C#

int i = Convert.ToInt32 (binaryString, 2);

Convert.ToInt32("0110101", 2);

public class MyClass
{
    public MyClass(string text, int value)
    {
        Text = text;
        Value = value;
    }
    public string Text
    {
        get;
        set;
    }
    public int Value
    {
        get;
        set;
    }
    public override string ToString()
    {
        return string.Format("{0}, Value={1}", Text, Value);
    }
}

listBox.Items.Add(new MyClass("Hello World", 1));

// ...

MyClass myClass = listBox.Items[0] as MyClass;
MessageBox.Show(myClass.Text);

ListView listView1 = new ListView()
lv.Items.Add("Key", "Text", null)

ListViewItem lvi;
lvi.BackColor = Color.Blue;
lvi.Focused = true;
lvi.Selected = true;
lvi.Text = "This is text of an item";
lvi.Name = "This is hidden name of an item";
listView1.Items.Add(lvi);

Saksida Bojan wrote:

Listbox stores only item as a Object (String, int, bool,...). You can't store Value and Text in a single item

public class HTMLGenerator
{
	public List<HTMLTag> Tags { get; private set; }

	public HTMLGenerator(params HTMLTag[] tags)
	{
		this.Tags = new List<HTMLTag>(tags);
	}

	public string GetHTML()
	{
		StringBuilder sb = new StringBuilder();

		foreach(HTMLTag tag in this.Tags)
			sb.Append(tag.ToString());
		return sb.ToString();
	}
}

public class HTMLTag
{
	public List<HTMLTag> Subtags { get; private set; }

	public string InnerText { get; set; }

	public string Name { get; set; }

	public Dictionary<string, string> Attributes { get; private set; }

	public HTMLTag(string name, string innerText)
	{
		this.Name = name;
		this.InnerText = innertext;
		this.Subtags = new List<HTMLTag>();
		this.Attributes = new Dictionary<string, string>()
	}

	public override string ToString()
	{
		//The main meat of the code goes here
		StringBuilder sb = new StringBuilder();

		//Append the start and the name of the HTML tag
		sb.AppendFormat("<{0} ", this.Name);
		/* Then, iterate through each attribute in the Dictionary, appending it in string
		 * form. Note: you have to handle any special character encoding yourself */
		foreach(string attribute in this.Attributes)
			sb.AppendFormat("{0}=\"{1}\" ", attribute, this.Attributes[attribute]);
		if(this.Subtags.Count > 0)
		{
			//Close the tag and recurse for every child tag
			sb.AppendLine(">");
			foreach(HTMLTag tag in this.Subtags)
				sb.AppendLine(tag.ToString());
			sb.AppendFormat(">/{0}<", this.Name);
		}
		else
			/* If there aren't any subtags, we can just close it like this, without
			* writing an ending tag */
			sb.AppendLine(" />");
		return sb.ToString();
	}
}