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Posted 9 Mar 2012


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How to download a PowerPoint file using C#

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5 Sep 2012CPOL
Recently I had to write few lines of code to download ppt files from


Recently I had to write a few lines of code to download a PowerPoint presentation file from one of my ASP.NET websites. I would like to share the block of code I used for this purpose.

if (File.Exists(Server.MapPath(file)))
   Response.ContentType = "application/x-mspowerpoint";
   Response.AddHeader("Content-Disposition", "attachment; filename=" + file);

Here Response.ContentType should be set correctly. I have used  "application/x-mspowerpoint" for PowerPoint. You need to set the correct ContentType. For example, for MS Word you should set application/msword, for a GIF image you should set image/gif, for PDF you should set application/pdf, etc.

Here is the reference to set Response.ContentType :

Another important information: 

To have it work correctly in IE you need to write the code in the Page_load event. So, for this you may create a page Download.aspx and redirect to that page when you click the Download button with file information in the querystring. 

Hope it helps.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Mahmud Hasan
Software Developer (Senior)
Netherlands Netherlands
Software Engineer | Software Architect | System Designer | System Analyst | Team Leader | Consultant (.Net)

12 Years of Experience in the Industry.

Currently working as System Designer at CIMSOLUTIONS, Netherlands

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Comments and Discussions

QuestionThank Pin
gufran osource25-Jul-12 20:53
Membergufran osource25-Jul-12 20:53 
QuestionWhy is content type application/x-unknown used? Pin
pietvredeveld9-Mar-12 1:39
Memberpietvredeveld9-Mar-12 1:39 
AnswerRe: Why is content type application/x-unknown used? Pin
Mahmud Hasan9-Mar-12 2:32
MemberMahmud Hasan9-Mar-12 2:32 
AnswerRe: Why is content type application/x-unknown used? Pin
Mahmud Hasan9-Mar-12 4:45
MemberMahmud Hasan9-Mar-12 4:45 
Suggestionplease update code example Pin
pietvredeveld9-Mar-12 1:37
Memberpietvredeveld9-Mar-12 1:37 
AnswerRe: please update code example Pin
Mahmud Hasan9-Mar-12 2:33
MemberMahmud Hasan9-Mar-12 2:33 

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