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

Question

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

Answer 1

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

Answer 2

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; 
}

Answer 3

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();

Answer 4

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.