Use regular expressions to save time.

Replace in files...

Utils.GetConfigValue\({"[a-zA-Z0-9_ ]+"}\)

to

System.Configuration.ConfigurationManager.ConnectionStrings\[\1\]

Sorting entries in config appsettings.

   How to sort AppSettings without manually missing any keys or important information.

Code Snippet

1.   private void WriteAppSettingsToFile(string filename)
2.     {
3.  
4.         List<string> lstConfigKeys = new List<string>();
5.         foreach (string appKey in ConfigurationManager.AppSettings.AllKeys)
6.         {
7.             lstConfigKeys.Add(appKey);
8.         }
9.  
10.         lstConfigKeys.Sort();
12.  
13.         using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\" + filename + ".txt"))
14.         {
15.             foreach (string key in lstConfigKeys)
16.             {
17.                 file.WriteLine(string.Format("'{0}', -- {1}", key, ConfigurationManager.AppSettings.Get(key)));
18.             }
19.         }
20.     }

You can modify the code to write the keys in the form of   . Then copy and paste the output to your actual config file. You have all the keys in sorted order.