'Config files for

I am working on some legacy code in .Net Framework 4.7.1 and trying to access app settings from MyActivity.dll.config. Said dll is being referenced and utilized by a Microsoft Workflow Foundations xaml file. When that code below is executed, it returns an empty string.

var string = ConfigurationManager.AppSettings["SMTPServer"]

I did some logging to a text file and verified it is coming back blank. I also checked for the presence of said config file being in the same directory as MyActivity.dll. Lastly, I checked and logged within the code the path of the assembly and it was in a weird place (C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\7d28ecb5\9e49f345\assembly\dl3\1e60f07b\5ff4cf31_9738d801\MyActivity.dll). For grins, I also placed a copy of the config file in there and nothing different happened. Below is a snippet of the config file.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <appSettings>
    <add key="SMTPServer" value="smtp.office365.com"/>
  </appSettings>
</configuration>

Anyone have any clue as to what may resolve this. Much thanks in advance!

c++sharp.netconfigworkflow-foundation


Solution 1:[1]

Please check the example i have created. My application name is ConsolApp2.

I have added configuration in the app.config file

<configuration>
<startup> 
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
</startup>  
<appSettings>
    <add key="SMTPServer" value="smtp.office365.com"/>
</appSettings>
</configuration>

After compile I got this in the ConsoleApp2.exe.config file

And for the getting this string you have to use using System.Configuration;

and with the code below you will get the configuration string

static void Main(string[] args)
    {
        string SMTPserver = ConfigurationManager.AppSettings["SMTPServer"];
    }

Thanks

Solution 2:[2]

I found the issue. This Workflow was being used by a 3rd party web app and the keys needed to belong in the web.config file. Hat tip to Paul Sinnema for pointing me in the right direction!

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Chintan Padh
Solution 2 Scott Chappa

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