Developer forum

Hello,

I have coded an OrderTemplateExtender to dynamically generate a zip file and send it to the customer when he adds to basket (as per an image bank feature of our website). The code works very well and the zip file is generated and sent without problem.

However I noticed that after the download, every single page I try to access is blank. It is fixed only by deleting the ASP.NET session cookie, or have the session expire. I tried different ways to end the response but so far I haven't had any success...

Here is my code :

public class OrderTemplateExtender1 : OrderTemplateExtender
{
	public override void ExtendTemplate(Dynamicweb.Rendering.Template template)
	{
		try
		{
			if (base.Order != null
				&& base.Order.OrderLines != null
				&& base.Order.OrderLines.Count > 0
				&& RenderingState == TemplateExtenderRenderingState.Before)
			{
				/* 
					Snip : 
					1) Create a temporary folder
					2) Downloading the images into it
					3) Creating the zip file in another folder
					4) Deleting first temp folder
				*/

				HttpContext.Current.Response.Clear();
				HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment; filename=" + archiveName);
				HttpContext.Current.Response.AppendHeader("Content-Length", zipInfos.Length.ToString());
				HttpContext.Current.Response.AppendHeader("Pragma", "no-cache");
				HttpContext.Current.Response.AppendHeader("Cache-Control", "no-cache");
				HttpContext.Current.Response.ContentType = "application/x-zip-compressed";
				HttpContext.Current.Response.TransmitFile(zipPath);
			}
		}
		catch (Exception ex)
		{
			/* Log */
		}

		HttpContext.Current.Response.End();

		// Tried this instead of Response.End, but same result
		//HttpContext.Current.Response.Flush();
		//HttpContext.Current.Response.SuppressContent = true;
		//HttpContext.Current.ApplicationInstance.CompleteRequest();
	}
}

Any idea why ? Thanks a lot !