I have a custom configuration section and i want to generate an xsd scheme using the xsd tool, however i get the following error :
Microsoft (R) Xml Schemas/DataTypes support utility
[Microsoft (R) .NET Framework, Version 4.0.30319.1]
Copyright (C) Microsoft Corporation. All rights reserved.
Error: There was an error processing 'C:\Development\XXX Application Framewo
rk\XXX.AppFramework\bin\Debug\XXX.AppFramework.dll'.
- There was an error reflecting type 'XXX.AppFramework.Configuration.AppFr
ameworkEnvironmentConfiguration'.
- You must implement a default accessor on System.Configuration.ConfigurationL
ockCollection because it inherits from ICollection.
However i do not implement ICollection on my section, it looks like this :
public class AppFrameworkEnvironmentConfiguration : ConfigurationElement
{
[ConfigurationProperty("Name")]
public string Name
{
get { return (string)this["Name"]; }
set { this["Name"] = value; }
}
[ConfigurationProperty("Description")]
public string Description
{
get { return (string)this["Description"]; }
set { this["Description"] = value; }
}
[ConfigurationProperty("ApplicationName")]
public string ApplicationName
{
get { return (string)this["ApplicationName"]; }
set { this["ApplicationName"] = value; }
}
[ConfigurationProperty("DeploymentMode",DefaultValue=DeploymentMode.Local)]
public DeploymentMode DeploymentMode
{
get { return (DeploymentMode)this["DeploymentMode"]; }
set { this["DeploymentMode"] = value; }
}
}
It doesnt look like ConfigurationElement implements ICollection so im not sure why i am getting this error ?
Having had a deep look through reflector to find when this error is thrown, im even more perplexed, first off my little test does indeed evaluate to false :
bool test = typeof(ICollection).IsAssignableFrom(typeof (XXX.AppFramework.Configuration.AppFrameworkEnvironmentConfiguration));
In reflector the only place i can find it raise that exception is wrapped in this exact test, i have found it in System.Xml.Reflection.TypeScope.ImportTypeDesc and looks like this :
else if (typeof(ICollection).IsAssignableFrom(type))
{
root = TypeKind.Collection;
elementType = GetCollectionElementType(type, (memberInfo == null) ? null : (memberInfo.DeclaringType.FullName + "." + memberInfo.Name));
none |= GetConstructorFlags(type, ref exception);
}
and then
private static Type GetCollectionElementType(Type type, string memberInfo)
{
return GetDefaultIndexer(type, memberInfo).PropertyType;
}
which calls
internal static PropertyInfo GetDefaultIndexer(Type type, string memberInfo)
{
if (typeof(IDictionary).IsAssignableFrom(type))
{
if (memberInfo == null)
{
throw new NotSupportedException(Res.GetString("XmlUnsupportedIDictionary", new object[] { type.FullName }));
}
throw new NotSupportedException(Res.GetString("XmlUnsupportedIDictionaryDetails", new object[] { memberInfo, type.FullName }));
}
MemberInfo[] defaultMembers = type.GetDefaultMembers();
PropertyInfo info = null;
if ((defaultMembers != null) && (defaultMembers.Length > 0))
{
for (Type type2 = type; type2 != null; type2 = type2.BaseType)
{
for (int i = 0; i < defaultMembers.Length; i++)
{
if (defaultMembers[i] is PropertyInfo)
{
PropertyInfo info2 = (PropertyInfo) defaultMembers[i];
if ((info2.DeclaringType == type2) && info2.CanRead)
{
ParameterInfo[] parameters = info2.GetGetMethod().GetParameters();
if ((parameters.Length == 1) && (parameters[0].ParameterType == typeof(int)))
{
info = info2;
break;
}
}
}
}
if (info != null)
{
break;
}
}
}
if (info == null)
{
throw new InvalidOperationException(Res.GetString("XmlNoDefaultAccessors", new object[] { type.FullName })); **< HERE IS THE ERROR**
}
if (type.GetMethod("Add", new Type[] { info.PropertyType }) == null)
{
throw new InvalidOperationException(Res.GetString("XmlNoAddMethod", new object[] { type.FullName, info.PropertyType, "ICollection" }));
}
return info;
}
I also tried adding a default parameterless constructor, no different ;-( Any ideas ?
