C#: How to display a PDF in a new Browser?

Question

Hi Teams,

 

I'm here again to ask a question about my project.

I have a class where the PDF will be displayed:

public class FileDownload : IHttpHandler, System.Web.SessionState.IRequiresSessionState

{

bool IHttpHandler.IsReusable => true;

public void ProcessRequest(HttpContext context)

{

var path = context.Request.QueryString["path"];

//if(File.Exists(path + "\\PDF"))

if (File.Exists(path))

{

try

{

string filePath = path;

var file = Path.GetFileName(filePath);

context.Response.Clear();

context.Response.ContentType = "application/pdf";

context.Response.AddHeader("Content-Disposition", "attachment; filename=" + file);

context.Response.TransmitFile(filePath);

context.Response.Flush();

}

catch { }

}

}

}

 

and in JavaScript I have the corresponding Event Handler "window.open()" so that a new tab will be opened after I click the button to see the pdf:

 

window.open("FileDownload.ashx?path=" + response.d, "\\PDF", "_blank");

 

I have a problem with that, because when I click the button, the new window will be opened but: 1) the browser adress stays empty and

2) the pdf will be only downloaded

3) I first have to click on the pdf so that I can see the content of the pdf

 

 My goal is to open the PDF directly in the new browser (with ist address/url).

Does it depend on the TransmitFile() in C#?

 

I really hope you can help me.

Many Thanks

Best regards