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Displaying ad content from Respose.WriteFile()/ Response.ContentType

Displaying ad content from Respose.WriteFile()/ Response.ContentType

"How would one display any add content from a ""dynamic"" aspx page? Currently I am working on using the System.Web.HttpResponse ""Page.Response"" to write a file that is stored on a web server to a web request.

This would allow people to hit a url to the type http://www.foo.com?Image=test.jpg and have the image display in their browser. So as you may know this revolves around the use of Response.ContentType.

By using

Response.ContentType = ""application/octet-stream"";

I am able to display images of type gif/jpeg/png (all i have tested so far), bit trying to display .swf or .ico files gives me a nice little error.

using

Response.ContentType = ""application/x-shockwave-flash"";

I can get flash files to play, but then the images are messed.

So how do i easily choose the contenttype?"

Asked by: Guest | Views: 70
Total answers/comments: 4
Guest [Entry]

"This is ugly, but the best way is to look at the file and set the content type as appropriate:

switch ( fileExtension )
{
case ""pdf"": Response.ContentType = ""application/pdf""; break;
case ""swf"": Response.ContentType = ""application/x-shockwave-flash""; break;

case ""gif"": Response.ContentType = ""image/gif""; break;
case ""jpeg"": Response.ContentType = ""image/jpg""; break;
case ""jpg"": Response.ContentType = ""image/jpg""; break;
case ""png"": Response.ContentType = ""image/png""; break;

case ""mp4"": Response.ContentType = ""video/mp4""; break;
case ""mpeg"": Response.ContentType = ""video/mpeg""; break;
case ""mov"": Response.ContentType = ""video/quicktime""; break;
case ""wmv"":
case ""avi"": Response.ContentType = ""video/x-ms-wmv""; break;

//and so on

default: Response.ContentType = ""application/octet-stream""; break;
}"
Guest [Entry]

"This is part of a solution I use on a local intranet. Some of the variables you will have to collect yourself as I pull them from a database but you may pull them from somewhere else.

The only extra but I've got in there is a function called getMimeType which connects to the database and pulls back the correct mine type based on file extension. This defaults to application/octet-stream if none is found.

// Clear the response buffer incase there is anything already in it.
Response.Clear();
Response.Buffer = true;

// Read the original file from disk
FileStream myFileStream = new FileStream(sPath, FileMode.Open);
long FileSize = myFileStream.Length;
byte[] Buffer = new byte[(int)FileSize];
myFileStream.Read(Buffer, 0, (int)FileSize);
myFileStream.Close();

// Tell the browse stuff about the file
Response.AddHeader(""Content-Length"", FileSize.ToString());
Response.AddHeader(""Content-Disposition"", ""inline; filename="" + sFilename.Replace("" "",""_""));
Response.ContentType = getMimeType(sExtention, oConnection);

// Send the data to the browser
Response.BinaryWrite(Buffer);
Response.End();"
Guest [Entry]

"Yup Keith ugly but true. I ended up placing the MIME types that we would use into a database and then pull them out when I was publishing a file. I still can't believe that there is no autoritive list of types out there or that there is no mention of what is available in MSDN.

I found this site that provided some help."
Guest [Entry]

"Since .Net 4.5 one can use

MimeMapping.GetMimeMapping

It returns the MIME mapping for the specified file name.

https://docs.microsoft.com/en-us/dotnet/api/system.web.mimemapping.getmimemapping"