Bind a label to a “variable”

Question

Say I have a global variable INT named X. Since X is global, we can assume that anything can modify its value so it is being changed everytime.

Say I have a Label co

Answer 1

For a multi-threaded program (so almost every windows forms program) iCe's answer is not a good one, because it won't let you change the label anyway (you will get some cross-threading error). The simplest way to fix the problem is creating property in setter:

private string _labelText;
public string labelText
{
    get { return _labelText; }
    set
    {
        _labelText = value;
        updateLabelText(_labelText); //setting label to value
   }
}

where updateLabelText(string) is thread safe:

delegate void updateLabelTextDelegate(string newText);
private void updateLabelText(string newText)
{
     if (label1.InvokeRequired)
     {
          // this is worker thread
          updateLabelTextDelegate del = new updateLabelTextDelegate(updateLabelText);
          label1.Invoke(del, new object[] { newText });
     }
     else
     {
          // this is UI thread
          label1.Text = newText;
     }
}