Caliburn Micro: WPF, Silverlight, WP7 and WinRT/Metro made easy.

Reviewed: Caliburn.Micro v1.5.1 (May 23, 2013)

robjuca — Thu, 23 May 2013 15:29:18 GMT

Rated 5 Stars (out of 5) - I have created two windows store applications named "Movies 8" and "Series 8" using Caliburn.Micro as primary MVVM pattern and they are now available to download [free] from windows store. I have also included a link (see Settings) to my SkyDrive with full C# source code project for VS2012. I would like to thank all personal who have worked in Caliburn.Micro project that is a great framework.

New Comment on "Customizing The Bootstrapper"

kasperhj — Thu, 23 May 2013 14:02:39 GMT

Just as an FYI for people wondering about the MEF specific example given here. I think that MEF is only used because it can do DI without installing an IoC container.

New Post: RadDocking.DocumentHost, Caliburn.Micro and ContentControl

will_10geek — Thu, 23 May 2013 12:23:37 GMT

Greetings,

I have a project using Telerik and Caliburn.Micro. Up to this point everything has been smooth, clean, light and flawless. However, I've hit a roadblock and now need serious help. I need to use custom controls within the DocumentHost portion of the RadDocking framework. Below is XAML declarations that identifies a declaration that does work, and one that does not work using the same control.

Does NOT work:
<telerik:RadDocking.DocumentHost>

<telerik:RadSplitContainer>
    <telerik:RadPaneGroup>
        <telerik:RadDocumentPane Title="Document" x:Name="uxRadDocumentPane">
            <telerik:RadDocumentPane.Content>
                <StackPanel Background="Bisque">
                    <ContentControl x:Name="ImageControlImageViewModel"/>
                </StackPanel>
            </telerik:RadDocumentPane.Content>
        </telerik:RadDocumentPane>
    </telerik:RadPaneGroup>
</telerik:RadSplitContainer>

</telerik:RadDocking.DocumentHost>

Does work:
<telerik:RadSplitContainer>

<telerik:RadPaneGroup>
    <telerik:RadDocumentPane Title="Document">
        <telerik:RadDocumentPane.Content>
            <StackPanel Background="Bisque">
                <ContentControl x:Name="ImageControlImageViewModel2"/>
            </StackPanel>
        </telerik:RadDocumentPane.Content>
    </telerik:RadDocumentPane>
</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

As you can see, the declarations are nearly identical. The user control is identical, only has a different reference name. This work only when I remove the DocumentHost container. How can I get this to work and still keep the implementation lean, mean and clean?

Thank you,

Will

New Post: RadDocking.DocumentHost, Caliburn.Micro and ContentControl

will_10geek — Thu, 23 May 2013 12:23:37 GMT

<telerik:RadSplitContainer>
    <telerik:RadPaneGroup>
        <telerik:RadDocumentPane Title="Document" x:Name="uxRadDocumentPane">
            <telerik:RadDocumentPane.Content>
                <StackPanel Background="Bisque">
                    <ContentControl x:Name="ImageControlImageViewModel"/>
                </StackPanel>
            </telerik:RadDocumentPane.Content>
        </telerik:RadDocumentPane>
    </telerik:RadPaneGroup>
</telerik:RadSplitContainer>

</telerik:RadDocking.DocumentHost>

Does work:
<telerik:RadSplitContainer>

<telerik:RadPaneGroup>
    <telerik:RadDocumentPane Title="Document">
        <telerik:RadDocumentPane.Content>
            <StackPanel Background="Bisque">
                <ContentControl x:Name="ImageControlImageViewModel2"/>
            </StackPanel>
        </telerik:RadDocumentPane.Content>
    </telerik:RadDocumentPane>
</telerik:RadPaneGroup>

New Post: RadDocking.DocumentHost, Caliburn.Micro and ContentControl

will_10geek — Thu, 23 May 2013 12:23:37 GMT

<telerik:RadSplitContainer>
    <telerik:RadPaneGroup>
        <telerik:RadDocumentPane Title="Document" x:Name="uxRadDocumentPane">
            <telerik:RadDocumentPane.Content>
                <StackPanel Background="Bisque">
                    <ContentControl x:Name="ImageControlImageViewModel"/>
                </StackPanel>
            </telerik:RadDocumentPane.Content>
        </telerik:RadDocumentPane>
    </telerik:RadPaneGroup>
</telerik:RadSplitContainer>

