How to wait for thread to complete without blocking UI

Question

I want my program to wait after below line

frmProgressBarObj = PullMSI.ExtractByMSIName(\"products.txt\", false);

as above method is intern

Answer 1

If you're using .NET 4.0 (with VS2012) or above, you can do this quite easily with the Task Parallel Library and async-await:

private async void button1_Click(object sender, EventArgs e)
{
    frmProgressBar frmProgressBarObj = await Task.Run(() =>
                      PullMSI.ExtractByMSIName("products.txt", false));

    MessageBox.Show(string.Format("Returned {0}", frmProgressBarObj.ToString());
}

For .NET 4, you'll need to add Microsoft.Bcl.Async.