patterns & practices – Enterprise Library

Hello, I started playing with the Entlib's Environment Overrides feature a few days ago, but I can't get the configuration merging to work. I made a simple example, I set a property named NumberOfChannels in the AppSettings section, created a Production environment an then override the value of the property for that envoronment.

Here is my App.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=2.9.9.2, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
  </configSections>
  <appSettings>
    <add key="NumberOfChannels" value="3" />
  </appSettings>
</configuration>

This is the production environment delta file:

<configuration>
    <configSections>
        <section name="EnvironmentMergeData" type="Microsoft.Practices.EnterpriseLibrary.Configuration.EnvironmentalOverrides.Configuration.EnvironmentMergeSection, Microsoft.Practices.EnterpriseLibrary.Configuration.EnvironmentalOverrides, Version=2.9.9.2, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
    </configSections>
    <EnvironmentMergeData environmentName="Production" environmentDeltaFile="Production.config">
        <mergeElements>
            <override nodePath="vironmentoverridestest\app.config/Application Settings/NumberOfChannels"
                overrideProperties="true">
                <overridddenProperties>
                    <add name="Value" value="50" />
                </overridddenProperties>
            </override>
        </mergeElements>
    </EnvironmentMergeData>
</configuration>

Finally, this is the merged Configuration.config file, which I obtained through the "Save Merged Configuration" context menu item in the Entlib configuration editor:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=2.9.9.2, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
  </configSections>
  <appSettings>
    <add key="NumberOfChannels" value="3" />
  </appSettings>
</configuration>

As can be seen, the NumberOfChannels property is still 3 in the merged file, instead of 50 as expected.

Hope anyone can help. Thanks,

Sole