asp.net - web.config and app.config confusion

Question

I have a DLL that references a web service.

The block it has put into the app.config is (I have changed the names but you'll get the idea):

<applicationSettings>
    <DLLName.My.MySettings>
        <setting name="DLLName_WebReferenceName_ASMXName"
            serializeAs="String">
            <value>http://URL/Filename.asmx</value>
        </setting>
    </DLLName.My.MySettings>
</applicationSettings>

My website references this DLL.

The question is, what do I add to the web.config to override the above setting (alternativly, do I just put the app.config in the BIN directory)?

I need to be able to override the URL for the webservice on the production server because it can't reach the URL specified in the app.config (that is a different issue we wont go into).

Answer 1

Create a new sectionGroup in configSections called applicationSettings and paste your app.config configuration into web.config as shown below and then you can override your app.config settings.

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
        <sectionGroup name="applicationSettings" 
                type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
            <section name="Playground.ConfigurationOverride.DataAccess.Properties.Settings" 
                    type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" 
                    requirePermission="false" />
        </sectionGroup>
    </configSections>
    <applicationSettings>
        <Playground.ConfigurationOverride.DataAccess.Properties.Settings>
            <setting name="MySetting" serializeAs="String">
                <value>Setting in DataAccess</value>
            </setting>
        </Playground.ConfigurationOverride.DataAccess.Properties.Settings>
    </applicationSettings>
</configuration>