Use Asp.net to inject javascript

Question

Hi

Im using my asp.net code behind to register some startup script.

The following code gets rendered to the browser.

var rotator = new ImageRotator('rotateImg');
rotator.AddImage('DisplayThumbnailImage.aspx?FilePath=C:\Development\Projects\TouchSA\Trunk\WebSite\Gallery\photo_4.PNG&ThumbnailWidth=535&ThumbnailHeight=316');
rotator.Rotate();

This looks right...but when the AddImage method receives the parameter, all the backslashes are gone. Why?

Answer 1

I suspect you simply need to escape the backslashes. i.e. Use \\ instead of \ in your string.

var rotator = new ImageRotator('rotateImg');
rotator.AddImage('DisplayThumbnailImage.aspx?FilePath=C:\\Development\\Projects\\TouchSA\\Trunk\\WebSite\\Gallery\\photo_4.PNG&ThumbnailWidth=535&ThumbnailHeight=316');
rotator.Rotate();

Answer 2

Answering your question without giving any remarks to the local url. ;)

To get an "\" you have to escape it... Like this

'DisplayThumbnailImage.aspx?FilePath=C:\\Development\\Projects\\TouchSA\\Trunk\\WebSite\\Gallery\\photo_4.PNG&ThumbnailWidth=535&ThumbnailHeight=316'

Answer 3

Encode your URL and you'll have no problems.

Server.UrlEncode()

To decode

Server.UrlDecode()