I have to display pdf in ifram using response.outputstream.write(bytes, 0, filesize);

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I can get pdf to browser , i want it in iframe with out using generic handler

C#

byte[] bytes = (byte[])GetData("SELECT   * FROM [CME_Attachment] where ID = '" + ActID + "'").Rows[0]["Attachment"];

              string name = name.pdf;
              int FileSize = Convert.ToInt32(ddd.Rows[0][4].ToString());
              Response.AddHeader("Content-type", "application/pdf");
              Response.AddHeader("Content-   Disposition", "attachment; filename=" + name);
              Response.OutputStream.Write(bytes, 0, FileSize);
              Response.Flush();
              Response.End();


              iframepdf.Attributes["src"] = ;

What I have tried:

byte[] bytes = (byte[])GetData("SELECT [A_id],[Attachment],[A_name],[A_Ext],[A_size] ,[A_ActivityID],[A_type]" +
              " FROM [CME_Attachment] where A_ActivityID = '" + ActID + "' and A_type = '" + AttID + "'").Rows[0]["Attachment"];

              string name = ddd.Rows[0][2].ToString();
              int FileSize = Convert.ToInt32(ddd.Rows[0][4].ToString());
              //int FileSize = Convert.ToInt32(row["A_size"].ToString());

              Response.AddHeader("Content-type", "application/pdf");
              Response.AddHeader("Content-   Disposition", "attachment; filename=" + name);
              Response.OutputStream.Write(bytes, 0, FileSize);
              Response.Flush();
              Response.End();
              iframepdf.Attributes["src"]

Posted 7-Mar-17 1:37am

$ultaNn

Updated 7-Mar-17 3:02am

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Richard Deeming 7-Mar-17 8:37am

Your code is vulnerable to SQL Injection[^]. NEVER use string concatenation to build a SQL query. ALWAYS use a parameterized query.

Everything you wanted to know about SQL injection (but were afraid to ask) | Troy Hunt[^]
How can I explain SQL injection without technical jargon? | Information Security Stack Exchange[^]
Query Parameterization Cheat Sheet | OWASP[^]

Richard Deeming 7-Mar-17 8:38am

And if you want to display a file that's stored in the database, then you have to use a generic handler.

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F-ES Sitecore · Answer 1 · 2017-03-07T03:02:00

You can't send html that contains an iframe and also the content of the iframe in a single response, you need to split this into two requests. You'll need your original page to render out an iframe whose src element points to a page that only returns the PDF, ie all of your Response.* lines. You'll probably need to add the params you need to generate the file on the querystring so you can read them as you're doing now, however note that anyone can view or modify those params so don't do that if they are sensitive in nature or if you want the file access to be short-lived.

The page that returns the pdf doesn't have to be a handler, it can be an aspx page (but you'll need to add a response.clear before you start to write the PDF) but there's no reason for it not to be, it makes your life easier and you have to add a new file to your project anyway.