How to wait until BackgroundWorker finish all calls

Question

I have Add button click event how add file:

private void btnAddfiles_Click(object sender, EventArgs e)
{
    if (openFileDialog1.ShowDialog() == Sys         


        

Answer 1

To prevent UI freezing, you can do this:

while (BackgroundWorker.IsBusy()) {
    Application.DoEvents();
}

I go this from the msdn docs, here