private static void UpdateTypeArgument(ModelItem modelItem, Int32 argumentIndex, Type newGenericType)
{
Type itemType = modelItem.ItemType;
Type[] genericTypes = itemType.GetGenericArguments();
// Replace the type being changed
genericTypes[argumentIndex] = newGenericType;
Type newType = itemType.GetGenericTypeDefinition().MakeGenericType(genericTypes);
EditingContext editingContext = modelItem.GetEditingContext();
Object instanceOfNewType = Activator.CreateInstance(newType);
ModelItem newModelItem = ModelFactory.CreateItem(editingContext, instanceOfNewType);
using (ModelEditingScope editingScope = newModelItem.BeginEdit("Change type argument"))
{
MorphHelper.MorphObject(modelItem, newModelItem);
MorphHelper.MorphProperties(modelItem, newModelItem);
if (itemType.IsSubclassOf(typeof(Activity)) && newType.IsSubclassOf(typeof(Activity)))
{
if (DisplayNameRequiresUpdate(modelItem))
{
// Update to the new display name
String newDisplayName = GetActivityDefaultName(newType);
newModelItem.Properties[DisplayName].SetValue(newDisplayName);
}
}
DesignerUpdater.UpdateModelItem(modelItem, newModelItem);
editingScope.Complete();
}
}
public static void UpdateModelItem(ModelItem originalItem, ModelItem updatedItem)
{
DesignerUpdater class2 = new DesignerUpdater(originalItem, updatedItem);
Action method = class2.UpdateDesigner;
Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Render, method);
}