Web.Config Modification not removing

Question

I'm using the code below to add and remove a web.config change when my solution is being installed and uninstalled. The addition is working perfectly, however, the removal (although updating the web.config) isn't removing the line.

Can some please proof this code.

SPWebConfigModification webMod = null;

    public override void FeatureInstalled(SPFeatureReceiverProperties properties)
    {

        LoadModification();

        SPWebApplication webApp = SPWebApplication.Lookup(new Uri("http://sharepointdev/"));
        webApp.WebConfigModifications.Add(webMod);
        webApp.Update();
        webApp.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();

    }


    public override void FeatureUninstalling(SPFeatureReceiverProperties properties)
    {

        LoadModification();

        SPWebApplication webApp = SPWebApplication.Lookup(new Uri("http://sharepointdev/"));
        webApp.WebConfigModifications.Remove(webMod);
        webApp.Update();
        webApp.Farm.Services.GetValue<SPWebService>().ApplyWebConfigModifications();

    }

    void LoadModification()
    {
        webMod = new SPWebConfigModification();
        webMod.Path = "configuration/system.webServer/modules";
        webMod.Name = "add [@name='PageNotFoundModule'][@preCondition='integratedMode'][@type='PageNotFoundManager.PageNotFoundModule, PageNotFoundManager, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c0aac803e4855c6f']";
        webMod.Sequence = 0;
        webMod.Owner = "PageNotFoundManager";
        webMod.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;
        webMod.Value = "<add name='PageNotFoundManager' preCondition='integratedMode' type='PageNotFoundManager.PageNotFoundModule, PageNotFoundManager, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c0aac803e4855c6f' />";
    }

Answer 1

Have you figured out yet? It sounds like it is not removing the modification because you constructed the SPWebConfigModification object yourself.

Try looping through the webApp.WebConfigModifications collection and find your modification (using owner and other attributes) and then call the remove() method.

Answer 2

I have managed to solve the issue. The name in the Name and Value properties where different.

Changing the names to match has solved this issue.