C#

{
//form class

private void Form1_Load(object sender, EventArgs e)
     {
         ArrayList list = new ArrayList();
         MyPair f = new MyPair("A", "B");
         list.Add(f);
         listBox1.DataSource = list;
         listBox1.DisplayMember = "second";
     }
 }

 class MyPair
 {
     public object First { get; set; }
     public object Second { get; set; }
     public MyPair(object a, object b)
     {
         this.First = a;
         this.Second = b;
     }
 }

checkedListBox1.SetItemCheckState(1, CheckState.Indeterminate);

Regex regex = new Regex(
    @"\d+x\s\#\w*[^$]+\$\d+\.\d+",
    RegexOptions.IgnoreCase
    | RegexOptions.Multiline
    | RegexOptions.ExplicitCapture
    | RegexOptions.IgnorePatternWhitespace
    | RegexOptions.Compiled
    );