open file dialog box problem in web application aspx page

Question

I am able to open the open file dialog box with this code.Its working fine with this code...
OpenFileDialog fDialog = new OpenFileDialog();
[STAThread]
protected void Button1_Click(object sender, EventArgs e)
{
Thread MyThread = new Thread(ThreadMethod);
MyThread.SetApartmentState(ApartmentState.STA);
MyThread.Start();
}
public void ThreadMethod()
{
fDialog.Title = "Image";
fDialog.Filter = "Image|*.jpg;*.jpeg;*.gif;*.png";
string dir = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
fDialog.InitialDirectory = dir;
fDialog.Multiselect = true;
fDialog.AddExtension = true;
fDialog.CheckFileExists = true;
fDialog.CheckPathExists = true;
fDialog.DereferenceLinks = true;
fDialog.ValidateNames = true;
fDialog.ShowHelp = true;
fDialog.AutoUpgradeEnabled = true;
fDialog.RestoreDirectory = true;
DialogResult dr = this.fDialog.ShowDialog();
}
My problem is..when i click the button.the fileopen dialog box opens back to web page...how to bring that control infront of web page...any idea please help me out.only in web application

Felipe Ramos · Answer

I don't think the OpenFileDialog is supported for the Web. You'll need to use the FileUpload control from .NET, it will look something like
code:
protected void fuUploader_Click(object sender, EventArgs e)         {             if (fuUploader.HasFile)             {                 //fuUploader.FileContent to get the Stream             }         }
There is an ajax extender you could use as well and articles on how to create a multiple upload control on the web.