Gong WPF: Default functionality when implementing IDropBehavior - wpf

I'm using Gong WPF to drag and drop a ListView with an ObservableCollection() as the ItemSource and the default behavior works great.
I recently added grouping to the listview and found that the default behaviors can't d&d between groups. I also need to override behavior so that the group is updated when dropping into a new group in the list.
So I implemented IDropBehavior and the two handlers and I can intercept the events as expected, but now the default d&d behavior of the automatic list move operations no longer works at all - within the same group or across groups.
Code is this:
public class RequestListModel : IDropTarget {
public void DragOver(IDropInfo dropInfo)
{
dropInfo.Effects = DragDropEffects.Move;
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
//dropInfo.NotHandled = true;
}
public void Drop(IDropInfo dropInfo)
{
var item = dropInfo.TargetItem as HttpRequestData;
if (item == null) return;
var source = dropInfo.Data as HttpRequestData;
if (source == null) return;
if (source.Group != item.Group)
{
source.Group = item.Group;
source.RequestContent = source.ToRequestHttpHeader(true, true, true, StressTester.Options.SiteBaseUrl);
GroupRefresh();
}
//dropInfo.NotHandled = true;
}
}
Is it possible to override IDropTarget and still get the default behavior that automatically moves items, or is it now necessary to explicitly move the items in the collection manually? I was hoping the droptInfo.NotHandled switch might help but that seems to have no effect set either way...
--- updated
It's simple enough to do the collection updates manually since Gong conveniently provides the drop index. So it's easy to:
remove the source item
re-insert at the drop location
In the Drop() method above this works:
AppModel.Requests.Remove(source);
var idx = dropInfo.InsertIndex;
if (idx < AppModel.Requests.Count)
AppModel.Requests.Insert(dropInfo.InsertIndex, source);
else
AppModel.Requests.Add(source);
Easy as that is, it still seems like the default behavior (which appears to do roughly this) should still be available in some way without manually shifting items around.

