Question

I am trying to assign a line of text as a string, so the string can be used in a message box, although the string fails to show up in the message box when the method is executed.

public string version { get; set; }

public void GetVersion()
{
    var version = File.ReadAllText("version.txt");
}


private void SetBalloonTip()
{
    notifyIcon1.Icon = SystemIcons.Exclamation;
    notifyIcon1.BalloonTipTitle = "Test";
    notifyIcon1.BalloonTipText = "This is version " + version;
    notifyIcon1.BalloonTipIcon = ToolTipIcon.Error;
    this.Click += new EventHandler(button1_Click);
}

Answer 1

Remove the var:

version = File.ReadAllText("version.txt");

By adding the var (or any variable type for that matter) you’re creating local variable, while you want to assign the class member.

Happens to me too sometimes, and I see this as downside of C# as I would expect at least a warning when compiling such a thing.