C#

while (!reader.EndOfStream) {
        string line = reader.ReadLine ();
        Console.WriteLine (line);

    }
}

HttpContext.Current.Response.Clear(); //clear anything in io buffer
           Response.ClearContent();
           HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=GrpFile.xls");
           HttpContext.Current.Response.Charset = "";
           HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
           StringWriter sw = new StringWriter();
           HtmlTextWriter hw = new HtmlTextWriter(sw);
           gvCampGrp.RenderControl(hw);
           HttpContext.Current.Response.Write(sw.ToString());
           HttpContext.Current.Response.End();

public override void VerifyRenderingInServerForm(Control control)
      {
          /* Confirms that an HtmlForm control is rendered for the specified ASP.NET
             server control at run time. */
          return;
      }

Johnny English wrote:

but that transparent form will recieve click events rather than desktop itself, right?

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Collections.Generic;
static class Program
{        
    public static void Main()
    {
        using (var f = new Form())
        {
            var b = new Button();
            b.Text = "Hello world";
            f.Controls.Add(b);
            
            //f.Opacity = 0;
            f.BackColor = Color.Red;
            f.TransparencyKey = Color.Red;
            f.AllowTransparency = true;
            f.WindowState = FormWindowState.Maximized;
            f.ShowDialog();
        }
    }
}

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]