Zip files in ASP.Net, .net framework 4.0 with Telerik

For .Net Framework 4.0 and bellow there is no inbuilt zipping functionality. 3rd party libraries like DotNetZip, SharpZipLib are playing a great role in this scenario. But if you already use Telerik custom controls for your other developments on a project then you can easily use Telerik ZipPackage to crate zip  files.

using Telerik.Web.Zip;
using System.IO;
.....
...
..
Private void GeneratePdfFiles()
{
...//report parameters and data source credentials

    MemoryStream memoryStream = new MemoryStream();
    ZipPackage Package = ZipPackage.Create(memoryStream);
    Stream stream = default(Stream);

    foreach(reportParameters  in reportParameterCollection)
   {
    byte[] reportByte= RenderReport(reportServerUrl, reportParameters, reportPath, dataSourceCredentials, networkCredential, "pdf");
    stream = new MemoryStream(reportByte);
    Package.AddStream(stream, string.Format("ReportName.pdf"), Telerik.Web.Zip.CompressionType.Default);
    }
SendZipToClient(memoryStream , Package);
}

private void SendZipToClient(MemoryStream memStream, ZipPackage Package)
{  
    Package.Close(false);
    memStream.Position = 0;
    if (memStream != null && memStream.Length > 0)
    {
        Response.Clear();
        Response.AddHeader("content-disposition", "attachment; filename=FormB.zip");
        Response.ContentType = "application/zip";
        Response.BufferOutput = false;   // to prevent buffering
        byte[] buffer = new byte[1024];
        int bytesRead = 0;
                while ((bytesRead = memStream.Read(buffer, 0, buffer.Length)) > 0)
                {
                    Response.OutputStream.Write(buffer, 0, bytesRead);
                }
                Response.End();
    }
}