Web.config nested lists - c#-4.0

Question

I would like to use nested list in my web.config. I see pieces of code that work, but not mine, i have an error when i try to read the configuration section :
System.Configuration.ConfigurationErrorsException : Élément non
reconnu IsochroneServicesTestImbrique'.
My config :
<IsochroneServicesTest>
<add name="TC">
<IsochroneServicesTestImbrique>
<add name="DEFAULT" path="success"/>
</IsochroneServicesTestImbrique>
</add>
</IsochroneServicesTest>
and the code :
[ConfigurationProperty("IsochroneServicesTest")]
[ConfigurationCollection(typeof(CollectionIsochrone), AddItemName = "add")]
public CollectionIsochroneType IsochroneServicesTest
{
get { return (CollectionIsochroneType)this["IsochroneServicesTest"]; }
set { this["IsochroneServicesTest"] = value; }
}
public class CollectionIsochroneType : ConfigurationElementCollection
{
public void Add(ProviderElement element)
{
base.BaseAdd(element);
}
protected override ConfigurationElement CreateNewElement()
{
return new IsochroneElement();
}
protected override object GetElementKey(ConfigurationElement element)
{
return ((IsochroneTypeElement)element).Name;
}
public IsochroneTypeElement this[int index]
{
get { return (IsochroneTypeElement)BaseGet(index); }
set
{
if (BaseGet(index) != null)
{
BaseRemoveAt(index);
}
BaseAdd(index, value);
}
}
public new IsochroneTypeElement this[string Name]
{
get { return (IsochroneTypeElement)BaseGet(Name); }
}
public int IndexOf(IsochroneTypeElement element)
{
return BaseIndexOf(element);
}
protected override void BaseAdd(ConfigurationElement element)
{
BaseAdd(element, false);
}
}
public class IsochroneTypeElement : ConfigurationElement
{
[ConfigurationProperty("name", IsRequired = true)]
public string Name
{
get { return (string)this["name"]; }
set { this["name"] = value; }
}
[ConfigurationProperty("IsochroneServicesTestImbrique", IsRequired = true)]
[ConfigurationCollection(typeof(CollectionIsochrone), AddItemName = "add")]
public CollectionIsochrone IsochroneServicesImbrique
{
get { return (CollectionIsochrone)this["IsochroneServicesTestImbrique"]; }
set { this["IsochroneServicesTestImbrique"] = value; }
}
}
public class CollectionIsochrone : ConfigurationElementCollection
{
public void Add(ProviderElement element)
{
base.BaseAdd(element);
}
protected override ConfigurationElement CreateNewElement()
{
return new IsochroneElement();
}
protected override object GetElementKey(ConfigurationElement element)
{
return ((IsochroneElement)element).Name;
}
public IsochroneElement this[int index]
{
get { return (IsochroneElement)BaseGet(index); }
set
{
if (BaseGet(index) != null)
{
BaseRemoveAt(index);
}
BaseAdd(index, value);
}
}
public new IsochroneElement this[string Name]
{
get { return (IsochroneElement)BaseGet(Name); }
}
public int IndexOf(IsochroneElement element)
{
return BaseIndexOf(element);
}
protected override void BaseAdd(ConfigurationElement element)
{
BaseAdd(element, false);
}
}
public class IsochroneElement : ConfigurationElement
{
[ConfigurationProperty("name", IsRequired = true)]
public string Name
{
get { return (string)this["name"]; }
set { this["name"] = value; }
}
[ConfigurationProperty("path", IsRequired = true)]
public string Path
{
get { return (string)this["path"]; }
set { this["path"] = value; }
}
}
Thanks for your help

Answer 1

You are getting that error because you are missing the declaration for IsochroneServicesTestImbrique in your <configSections> section. Also, at least one class must inherit from ConfigurationSection. See the example here.