</telerik:RadDocking.DocumentHost>

Does work:
<telerik:RadSplitContainer>

<telerik:RadPaneGroup>
    <telerik:RadDocumentPane Title="Document">
        <telerik:RadDocumentPane.Content>
            <StackPanel Background="Bisque">
                <ContentControl x:Name="ImageControlImageViewModel2"/>
            </StackPanel>
        </telerik:RadDocumentPane.Content>
    </telerik:RadDocumentPane>
</telerik:RadPaneGroup>

New Post: RadDocking.DocumentHost, Caliburn.Micro and ContentControl

will_10geek — Thu, 23 May 2013 12:23:37 GMT

<telerik:RadSplitContainer>
    <telerik:RadPaneGroup>
        <telerik:RadDocumentPane Title="Document" x:Name="uxRadDocumentPane">
            <telerik:RadDocumentPane.Content>
                <StackPanel Background="Bisque">
                    <ContentControl x:Name="ImageControlImageViewModel"/>
                </StackPanel>
            </telerik:RadDocumentPane.Content>
        </telerik:RadDocumentPane>
    </telerik:RadPaneGroup>
</telerik:RadSplitContainer>

</telerik:RadDocking.DocumentHost>

Does work:
<telerik:RadSplitContainer>

<telerik:RadPaneGroup>
    <telerik:RadDocumentPane Title="Document">
        <telerik:RadDocumentPane.Content>
            <StackPanel Background="Bisque">
                <ContentControl x:Name="ImageControlImageViewModel2"/>
            </StackPanel>
        </telerik:RadDocumentPane.Content>
    </telerik:RadDocumentPane>
</telerik:RadPaneGroup>

New Post: Child ViewModel Null When Using [Import]

iamdragonwolf — Wed, 22 May 2013 23:07:49 GMT

You can use [OnImportSatisfied] on a method and it will identify it to MEF as a callback when all imports have been resolved.

[OnImportSatisfied]
public void Initialize()
{
     ChildProperty.PropertyChanged +=
                (sender, args) =>
                    {
                        // do something here
                    };
}

New Post: Child ViewModel Null When Using [Import]

iamdragonwolf — Wed, 22 May 2013 23:07:49 GMT

You can use [OnImportSatisfied] on a method and it will identify it to MEF as a callback when all imports have been resolved.

[OnImportSatisfied]
public void Initialize()
{
     ChildProperty.PropertyChanged +=
                (sender, args) =>
                    {
                        // do something here
                    };
}

New Post: Child ViewModel Null When Using [Import]

ScottHarris — Wed, 22 May 2013 19:56:29 GMT

Hi,

I am trying hard to get up to speed on MEF, and I have run into an issue.

Let's say I have a parent View Model that will have a child ViewModel as a property, and needs to wire up to PropertyChanged on the child.

So, I have something like this....

    [Export(typeof (ParentViewModel))]
    public class ParentViewModel : Screen
    {
        [ImportingConstructor]
        public ParentViewModel()
        {
            // **********************************
            // PROBLEM IS, THIS IS NULL RIGHT NOW 
            // **********************************
            ChildProperty.PropertyChanged +=
                (sender, args) =>
                    {
                        // do something here
                    };
        }

        [Import]
        public ChildViewModel ChildProperty { get; set; }

        protected override void OnActivate()
        {
            // **********************************************************************************
            // CHILD PROPERTY IS NOT NULL HERE, BUT I'd RATHER NOT USE THIS BECAUSE
            // A) I WON'T ALWAYS INHERIT SCREEN
            // B) THIS COULD BE USED AS A PROPERTY WITHOUT A VIEW WHERE ACTIVATE WON'T GET CALLED
            // **********************************************************************************
            ChildProperty.PropertyChanged +=
                (sender, args) =>
                {
                    // do something here
                };
          
            base.OnActivate();
        }
    }

    [Export(typeof(ParentViewModel))]
    [PartCreationPolicy(CreationPolicy.NonShared)]
    public class ChildViewModel : PropertyChangedBase
    {
        private bool _myProperty;

        [ImportingConstructor]
        public ChildViewModel()
        {
        }

        public bool MyProperty
        {
            get { return _myProperty; }
            set
            {
                if (_myProperty == value)
                    return;

                _myProperty = value;
                NotifyOfPropertyChange(() => MyProperty);
            }
        }
    }

In this example, the Child View Model property of the parent is still null when I try to attach to the PropertyChanged event in the Parent's constructor. If I override Activate() and attach to the event there, that works fine. However, I don't always want to have to rely on Activate() for various reasons (like maybe I'll use an instance of a view model within a view model and not create a view for it).

