Open Windows Form after Wait progress bar finish using C# and VB.Net

Hi evoteam21 ,

Please refer below sample code.

Web Form

Here I created two web form.

Form1

Form2

Here I add empty form because when progress bar is 100 then it displays Form2 window.

Namespace

C#

using System.Threading;

VB.Net

Imports System.Threading

Code

C#

private void Form1_Load(object sender, EventArgs e)
{
    backgroundWorker1.WorkerReportsProgress = true;
    backgroundWorker1.RunWorkerAsync();
}

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    for (int i = 1; i <= 100; i++)
    {
        Thread.Sleep(100);
        backgroundWorker1.ReportProgress(i);
    }
}

private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressBar1.Value = e.ProgressPercentage;
    lblPercentage.Text = e.ProgressPercentage.ToString() + "%";
    if (e.ProgressPercentage == 100)
    {
        Form2 frm2 = new Form2();
        frm2.Show();
    }
}

VB.Net

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
    backgroundWorker1.WorkerReportsProgress = True
    backgroundWorker1.RunWorkerAsync()
End Sub

Private Sub backgroundWorker1_DoWork(sender As System.Object, e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
    For i As Integer = 1 To 100
        Thread.Sleep(100)
        BackgroundWorker1.ReportProgress(i)
    Next
End Sub

Private Sub backgroundWorker1_ProgressChanged(sender As System.Object, e As System.ComponentModel.ProgressChangedEventArgs) Handles BackgroundWorker1.ProgressChanged
    ProgressBar1.Value = e.ProgressPercentage
    lblPercentage.Text = e.ProgressPercentage.ToString() & "%"

    If e.ProgressPercentage = 100 Then
        Dim frm2 As Form2 = New Form2()
        frm2.Show()
    End If
End Sub

Screenshot