ex = {"'D:\\PipelineDashboardSource\\PipelineDashboard\\web' is not a valid virtual path."}

Posted on 2008-10-14
Last Modified: 2012-05-05
i am not getting right path for web.config file.following exception is throwing
ex = {"'D:\\PipelineDashboardSource\\PipelineDashboard\\web' is not a valid virtual path."}

following code i am using to get webconfig path:

string configPath = System.Web.HttpContext.Current.Server.MapPath(@"/web");
Question by:ajay1feb
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LVL 60

Expert Comment

by:Kevin Cross
ID: 22712127
Firstly, I think you want this:
string configPath = System.Web.HttpContext.Current.Server.MapPath("/web.config");

When you want to use this string which will then contain \, I would @ quote then but since you are using forward slash (relative path) I don't think that is necessary.
LVL 13

Expert Comment

ID: 22712236
Your code is exprecting a virtual directory path something like http://myserver/virtualdir/web.config
Server.MapPath method will give you the location of a file in the machine something like D:\myfolder\web.config

What you can do is, Get the URL of the page from current context and replace the file name with web.config if both page and web.config files are in same folder. Otherwise get the server name from current context and construct path of web.config


Author Comment

ID: 22712567
when i tried following code it is still giving same error.

string configPath = System.Web.HttpContext.Current.Server.MapPath("/web.config");

// Get the Web application configuration object.
// i am getting error on following line
Configuration config = WebConfigurationManager.OpenWebConfiguration(configPath);


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LVL 13

Expert Comment

ID: 22712777
Its giving error because you are still using Server.MapPath which will give the location of the file in the hard disk where in the application is expecting virtual path as I explained before.

Try something like this

string configPath = System.Web.HttpContext.Current.Request.Url.AbsolutePath.Replace("Home.aspx","web.config");// Server.MapPath(@"/web");
        Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(configPath);
LVL 22

Expert Comment

ID: 22713060
Try the attached code snippet..
For details:

WebConfigurationFileMap fileMap CreateFileMap();
System.Configuration.Configuration config = WebConfigurationManager.OpenMappedWebConfiguration(fileMap,"/config");

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Author Comment

ID: 22738804
dear prairiedog,

  when i am working with development server it is giving right path of web.config file but whenever i start working with iis then it is not getting web.config file which is on server, in this case it is taking machine.config file i belive.can you tell me what is code for getting web.config file on web server not on development server.

LVL 22

Accepted Solution

prairiedog earned 500 total points
ID: 22741879
Try this code snippet. It will write out the first connection string in your current web.config:
WebConfigurationFileMap fileMap = new WebConfigurationFileMap();
            string physDir = Server.MapPath(Request.ApplicationPath);
            VirtualDirectoryMapping vDirMapBase = new VirtualDirectoryMapping(physDir, true, "web.config");
            fileMap.VirtualDirectories.Add("/", vDirMapBase);
            System.Configuration.Configuration config = WebConfigurationManager.OpenMappedWebConfiguration(fileMap, "/config");
            Response.Write("Connection string: " + config.ConnectionStrings.ConnectionStrings[0]);

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