Disable Url Encoding in ASP.NET MVC

Question

In my ASP.NET MVC application, there is url for example:

<img src="/photo/22316/byt+3%2b1+n.s+(16)/600x400">

which is mapped to action

public void Photo(string sid, string name, int? width, int? height)
{ 
 //read image, resize and return
}

The problem is that the string

byt+3%2b1+n.s+(16)

is automatically decoded by ASP.NET MVC as

byt+3+1+n.s+(9)

and the image cannot be found, because the name of file is

byt 3+1+n.s (9).jpg

I cannot even replace + for space, because only some of plus marks were created by encoding. I need to disable the encoding of parameter of this particular action to solve this issue.

I know that it is better to generate some IDs, but it is late know to change id, I need to preserve the url of images because of compatibility issues and google image search.

The Url routing is:

routes.MapRoute(
null,
"photo/{sid}/{name}/{width}x{height}", // URL
new { controller = "Nemovitost", action = "Foto" }
);

In watch there is:

HttpContext.Request.Url = {http://localhost:31182/photo/22316/byt+3+1+n.s+(9)/600x400}

But in fiddler I can see:

http://localhost:31182/photo/22316/byt+3%2b1+n.s+(9)/600x400

The razor template (simplified):

public static string BuildImageUrl(int realtyId, string filename, int w, int h)
{
 filename = Path.GetFileNameWithoutExtension(filename);
 return string.Format("/photo/{0}/{1}/{2}x{3}", realtyId, HttpUtility.UrlEncode(filename), w, h).ToLower();
}
var rsImgF = "<img src=\"{0}\">";
.... 
var rsImg = string.Format(rsImgF, ....,
 BuildImageUrl(Model.RealtyId, img.Filename, 600, 400));
@Html.Raw(rsImg);

• ps2goat: that's not url encoding. If you url encode the actual file name, you'd see %20 where spaces are. I think you're doing something to cause that.
• ps2goat: what's your url route definition look like?
• Tomas Kubes: please see url route in edit
• ps2goat: And we also need to see the razor code for this view, and any templates you may use.
• Tomas Kubes: please see the simplified template

Answer 1

You should be fine to remove the url encoding and just use the built in Razor Url encoding, which is applied automatically when using @:

public static string BuildImageUrl(int realtyId, string filename, int w, int h)
{
 filename = Path.GetFileNameWithoutExtension(filename);
 // no url encoding here!
 return string.Format("/photo/{0}/{1}/{2}x{3}", realtyId, filename, w, h).ToLower();
}
var rsImgF = "<img src=\"{0}\">";
.... 
var rsImg = string.Format(rsImgF, ....,
 BuildImageUrl(Model.RealtyId, img.Filename, 600, 400));
@rsImg;

• Tomas Kubes: I cannot use @rsImg because of HTML tags in rsImg string, but it works even with @Html.Raw(rsImg). Thanks