Question

I do some checks on form load, but it is locking the form for a period (some thousandths of seconds). For this reason, I want to display a message such as “loading application..”, but I have no idea how I do this. I hope this clear! Any help is very appreciated. Thanks in advance.

Answer 1

Ideally what you want to do is to perform your checks on a background thread, so that the UI thread isn’t blocked. Have a look at the BackgroundWorker class.

You should hook your checks to the DoWork event of the background worker, and call the BackgroundWorker’s RunWorkerAsync() method from the Form_Load event to kick off the background work.

Something like this (note, this is untested):

BackgroundWorker bw = new BackgroundWorker();
public void Form_Load(Object sender, EventArgs e) {
    // Show the loading label before we start working...
    loadingLabel.Show();
    bw.DoWork += (s, e) => {
       // Do your checks here
    }
    bw.RunWorkerCompleted += (s, e) => { 
       // Hide the loading label when we are done...
       this.Invoke(new Action(() => { loadingLabel.Visible = false; })); 
    };
    bw.RunWorkerAsync();
}