str.IndexOf("YASI:") + "YASI:".Length; 
              string yasi = str.Substring(startYas, str.Length - startYas); 
               
              textBox1.Text = ad; 
              textBox2.Text = soyad; 
              textBox3.Text = yasi; 
          } 
   
          private void button2_Click(object sender, EventArgs e) 
          { 
              string s = "ADI:AliSOYADI:KartepeYASI:22"; 
              string[] result = 
                Regex.Matches(s, @"(?s)(?<=ADI:).+?(?=SOYADI:)").Cast<Match>().Select(m => m.Value).ToArray(); 
   
              foreach (string value in result) 
              { 
                  listBox1.Items.Add(value); 
              } 
          } 
      } 
  }