Given this, what is the best way to know when the [Import] properties have been created in my parent view model so I can set properties, attach to events, etc on them? Should I just not use [Import] and manually create the child view models (though I would like to embrace MEF)?

Thanks!
Scott

New Post: Child ViewModel Null When Using [Import]

ScottHarris — Wed, 22 May 2013 19:56:29 GMT

    [Export(typeof (ParentViewModel))]
    public class ParentViewModel : Screen
    {
        [ImportingConstructor]
        public ParentViewModel()
        {
            // **********************************
            // PROBLEM IS, THIS IS NULL RIGHT NOW 
            // **********************************
            ChildProperty.PropertyChanged +=
                (sender, args) =>
                    {
                        // do something here
                    };
        }

        [Import]
        public ChildViewModel ChildProperty { get; set; }

        protected override void OnActivate()
        {
            // **********************************************************************************
            // CHILD PROPERTY IS NOT NULL HERE, BUT I'd RATHER NOT USE THIS BECAUSE
            // A) I WON'T ALWAYS INHERIT SCREEN
            // B) THIS COULD BE USED AS A PROPERTY WITHOUT A VIEW WHERE ACTIVATE WON'T GET CALLED
            // **********************************************************************************
            ChildProperty.PropertyChanged +=
                (sender, args) =>
                {
                    // do something here
                };
          
            base.OnActivate();
        }
    }

    [Export(typeof(ParentViewModel))]
    [PartCreationPolicy(CreationPolicy.NonShared)]
    public class ChildViewModel : PropertyChangedBase
    {
        private bool _myProperty;

        [ImportingConstructor]
        public ChildViewModel()
        {
        }

        public bool MyProperty
        {
            get { return _myProperty; }
            set
            {
                if (_myProperty == value)
                    return;

                _myProperty = value;
                NotifyOfPropertyChange(() => MyProperty);
            }
        }
    }

Created Unassigned: Remove IHaveDisplayName from IScreen and Screen [315]

dhilgarth — Wed, 22 May 2013 13:29:22 GMT

I don't see why `IScreen` inherits `IHaveDisplayName`.
Most of the time, you *don't* want to set the title of a window from the ViewModel, just like you normally wouldn't set the title of the button from the VM.

This interface is incredibly easy to implement, so there is really no reason to implement it by default.
Right now, I have to basically re-implement `Screen` without that interface to stop it from hijacking and overwriting the title defined in XAML. Furthermore, the current default (the type of the view model) is never a good value for a title.

I see not a single reason for having that interface implemented in `Screen`.

Reviewed: Caliburn.Micro v1.5.1 (May 22, 2013)

rohits79 — Wed, 22 May 2013 11:35:58 GMT

Rated 5 Stars (out of 5) - Thanks for the awesome gift :)

Commented Unassigned: Result turned into a Task using ExecuteAsync is not passed through IoC. [314]

cshepherd — Wed, 22 May 2013 08:36:01 GMT

We have the option to use the original coroutines or using C#5 async/await.

However, taking a class based on IResult and calling AsResult on it to return a Task for async/await doesn't pass it through IoC.BuildUp to inject properties (IWindowManager etc.).

For consistency could we pass it through IoC.BuildUp before execution or is there some other reason for this?
Comments: Sorry, yes I mean ExecuteAsync().

Edited Unassigned: Result turned into a Task using ExecuteAsync is not passed through IoC. [314]

tibel — Wed, 22 May 2013 08:01:52 GMT

Commented Unassigned: Result turned into a Task using ExecuteAsync is not passed through IoC. [314]

tibel — Wed, 22 May 2013 08:01:33 GMT

Source code checked in, #2f3237a5d9d9114a880c829e329ab731887d15c2

tibel — Wed, 22 May 2013 07:58:26 GMT

BuildUp IResult in ExecuteAsync()

New Post: Binding Conventions not working with Telerik and Deep Properties

RefractedPaladin — Tue, 21 May 2013 13:55:15 GMT

Not sure what I am doing wrong but here goes. I have a VM with a property on it called Authorization.

I have a View that corresponds to the VM with a bunch of controls. I have named the controls things like this: x:Name="Authorization_SelectedService_Rate" or x:Name="Authorization_Notes_Details". Now, the second one of those works but the first doesn't. By works I mean that when I go to Save the "form" my Authorization.Notes property will have a value but not my Authorizatien.SelectedService.

I've been working on this for awhile now and just can't figure out what I'm doing wrong. I would be willing to show complete View and ViewModel in hopes that someone can point out what I'm doing wrong.

