C#

public string ConnectStr
{
  get
  {
    return _ConnectStr;
  }
  private set
  {
    _ConnectStr = value;
  }
}

public class DataConnection
{
   private string s = "default";//this is where the string value will be stored, assignment is not required
   public string S{//this is a property that you can access with external class to get/set the value of the private string s
   { 
      get{return s;}
      set{s = value;}
   }
}

DataConnection dc = new DataConnection();
dc.S = "new value";
MessageBox.Show(dc.S);

System.Windows.Forms.MessageBox.Show(def_compare.Length.ToString());

// a list of strings, we will use the List methods, no need to add any code
public class DefCompareProperty : List<string> {}

public class DefComparing:DefCompareProperty {
    public void DefCompare() {
        this.Clear(); // clear the list
        // doing something to the list here using this.Add(...)
    }
}

Luc Pattyn wrote:

another one is: use proper names for everything, it really matters.

Paddy Boyd wrote:

Now we just need to get some way to bring eternal damnation into play...

string programFilesPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ProgramFiles);