Imports System.IO
Imports C1.C1Preview
Imports C1.Web.Wijmo.Controls.C1ReportViewer

Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
　　Dim stream = New MemoryStream()

　　Dim doc As C1PrintDocument = C1ReportViewer.CreateC1PrintDocument()
　　doc.Body.Children.Add(New RenderText("Hello World!"))
　　doc.Export(stream, New C1.C1Preview.Export.PdfExportProvider())

　　context.Response.ContentType = "application/pdf"
　　context.Response.BinaryWrite(stream.ToArray())
End Sub

using System.IO;
using C1.C1Preview;
using C1.Web.Wijmo.Controls.C1ReportViewer;

public void ProcessRequest(HttpContext context)
{
　　var stream = new MemoryStream();

　　C1PrintDocument doc = C1ReportViewer.CreateC1PrintDocument();
　　doc.Body.Children.Add(new RenderText("Hello World!"));
　　doc.Export(stream, new C1.C1Preview.Export.PdfExportProvider());

　　context.Response.ContentType = "application/pdf";
　　context.Response.BinaryWrite(stream.ToArray());
}