Related

Pattern for binding commands on a child ViewModel from a parent menu

I'm creating a WPF MVVM app using Caliburn Micro. I have a set of buttons in a menu (Ribbon) that live in the view for my shell view model, which is a ScreenConductor. Based on the currently active Screen view model, I would like to have the ribbon buttons be disabled/enabled if they are available for use with the active Screen, and call actions or commands on the active Screen.
This seems like a common scenario. Is there a pattern for creating this behavior?
Why don't you do the reverse thing, instead of checking which commands are supported by the current active screen, let the active screen populate the menu or ribbon tab with all the controls that it supports, (i would let it inject its own user control which might just be a complete menu or a ribbon tab all by itself), this will also enhance the user experience as it will only show the user the controls that he can work with for the current active screen.
EDIT: Just looking at your question again and I'm thinking that this is much simpler than it looks
The only issue I can see you having is that a lack of a handler (and guard) method on a child VM will mean that buttons that don't have an implementation on the currently active VM will still be enabled.
The default strategy for CM is to try and find a matching method name (after parsing the action text) and if one is not found, to leave the button alone. If you were to customise that behaviour so that the default is for buttons to be disabled, you could easily get it working by just implementing the command buttons in your shell, making sure to set the command target to the active item:
In the shell define your buttons, making sure they have a target that points to the active child VM
<Button cal:Message.Attach="Command1" cal:Action.TargetWithoutContext="{Binding ActiveItem}" />
Then just implement the method in your child VM as per usual
public void Command1() { }
and optionally a CanXX guard
public bool CanCommand1
{
get
{
if(someCondition) return false;
return true;
}
}
Assuming you don't get much more complex than this, it should work for you
I'm going to have a quick look at the CM source and see if I can come up with something that works for this
EDIT:
Ok you can customise the ActionMessage.ApplyAvailabilityEffect func to get the effect you want - in your bootstrapper.Configure() method (or somewhere at startup) use:
ActionMessage.ApplyAvailabilityEffect = context =>
{
var source = context.Source;
if (ConventionManager.HasBinding(source, UIElement.IsEnabledProperty))
{
return source.IsEnabled;
}
if (context.CanExecute != null)
{
source.IsEnabled = context.CanExecute();
}
// Added these 3 lines to get the effect you want
else if (context.Target == null)
{
source.IsEnabled = false;
}
// EDIT: Bugfix - need this to ensure the button is activated if it has a target but no guard
else
{
source.IsEnabled = true;
}
return source.IsEnabled;
};
This seems to work for me - there is no target for methods which couldn't be bound to a command, so in that case I just set IsEnabled to false. This activates buttons only when a method with a matching signature is found on the active child VM - obviously give it a good test before you use it :)
Create methods and accompanying boolean properties for each of your commands on your shell view model. (See code below for an example.) Caliburn.Micro's conventions will wire them up to the buttons for you automatically. Then simply raise property changed events for the boolean properties when you change views to have them be re-evaluated.
For example, let's say you have a Save button. The name of that button in your xaml would be Save, and in your view model, you would have a Save method along with a CanSave boolean property. See below:
public void Save()
{
var viewModelWithSave = ActiveItem as ISave;
if (viewModelWithSave != null) viewModelWithSave.Save();
}
public bool CanSave { get { return ActivateItem is ISave; } }
Then, in your conductor, whenever you change your active screen, you would call NotifyOfPropertyChange(() => CanSave);. Doing this will cause your button to be disabled or enabled depending upon if the active screen is capable of dealing with that command. In this example, if the active screen doesn't implement ISave, then the Save button would be disabled.
I would use the Caliburn.Micro event aggregation in this scenario, as follows:
Create a class named ScreenCapabilities with a bunch of Boolean attributes (e.g. CanSave, CanLoad, etc.)
Create a message named ScreenActivatedMessage with a property of type ScreenCapabilities
Create a view model for your ribbon that subscribes to (handles) the ScreenActivatedMessage
In the ribbon view model's Handle method, set the local CanXXX properties based on the supplied ScreenCapabilities.
It would look something like this (code typed by hand, not tested):
public class ScreenCapabilities
{
public bool CanSave { get; set; }
// ...
}
public class ScreenActivatedMessage
{
public ScreenCapabilities ScreenCapabilities { get; set; }
// ...
}
public class RibbonViewModel : PropertyChangedBase, IHandle<ScreenActivatedMessage>
{
private bool _canSave;
public bool CanSave
{
get { return _canSave; }
set { _canSave = value; NotifyPropertyChanged(() => CanSave); }
}
// ...
public void Handle(ScreenActivatedMessage message)
{
CanSave = message.ScreenCapabilities.CanSave;
// ...
}
}
Then, somewhere appropriate, when the screen changes, publish the message. See see Caliburn.Micro wiki for more info.
Define a property (let's say ActiveScreen) for the active screen in the shell view model.
And let's assume you have properties for the each button such as DeleteButton, AddButton.
Screen is a viewmodel for the screens.
private Screen activeScreen;
public Screen ActiveScreen
{
get
{
return activeScreen;
}
set
{
activeScreen= value;
if (activeScreen.Name.equals("Screen1"))
{
this.AddButton.IsEnabled = true;
this.DeleteButton.IsEnabled = false;
}
if else (activeScreen.Name.equals("Screen2"))
{
this.AddButton.IsEnabled = true;
this.DeleteButton.IsEnabled = true;
}
NotifyPropertyChanged("ActiveScreen");
}
}

multiple views of an observablecollection filtered by element data

I am building a WPF application that takes in rows of data, and outputs them into different tabs in the GUI based on the data contained in the row. However, the tabs aren't known until runtime, so I need to dynamically build an unknown number of tabs with collection views with different filters off of my main ObservableCollection.
The problem I have been running in to is that using ListCollectionViews I need a predicate filter but I do not know of a way to have a dynamic predicate based on a local variable? I tried variable capturing, but that just changes all of my filters each time a new tab is added.
//class variables
string currTab;
public ObservableCollection<MyData> myCollection = new ObservableCollection<myData>();
private void DataAdd(object sender, RoutedEventArgs e)
{
currTab = inputData.ToString();
ListCollectionView c = new ListCollectionView(myCollection);
c.Filter = new Predicate<object>(MyFilter);
}
public bool MyFilter(object foo)
{
if (foo).ToString() != currTab)
return false;
else
return true;
}
I also tried using lambda expressions and with ICollectionView, but the collection doesn't update with new values, so I just see empty tabs.
CollectionView c = new CollectionViewSource { Source = myCollection.Where(z => z.ToString() == tabName) }.View;
Is there a way to make either of these approaches work? Or a better way to do this?
it turns out I just needed to use a local variable for the predicate
var b = currTab
c.Filter = (foo) =>{return foo.ToString() == b;};

