Namespace: System. Configuration Assembly: System. Configuration (in System. Configuration.dll) The first example shows a simple console application that reads application settings, adds a new setting, and updates an existing setting. using System; using System. Configuration; namespace Console Application1 class Program static void Main(string[] args) Read All Settings Read Setting( Setting1 Read Setting( Not Valid Add Update App Settings( New Setting, May 7, 2014 Add Update App Settings( Setting1, May 8, 2014 Read All Settings static void Read All Settings try var app Settings = Configuration Manager. App Settings; if (app Settings. Count = 0) Console. Write Line( App Settings is empty. else foreach (var key in app Settings. All Keys) Console. Write Line( Key: 0 Value: 1, key, app Settings[key] catch ( Configuration Errors Exception) Console. Write Line( Error reading app settings static void Read Setting(string key) try var app Settings = Configuration Manager. App Settings; string result = app Settings[key]? Not Found ; Console. Write Line(result catch ( Configuration Errors Exception) Console. Write Line( Error reading app settings static void Add Update App Settings(string key, string value) try var config File = Configuration Manager. Open Exe Configuration( Configuration User Level. None var settings = config File. App Settings. Settings; if (settings[key] = null) settings. Add(key, value else settings[key]. Value = value; config File. Save( Configuration Save Mode. Modified Configuration Manager. Refresh Section(config File. App Settings. Section Information. Name catch ( Configuration Errors Exception) Console. Write Line( Error writing app settings The previous example assumes your project has an App.config file as shown below. This post relates to wider. Net app.config files and linked DLL’s, but more specifically, my instance was relating to the Revit API. For those that don’t know, an app.config file is a nice, easy way of doing configuration for your applications in.net. You can use the System. Configuration namespace to quickly access an XML config file without needing to do any manual XML reading. Unfortunately, you can only have one app.config file per executable, so if you have DLL’s linked into your application, they cannot have their own app.config files. Seeing as the Revit API is done by external. Net DLL files which are opened within the Revit environment, this applies to them as well. At Bornhorst + Ward, we have all of our external commands on a central network share, and each staff members ini is edited (using a tool I’ve written) to point to these external commands. I’d previously tried to use app.config files, and found they weren’t working, it seems they weren’t looking for the correct file in that network directory. The way around it for me, was to manually locate the app.config file in my code. 1: / 2: / Get the configuration for the supplied type 3: / 4: / type of class 5: / a configuration 6: public static System. Configuration. Configuration Get Config( Type type) 7: 8: /workout app.config lokcation 9: string dll Location = type. Assembly. Location +.config ; 10: 11: if (dll Location = null) 12: throw new Exception( Could not find config file, add.config in DLL location 13: 14: /create config 15: Exe Configuration File Map file Map = new Exe Configuration File Map 16: file Map. Exe Config Filename = dll Location; 17: System. Configuration. Configuration config = Configuration Manager. Open Mapped Exe Configuration(file Map, Configuration User Level. None 18: 19: return config; 20: Seeing as app.config.
What you are asking has been asked many times again and again. in fact you could instruct. NET to read configuration settings from another file, in your case will be something like library.dll.config, there are projects or classes to do this called something like assemblysettingsreader or similar. My suggestion is anyway to do not do it. It sounds cool initially but think in this way, your library is not running alone, can be referenced by a console app, a web site or a wpf ui project, all these clients might need to customize the configuration and have different settings so it makes full sense to have the settings related to the calling application config files.
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