file upload control in asp.net

protected void UploadButton_Click(object sender, EventArgs e)
  {
    // Specify the path on the server to
    // save the uploaded file to.
    String savePath = @"F:\";

    // Before attempting to perform operations
    // on the file, verify that the FileUpload
    // control contains a file.
    if (FileUpload1.HasFile)
    {
      // Get the name of the file to upload.
      String fileName = FileUpload1.FileName;

      // Append the name of the file to upload to the path.
      savePath += fileName;


      // Call the SaveAs method to save the
      // uploaded file to the specified path.
      // This example does not perform all
      // the necessary error checking.
      // If a file with the same name
      // already exists in the specified path,
      // the uploaded file overwrites it.
      FileUpload1.SaveAs(savePath);
    }
    else
    {
    // Show user haven't specified any file
    }