Navigation from user control in win 7 phone

I am not able to call the navigation service from the user control.
even when I create one event handler on the main page to call the navigation service that is laos not working.
Can you please help me?
I think I see the problem, but like Austin indicated, there isn't much to go on in your initial description. It sounds like you are trying to access the NavgationService (which is a PhoneApplicationPage property) from within a UserControl that you are placing on that page.
As with many things in these APIs, you have a couple of options. First, you can access the PhoneApplicationFrame (which contains your pages and manages navigation) and use it for navigation:
var frame = App.Current.RootVisual as PhoneApplicationFrame;
frame.Navigate(new Uri("/TargetPage.xaml", UriKind.Relative));
Alternatively, you can walk the control's Visual Tree using the VisualTreeHelper until you get to the containing page:
var page = GetParentOfType<PhoneApplicationPage>(this); // this is your user control
private static T GetParentOfType<T>(DependencyObject item) where T : DependencyObject
{
if (item == null) throw new ArgumentNullException("item");
T result;
var parent = VisualTreeHelper.GetParent(item);
if (parent == null) return null;
else if (parent.GetType().IsSubclassOf(typeof(T))
{
result = (T)parent;
}
else result = GetParameterOfType<T>(parent);
return result;
}
As you see, the VisualTree approach involves more code, but gets you the containing page object, where you have more access to things like NavigationContext, etc.
Hope that was your question (and your answer.)

