Question

I am writing an client application in C# which will be supposed to change ConnectionString settings in a web.config file from another application I wrote. How can I achieve this goal?

Is there a way to load the web.config file in my application and read/change its data object orientated? Or do I need to parse it as if beeing a complete ‘unknown’ XML file?

Answer 1

If you’re doing this from another application, you can use the VirtualDirectoryMapping class:

VirtualDirectoryMapping vdm = new VirtualDirectoryMapping(@'C:\Inetpub\wwwroot\YourApplication', true); WebConfigurationFileMap wcfm = new WebConfigurationFileMap(); wcfm.VirtualDirectories.Add('/', vdm);   // Get the connectionString Configuration config = WebConfigurationManager.OpenMappedWebConfiguration(wcfm, '/'); string connection = config.ConnectionStrings.ConnectionStrings['YourConnectionString'];