writing to a config file

Question

Hello,

I copied this code from MS web site trying to add a new key to current config file, but it does not save the config file at all when my app exits, any idea?

    // Open App.Config of executable
                System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

                config.AppSettings.Settings.Add("TestKey", "gdhgasdkjadhsj");
                // Save the configuration file.
                config.Save(ConfigurationSaveMode.Full);

How could this code have no exceptions whatsoever but just not doing what Microsoft claim it should do -- save the damn config file?

Guest User · Answer

This MSDN example worked for me: using System; using System.Collections.Specialized; using System.Collections.ObjectModel; using System.Collections; using System.Text; using System.Configuration; namespace ConsoleApplication2 { class Program { static void Main(string[] args) { System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration( ConfigurationUserLevel.None); // Add an entry to appSettings. int appStgCnt = ConfigurationManager.AppSettings.Count; string newKey = "NewKey" + appStgCnt.ToString(); string newValue = DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToLongTimeString(); config.AppSettings.Settings.Add(newKey, newValue); // Save the configuration file. config.Save(ConfigurationSaveMode.Modified); // Force a reload of the changed section. ConfigurationManager.RefreshSection("appSettings"); } } } Since the app is named "ConsoleApplication2.exe", the config file that it's saving to is "ConsoleApplication2.exe.Config", not "App.config".

writing to a config file

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