CODEWITHSUNDEEP
asp.net
user2382627
user2382627

Reputation:

asp.net - download files in specific folder

i'm trying download files that is located in specific folder. I'm using this code, but it gives me an error in Reponse.End(); -> Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack

if (m.Path.EndsWith(".txt"))
            {
                Response.ContentType = "application/txt";
            }
            else if (m.Path.EndsWith(".pdf"))
            {
                Response.ContentType = "application/pdf";
            }
            else if (m.Path.EndsWith(".docx"))
            {
                Response.ContentType = "application/docx";
            }
            else
            {
                Response.ContentType = "image/jpg";
            }
            string nameFile = m.Path;

            Response.AppendHeader("Content-Disposition", "attachment;filename=" + nameFile);

            Response.TransmitFile(Server.MapPath(ConfigurationManager.AppSettings["IMAGESPATH"]) + nameFile);
            Response.End();

I also tried Response.Write, but it gives me the same error.

Upvotes: 0

Views: 4260

Answers (1)

Antonio Bakula
Antonio Bakula

Reputation: 20693

Response.End will throw ThreadAbortException and it's there only for compatibility with old ASP and you should use HttpApplication.CompleteRequest

here is the example :

public class Handler1 : IHttpHandler
{    
  public void ProcessRequest(HttpContext context)
  {
    context.Response.AppendHeader("Content-Disposition", "attachment;filename=pic.jpg");
    context.Response.ContentType = "image/jpg";
    context.Response.TransmitFile(context.Server.MapPath("/App_Data/pic.jpg"));
    context.ApplicationInstance.CompleteRequest();
  }

  public bool IsReusable
  {
    get
    {
      return false;
    }
  }
}

Upvotes: 1

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