How to use a factory for DataGrid.CanUserAddRows = true

I would like to use the DataGrid.CanUserAddRows = true feature. Unfortunately, it seems to work only with concrete classes which have a default constructor. My collection of business objects doesn't provide a default constructor.
I'm looking for a way to register a factory that knows how to create the objects for the DataGrid. I had a look at the DataGrid and the ListCollectionView but none of them seems to support my scenario.
The problem:
"I'm looking for a way to register a factory that knows how to create the objects for the DataGrid". (Because my collection of business objects doesn't provide a default constructor.)
The symptoms:
If we set DataGrid.CanUserAddRows = true and then bind a collection of items to the DataGrid where the item doesn't have a default constructor, then the DataGrid doesn't show a 'new item row'.
The causes:
When a collection of items is bound to any WPF ItemControl, WPF wraps the collection in either:
a BindingListCollectionView when the collection being bound is a BindingList<T>. BindingListCollectionView implements IEditableCollectionView but doesn't implement IEditableCollectionViewAddNewItem.
a ListCollectionView when the collection being bound is any other collection. ListCollectionView implements IEditableCollectionViewAddNewItem (and hence IEditableCollectionView).
For option 2) the DataGrid delegates creation of new items to the ListCollectionView. ListCollectionView internally tests for the existence of a default constructor and disables AddNew if one doesn't exist. Here's the relevant code from ListCollectionView using DotPeek.
public bool CanAddNewItem (method from IEditableCollectionView)
{
get
{
if (!this.IsEditingItem)
return !this.SourceList.IsFixedSize;
else
return false;
}
}
bool CanConstructItem
{
private get
{
if (!this._isItemConstructorValid)
this.EnsureItemConstructor();
return this._itemConstructor != (ConstructorInfo) null;
}
}
There doesn't seem to be an easy way to override this behaviour.
For option 1) the situation is a lot better. The DataGrid delegates creation of new items to the BindingListView, which in turn delegates to BindingList. BindingList<T> also checks for the existence of a default constructor, but fortunately BindingList<T> also allows the client to set the AllowNew property and attach an event handler for supplying a new item. See the solution later, but here's the relevant code in BindingList<T>
public bool AllowNew
{
get
{
if (this.userSetAllowNew || this.allowNew)
return this.allowNew;
else
return this.AddingNewHandled;
}
set
{
bool allowNew = this.AllowNew;
this.userSetAllowNew = true;
this.allowNew = value;
if (allowNew == value)
return;
this.FireListChanged(ListChangedType.Reset, -1);
}
}
Non-solutions:
Support by DataGrid (not available)
It would reasonable to expect the DataGrid to allow the client to attach a callback, through which the DataGrid would request a default new item, just like BindingList<T> above. This would give the client the first crack at creating a new item when one is required.
Unfortunately this isn't supported directly from the DataGrid, even in .NET 4.5.
.NET 4.5 does appear to have a new event 'AddingNewItem' that wasn't available previously, but this only lets you know a new item is being added.
Work arounds:
Business object created by a tool in the same assembly: use a partial class
This scenario seems very unlikely, but imagine that Entity Framework created its entity classes with no default constructor (not likely since they wouldn't be serializable), then we could simply create a partial class with a default constructor. Problem solved.
Business object is in another assembly, and isn't sealed: create a super-type of the business object.
Here we can inherit from the business object type and add a default constructor.
This initially seemed like a good idea, but on second thoughts this may require more work than is necessary because we need to copy data generated by the business layer into our super-type version of the business object.
We would need code like
class MyBusinessObject : BusinessObject
{
public MyBusinessObject(BusinessObject bo){ ... copy properties of bo }
public MyBusinessObject(){}
}
And then some LINQ to project between lists of these objects.
Business object is in another assembly, and is sealed (or not): encapsulate the business object.
This is much easier
class MyBusinessObject
{
public BusinessObject{ get; private set; }
public MyBusinessObject(BusinessObject bo){ BusinessObject = bo; }
public MyBusinessObject(){}
}
Now all we need to do is use some LINQ to project between lists of these objects, and then bind to MyBusinessObject.BusinessObject in the DataGrid. No messy wrapping of properties or copying of values required.
The solution: (hurray found one)
Use BindingList<T>
If we wrap our collection of business objects in a BindingList<BusinessObject> and then bind the DataGrid to this, with a few lines of code our problem is solved and the DataGrid will appropriately show a new item row.
public void BindData()
{
var list = new BindingList<BusinessObject>( GetBusinessObjects() );
list.AllowNew = true;
list.AddingNew += (sender, e) =>
{e.NewObject = new BusinessObject(... some default params ...);};
}
Other solutions
implement IEditableCollectionViewAddNewItem on top of an existing collection type. Probably a lot of work.
inherit from ListCollectionView and override functionality. I was partially successful trying this, probably can be done with more effort.
I've found another solution to this problem. In my case, my objects need to be initialized using a factory, and there isn't really any way to get around that.
I couldn't use BindingList<T> because my collection must support grouping, sorting, and filtering, which BindingList<T> does not support.
I solved the problem by using DataGrid's AddingNewItem event. This almost entirely undocumented event not only tells you a new item is being added, but also allows lets you choose which item is being added. AddingNewItem fires before anything else; the NewItem property of the EventArgs is simply null.
Even if you provide a handler for the event, DataGrid will refuse to allow the user to add rows if the class doesn't have a default constructor. However, bizarrely (but thankfully) if you do have one, and set the NewItem property of the AddingNewItemEventArgs, it will never be called.
If you choose to do this, you can make use of attributes such as [Obsolete("Error", true)] and [EditorBrowsable(EditorBrowsableState.Never)] in order to make sure no one ever invokes the constructor. You can also have the constructor body throw an exception
Decompiling the control lets us see what's happening in there.
private object AddNewItem()
{
this.UpdateNewItemPlaceholder(true);
object newItem1 = (object) null;
IEditableCollectionViewAddNewItem collectionViewAddNewItem = (IEditableCollectionViewAddNewItem) this.Items;
if (collectionViewAddNewItem.CanAddNewItem)
{
AddingNewItemEventArgs e = new AddingNewItemEventArgs();
this.OnAddingNewItem(e);
newItem1 = e.NewItem;
}
object newItem2 = newItem1 != null ? collectionViewAddNewItem.AddNewItem(newItem1) : this.EditableItems.AddNew();
if (newItem2 != null)
this.OnInitializingNewItem(new InitializingNewItemEventArgs(newItem2));
