public override object ProvideValue(IServiceProvider serviceProvider)
{
var genericType = Type.GetType(TypeName);
var typeArgumentArray = new Type[TypeArguments.Count];
TypeArguments.CopyTo(typeArgumentArray, 0);
var concreteType = genericType.MakeGenericType(typeArgumentArray);
return(concreteType);
}
/// <summary>
/// ProvideValue, which returns the concrete object of the generic type</summary>
/// <param name="serviceProvider">The service provider</param>
/// <returns>The instance of the type</returns>
public override object ProvideValue(IServiceProvider serviceProvider)
{
string[] baseTypeArray = _typeName.Split(':');
var namespaceResolver =
serviceProvider.GetService(typeof(IXamlTypeResolver)) as System.Xaml.IXamlNamespaceResolver;
if (namespaceResolver == null)
{
throw new Exception("The Generic markup extension requires an IXamlNamespaceResolver service provider");
}
var schemaContextProvider =
serviceProvider.GetService(typeof(System.Xaml.IXamlSchemaContextProvider)) as System.Xaml.IXamlSchemaContextProvider;
if (schemaContextProvider == null)
{
throw new Exception("The Generic markup extension requires an IXamlSchemaContextProvider service provider");
}
var xamlNamespace = namespaceResolver.GetNamespace(baseTypeArray[0]);
string name = baseTypeArray[1] + "`" + TypeArguments.Count.ToString();
var xamlTypeName = new System.Xaml.Schema.XamlTypeName(xamlNamespace, name);
var xamlType = schemaContextProvider.SchemaContext.GetXamlType(xamlTypeName);
if (xamlType == null)
{
throw new Exception("The type could not be resolved");
}
Type genericType = xamlType.UnderlyingType;
// Get an array of the type arguments
Type[] typeArgumentArray = new Type[TypeArguments.Count];
TypeArguments.CopyTo(typeArgumentArray, 0);
// Create the concrete type, e.g. Collection<String>
var concreteType = genericType.MakeGenericType(typeArgumentArray);
// Create an instance of that type
return(Activator.CreateInstance(concreteType));
}
// ProvideValue, which returns the concrete object of the generic type
public override object ProvideValue(IServiceProvider serviceProvider)
{
var xamlTypeResolver = serviceProvider.GetService(typeof(IXamlTypeResolver)) as IXamlTypeResolver;
if (xamlTypeResolver == null)
{
throw new ArgumentException("xamlTypeResolver");
}
// Get e.g. "Collection`1" type
var genericType = xamlTypeResolver.Resolve(string.Format("{0}`{1}", TypeName, TypeArguments.Count));
// Get an array of the type arguments
var typeArgumentArray = new Type[TypeArguments.Count];
TypeArguments.CopyTo(typeArgumentArray, 0);
// Create the conrete type, e.g. Collection<String>
var concreteType = genericType.MakeGenericType(typeArgumentArray);
// Create an instance of that type
return(Activator.CreateInstance(concreteType));
}
