How to open config file of another application

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I have an config file(.exe) present inside another folder in my application. When I run my application I want to open the file and then edit some changes inside appsetting. I am able to get the path of the .exe file using 

string directory1 = 
System.IO.Directory.GetParent(Environment.CurrentDirectory).ToString(); 
string directory2 = @"DualPort\SGPMService.UI.exe";
string path1 = Path.Combine(directory1, directory2);

Now I am unable to load the config file. I tried using xmldocument and filestream both.

XmlDocument d = new XmlDocument();
d.Load(path1);
FileStream fileStream = new FileStream(path1, FileMode.Open);

What would be the correct way to load the file and edit the changes ?

config c#-4.0 xml configuration c#
1 Answers

Use this code:

        var config = ConfigurationManager.OpenExeConfiguration("xxx.exe");
        // get value
        var item1 = config.AppSettings.Settings["akey"].Value;
        // set value
        config.AppSettings.Settings["akey"].Value = value;
        config.Save();
user_60816740
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