CommandManager.InvalidateRequerySuggested();
return newItem2;
}
As we can see, in version 4.5, the DataGrid does indeed make use of AddNewItem. The contents of CollectionListView.CanAddNewItem are simply:
public bool CanAddNewItem
{
get
{
if (!this.IsEditingItem)
return !this.SourceList.IsFixedSize;
else
return false;
}
}
So this doesn't explain why we we still need to have a constructor (even if it is a dummy) in order for the add row option to appear. I believe the answer lies in some code that determines the visibility of the NewItemPlaceholder row using CanAddNew rather than CanAddNewItem. This might be considered some sort of bug.
I had a look at IEditableCollectionViewAddNewItem and it seems to be adding this functionality.
From MSDN
The IEditableCollectionViewAddNewItem
interface enables application
developers to specify what type of
object to add to a collection. This
interface extends
IEditableCollectionView, so you can
add, edit, and remove items in a
collection.
IEditableCollectionViewAddNewItem adds
the AddNewItem method, which takes an
object that is added to the
collection. This method is useful when
the collection and objects that you
want to add have one or more of the
following characteristics:
The objects in the CollectionView are different types.
The objects do not have a default constructor.
The object already exists.
You want to add a null object to the collection.
Although at Bea Stollnitz blog, you can read the following
The limitation of not being able to add a new item when the source has no
default constructor is very well
understood by the team. WPF 4.0 Beta 2
has a new feature that brings us a
step closer to having a solution: the
introduction of
IEditableCollectionViewAddNewItem
containing the AddNewItem method. You
can read the MSDN documentation about
this feature. The sample in MSDN shows
how to use it when creating your own
custom UI to add a new item (using a
ListBox to display the data and a
dialog box to enter the new item).
From what I can tell, DataGrid doesn’t
yet use this method though (although
it’s a bit hard to be 100% sure
because Reflector doesn’t decompile
4.0 Beta 2 bits).
That answer is from 2009 so maybe it's usable for the DataGrid now
The simplest way I could suggest to provide wrapper for your class without default constructor, in which constructor for source class will be called.
For example you have this class without default constructor:
/// <summary>
/// Complicate class without default constructor.
/// </summary>
public class ComplicateClass
{
public ComplicateClass(string name, string surname)
{
Name = name;
Surname = surname;
}
public string Name { get; set; }
public string Surname { get; set; }
}
Write a wrapper for it:
/// <summary>
/// Wrapper for complicated class.
/// </summary>
public class ComplicateClassWraper
{
public ComplicateClassWraper()
{
_item = new ComplicateClass("def_name", "def_surname");
}
public ComplicateClassWraper(ComplicateClass item)
{
_item = item;
}
public ComplicateClass GetItem() { return _item; }
public string Name
{
get { return _item.Name; }
set { _item.Name = value; }
}
public string Surname
{
get { return _item.Surname; }
set { _item.Surname = value; }
}
ComplicateClass _item;
}
Codebehind.
In your ViewModel you need to create wrapper collection for your source collection, which will handle item adding/removing in datagrid.
public MainWindow()
{
// Prepare collection with complicated objects.
_sourceCollection = new List<ComplicateClass>();
_sourceCollection.Add(new ComplicateClass("a1", "b1"));
_sourceCollection.Add(new ComplicateClass("a2", "b2"));
// Do wrapper collection.
WrappedSourceCollection = new ObservableCollection<ComplicateClassWraper>();
foreach (var item in _sourceCollection)
WrappedSourceCollection.Add(new ComplicateClassWraper(item));
// Each time new item was added to grid need add it to source collection.
// Same on delete.
WrappedSourceCollection.CollectionChanged += new NotifyCollectionChangedEventHandler(Items_CollectionChanged);
InitializeComponent();
DataContext = this;
}
void Items_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Add)
foreach (ComplicateClassWraper wrapper in e.NewItems)
_sourceCollection.Add(wrapper.GetItem());
else if (e.Action == NotifyCollectionChangedAction.Remove)
foreach (ComplicateClassWraper wrapper in e.OldItems)
_sourceCollection.Remove(wrapper.GetItem());
}
private List<ComplicateClass> _sourceCollection;
public ObservableCollection<ComplicateClassWraper> WrappedSourceCollection { get; set; }
}
And finally, XAML code:
<DataGrid CanUserAddRows="True" AutoGenerateColumns="False"
ItemsSource="{Binding Path=Items}">
<DataGrid.Columns>
<DataGridTextColumn Header="Name" Binding="{Binding Path=Name}"/>
<DataGridTextColumn Header="SecondName" Binding="{Binding Path=Surname}"/>
</DataGrid.Columns>
</DataGrid>
I just wanted to provide an alternate solution to using a BindingList. In my situtation, the Business objects was held in an IEntitySet in a portable project (Silverlight), which did not support IBindingList.
The solution, first and foremost, is to subclass the grid, and overwrite the coerce callback for CanUserAddRows to use IEditableCollectionViewAddNewItem:
public class DataGridEx : DataGrid
{
static DataGridEx()
{
CanUserAddRowsProperty.OverrideMetadata(typeof(DataGridEx), new FrameworkPropertyMetadata(true, null, CoerceCanUserAddRows));
}
private static object CoerceCanUserAddRows(DependencyObject sender, object newValue)
{
var dataGrid = (DataGrid)sender;
var canAddValue= (bool)newValue;
if (canAddValue)
{
if (dataGrid.IsReadOnly || !dataGrid.IsEnabled)
{
return false;
}
if (dataGrid.Items is IEditableCollectionViewAddNewItem v && v.CanAddNewItem == false)
{
// The view does not support inserting new items
return false;
}
}
return canAddValue;
}
}
And then use the AddingNewItem event to create the item:
dataGrid.AddingNewItem += (sender, args) => args.NewItem = new BusinessObject(args);
And if you care for the details, here is the reason why it is a problem in the first place. The coerce callback in the framework looks like this:
private static bool OnCoerceCanUserAddOrDeleteRows(DataGrid dataGrid, bool baseValue, bool canUserAddRowsProperty)
{
// Only when the base value is true do we need to validate that the user
// can actually add or delete rows.
if (baseValue)
{
if (dataGrid.IsReadOnly || !dataGrid.IsEnabled)
{
// Read-only/disabled DataGrids cannot be modified.
return false;
}
else
{
if ((canUserAddRowsProperty && !dataGrid.EditableItems.CanAddNew) ||
(!canUserAddRowsProperty && !dataGrid.EditableItems.CanRemove))
{
// The collection view does not allow the add or delete action
return false;
}
}
}
return baseValue;
}
You see how it gets the IEditableCollectionView.CanAddNew? That means that it only enables adding when the view can insert and construct an item. The funny thing is that when we want to add a new item, it checks the IEditableCollectionViewAddNewItem.CanAddNewItem instead, which only asks if the view supports inserting new items (not creating):
object newItem = null;
IEditableCollectionViewAddNewItem ani = (IEditableCollectionViewAddNewItem)Items;
if (ani.CanAddNewItem)
{
AddingNewItemEventArgs e = new AddingNewItemEventArgs();
OnAddingNewItem(e);
newItem = e.NewItem;
}

