print crystal report

using System.IO;
private void Button1_Click(object sender, System.EventArgs e)
{
MemoryStream oStream; // using System.IO
CrystalReport1 report = new CrystalReport1();
oStream = (MemoryStream)
report.ExportToStream(
CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
Response.Clear();
Response.Buffer= true;
Response.ContentType = "application/pdf";
Response.BinaryWrite(oStream.ToArray());
Response.End();
}