Visual Studio 2008 Professional Edition
Unit Tests

protected void btnNext_Click(object sender, EventArgs e)
{
    //Response.Redirect("~/logon.aspx");           
    lblTest.Text = "This is test";          
}

[TestMethod()]
[HostType("ASP.NET")]
[UrlToTest("http://localhost/UnitTestPrj/SampleTestPage.aspx")]
[DeploymentItem("UnitTestPrj.dll")]
public void btnNext_ClickTest()
{    
    Page page = testContextInstance.RequestedPage;

    // TODO: Initialize to an appropriate value                                   
    SampleTestPage_Accessor target = new SampleTestPage_Accessor(new PrivateObject(page)); 
    object sender = null;
    EventArgs e = null;
    target.btnNext_Click(sender, e);

    Assert.AreEqual("This is test", target.lblTest.Text);           
}