Winforms: Enabling Localization by default (enforcing a project/solution policy)

Is there an easy way to set the Localizable property to true for newly created usercontrols / forms? The scope of the setting should ideally be a solution or a project.
In other words I want to say that this project/solution should be localizable, and then if I add a new form or control VS should automatically set the property to true.
Edit:
Although custom templates are possible, in a larger team they might not be always used. So it's more about enforcing a policy, ensuring that the team members do not ommit to set the property for the projects/solutions where it is a requirement that all forms/controls containing text resources should be localizable.
Note: Team Foundation Server is not an Option.
Not sure if it is worth the effort for a property that is so easy to change and so easy to see that it has the wrong value. But you can create your own item template.
For example: Project + Add User Control. Set its Localizable property to True. File + Export Template, select Item template. Next. Check the control you added. Next. Check all references, omit only the ones you'll never need. Next. Give it is good template name (say: "Localizable User Control").
You'll now have an item template available for future projects that has the property set. Repeat as necessary for other item templates, like a Form.
It's possible to write a unit test that uses reflection to determine whether a form/user control has been marked as localizable. Specifically, if a type has been marked as localizable, there will be an embedded resource file associated with the Type and that file will contain a ">>$this.Name" value. Here's some sample code:
private void CheckLocalizability()
{
try
{
Assembly activeAssembly = Assembly.GetAssembly(this.GetType());
Type[] types = activeAssembly.GetTypes();
foreach (Type type in types)
{
if (TypeIsInheritedFrom(type, "UserControl") || TypeIsInheritedFrom(type, "Form"))
{
bool localizable = false;
System.IO.Stream resourceStream = activeAssembly.GetManifestResourceStream(string.Format("{0}.resources", type.FullName));
if (resourceStream != null)
{
System.Resources.ResourceReader resourceReader = new System.Resources.ResourceReader(resourceStream);
foreach (DictionaryEntry dictionaryEntry in resourceReader)
{
if (dictionaryEntry.Key.ToString().Equals(">>$this.Name", StringComparison.InvariantCultureIgnoreCase))
{
localizable = true;
break;
}
}
}
if (!localizable)
{
Debug.Assert(false, string.Format("{0} is not marked localizable.", type.FullName));
}
}
}
}
catch (Exception ex)
{
Debug.Assert(false, string.Format("Exception occurred: Unable to check localization settings. {0}", ex.Message));
}
}
private bool TypeIsInheritedFrom(Type type, string baseType)
{
while (type != null)
{
if (type.Name.Equals(baseType, StringComparison.InvariantCultureIgnoreCase))
return true;
type = type.BaseType;
}
return false;
}
Please let me know if this helps.

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