Concat Web.config value and string in Image control SRC

Question

I have a web.config key :

<add key="IMGSRC" value="http://localhost" />

I want to use the value of this key along with the path of the image concatenated to in an aspx page. I'm aware that I can get to root folder by simply saying "../ImagesFolder" , but my website has parent path disabled because of security concerns. So now I need to work around it.

I need something like this (Here are a few things I tried after looking up the internet and which did not work.):

1) <img id="Img19" runat="server" alt="Admin" src='<%#ConfigurationSettings.AppSettings["IMGSCR"] %>' />

2) <img id="Img19" runat="server" alt="Admin" src='<%#ConfigurationSettings.AppSettings["IMGSCR"] + "/ImagesFolder/img.jpeg" %> ' />

3) <img id="Img19" runat="server" alt="Admin" src="<%#ConfigurationSettings.AppSettings["IMGSCR"] %> " + "/ImagesFolder/img.jpeg" />

Also I tried this: I declared a variable Path on Page_Load Path = System.Configuration.ConfigurationManager.AppSettings["RootforIMG"].ToString();

and then on aspx page I tried using it as <img id="Img19" runat="server" alt="Admin" src="<%=Path %> " + "/ImagesFolder/img.jpeg" /> but this as well is no good.

@Adriano In my case I have a lot of small images on a single page.I cannot make so many variables in codebehind by mapping each image with server.mappath(). — Pavitar
– Pavitar, Commented Sep 12, 2012 at 13:24
you do not need to create variables. Just use Server.MapPath() inside your page instead of reading path from configuration. — Adriano Repetti
– Adriano Repetti, Commented Sep 12, 2012 at 13:52

Murali Murugesan · Accepted Answer · 2012-09-12 13:25:28Z

0

Can you try something like below?

<img id="Img19" runat="server" alt="Admin" src='<%= GetImageSource()%>' />

In code behind

public string GetImageSource()
{
 return ConfigurationManager.AppSettings["IMGSCR"] + "/ImagesFolder/img.jpeg";
}

answered Sep 12, 2012 at 13:25

Murali Murugesan

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6 Comments

Murali Murugesan Over a year ago

For finding application path,use this.. public string CurrentAppPath() {return (System.Web.HttpRuntime.AppDomainAppVirtualPath == "/") ? string.Empty : System.Web.HttpRuntime.AppDomainAppVirtualPath; }

Cᴏʀʏ Over a year ago

I would pass the "/ImagesFolder/img.jpeg" into the GetImageSource() function, otherwise you're doing way too much work.

Pavitar Over a year ago

What if I have a lot of images on a single page.I will have to make that many variables in code behind.

Murali Murugesan Over a year ago

Better you call like src='<%= CurrentAppPath()+'imagefile'%>'

Pavitar Over a year ago

Both the methods tried, with <%= %> , it gives me a not "well formed" error, whereas with src='<%# CurrentAppPath()+'imagefile'%>' , it does not return a string.I mean when I view source, I see src="". Also I have a breakpoint on the method which does not get called.

|

Deependra Gupta · Accepted Answer · 2012-09-12 13:55:43Z

0

The relative path of images should work:

Relative path can be as per your page location i.e: '../IMages/img.jpg' or 'images/img.jpg'

try this :

<img id="Img19" runat="server" alt="Admin" src='ImagesFolder/img.jpeg' />

answered Sep 12, 2012 at 13:55

Deependra Gupta

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Comments

Adriano Repetti · Accepted Answer · 2012-09-27 10:02:52Z

0

For controls with runat="server" attribute you do not need any special code to map a path relative to web site root:

<img id="Img19" runat="server" alt="Admin" src"~/ImagesFolder/img.jpeg" />

The path ~/ImagesFolder/img.jpeg will be resolved replacing ~ with the root folder of your web-site.

If to resolve path you need some kind of logic (for example you need to call a function) then you can use this:

<img src'<%= ResolveImageName() %>' />

Do not forget that URL must be proper encoded.

edited Sep 27, 2012 at 10:02

answered Sep 12, 2012 at 14:08

Adriano Repetti

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