C#

RobCroll wrote:

in remote locations

gmhanna wrote:

I'm concerned about the properties getting overlaid by the next caller

public sealed class Singleton {
    private static Singleton _instance = null;
    private static readonly object singletonLock = new object();

    private Singleton() {}

    public static Singleton Instance {
        get {
            lock (singletonLock) {
                if (_instance == null) {
                    _instance = new Singleton();
                }
                return _instance;
            }
        }
    }
}

Don Rolando wrote:

In a simple hello world application this worked pretty well; but in some other
application exactly the same approach never passes the second WaitOne(). Just as
if noone would call Set anymore (but the other process still
does!)
 

jschell wrote:

I bet you were doing work in there.

private void dataGridView1_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)
    {
    dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = "NO!";
    }