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.NET Forum / ASP.NET / General / February 2008Serving an image
Hi there, I am just wanting to simply load up an image and pass it on through the webserver.. i.e. the client would receive the file as if they'd entered the URL of a picture directly (using response-contenttype I guess), but really it's a URL to an aspx page with querystring (where I decide which image to pass on). It's for an app that only reads from web URLs but my images are on a shared folder, accessible to my webserver but not the app... if that makes sense! cheers, Chris Try for example : http://www.developerfusion.co.uk/show/5223/ An ASHX handler allows to avoid the ASP.NET page cycle that is not needed. You could use Response.WriteFile to write down the image content to the browser (the sample grabs the picture from a db). If not covered, please be more specific about the specific step on which you need help... -- Patrice > Hi there, > [quoted text clipped - 10 lines] > cheers, > Chris Hi Patrice, Thank you for that link, it certainly looks like a more streamlined solution to use the ashx handler instead. My problem now is going off at a tangent, but maybe you can help. If I use the file.OpenRead() functions, I get an UnauthorizedAccessException, however if I simply use an asp:image, with imageURL value of the same path - that works fine! Any ideas? The path is along the lines of "\\servername\share\file.jpg" and I'm using integrated windows authentication - with the authenticated user having permissions on \\servername. Thank you for your help, Chris > Try for example : > http://www.developerfusion.co.uk/show/5223/ [quoted text clipped - 23 lines] >> cheers, >> Chris I would trust the exception. Not sure what you meant exactly by having access to \\servername but are you 100 % sure the user has access to BOTH the file system location and the network share (most often I would say granting access to the network share is forgotten) ? You could perhaps try a tool such as filemon from www.sysinternals.com to track file operations failures (or ask your admin if enabling auditing could help). You could also try to create a file (and check its owner to see if impersonation is properly done as expected). -- Patrice > Hi Patrice, > [quoted text clipped - 40 lines] >>> cheers, >>> Chris Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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