Is it because I'm using Telerik Controls? I don't know...

These are truncated to make the 10000 character limit.

My View:

<UserControl x:Name="CreateAuthUserControl" x:Class="Green.Views.CreateAuthView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
             xmlns:cal="http://www.caliburnproject.org" 
             >
     <telerik:RadGridView x:Name="Services" IsReadOnly="True" SelectionMode="Extended" ScrollViewer.CanContentScroll="True"/>
     <telerik:RadComboBox x:Name="FrequencyList" Margin="3" Grid.Column="1" Grid.Row="1" ItemTemplate="{StaticResource FrequencyBoxCustomTemplate}"/>
     <TextBox x:Name="Authorization_Notes_Details" MaxLength="500" Height="Auto" MinHeight="15" MaxHeight="40" TextWrapping="Wrap" AcceptsReturn="True" AcceptsTab="True" VerticalScrollBarVisibility="Auto"/>

</UserControl>

My Authorization Class:

 public class Authorization : BindableBase
    {
public Service SelectedService
        {
            get
            {
                return this.selectedService;
            }
            set
            {
                this.selectedService = value;
                OnPropertyChanged();
            }
        }

        public int ID
        {
            get
            {
                return this.id;
            }
            set
            {
                this.id = value;
                this.OnPropertyChanged();
            }
        }
        public FrequencyChoice SelectedFrequency
        {
            get
            {
                return this.selectedFrequency;
            }
            set
            {
                this.selectedFrequency = value;
                this.OnPropertyChanged();
            }
        }
public Note Notes
        {
            get
            {
                return this.notes;
            }
            set
            {
                this.notes = value;
                this.OnPropertyChanged();
            }
        }
    }

My ViewModel

    [Export(typeof(IScreen))]
    public class CreateAuthViewModel : Screen, IHandle<MessageNotifier>
    {        
        private readonly IEventAggregator eventAggregator;

        private AuthorizationRepo authRepo;

        #region CONSTRUCTOR
        [ImportingConstructor]
        public CreateAuthViewModel(IEventAggregator eAgg)
        {
            eventAggregator = eAgg;
            eventAggregator.Subscribe(this);

            this.DisplayName = "Create Authorization";
            this.Authorization = new Authorization();
            this.authRepo = new AuthorizationRepo();
            
            GetAdminData();
        }

        #endregion

        #region PROPERTIES
        
        private Authorization authorization;
        public Authorization Authorization
        {
            get
            {
                return this.authorization;
            }
            set
            {
                this.authorization = value;
                NotifyOfPropertyChange(() => Authorization);
            }
        }

        private BindableCollection<Service> services;
        public BindableCollection<Service> Services
        {
            get { return services; }
            set
            {
                services = value;
                NotifyOfPropertyChange(()=> Services);
            }
        }

        private BindableCollection<FrequencyChoice> frequencyList;

        public BindableCollection<FrequencyChoice> FrequencyList
        {
            get { return frequencyList; }
            set
            {
                frequencyList = value;
                NotifyOfPropertyChange();
            }
        }
}

New Post: Binding Conventions not working with Telerik and Deep Properties

RefractedPaladin — Tue, 21 May 2013 13:55:15 GMT

<UserControl x:Name="CreateAuthUserControl" x:Class="Green.Views.CreateAuthView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
             xmlns:cal="http://www.caliburnproject.org" 
             >
     <telerik:RadGridView x:Name="Services" IsReadOnly="True" SelectionMode="Extended" ScrollViewer.CanContentScroll="True"/>
     <telerik:RadComboBox x:Name="FrequencyList" Margin="3" Grid.Column="1" Grid.Row="1" ItemTemplate="{StaticResource FrequencyBoxCustomTemplate}"/>
     <TextBox x:Name="Authorization_Notes_Details" MaxLength="500" Height="Auto" MinHeight="15" MaxHeight="40" TextWrapping="Wrap" AcceptsReturn="True" AcceptsTab="True" VerticalScrollBarVisibility="Auto"/>

</UserControl>

My Authorization Class:

 public class Authorization : BindableBase
    {
public Service SelectedService
        {
            get
            {
                return this.selectedService;
            }
            set
            {
                this.selectedService = value;
                OnPropertyChanged();
            }
        }

        public int ID
        {
            get
            {
                return this.id;
            }
            set
            {
                this.id = value;
                this.OnPropertyChanged();
            }
        }
        public FrequencyChoice SelectedFrequency
        {
            get
            {
                return this.selectedFrequency;
            }
            set
            {
                this.selectedFrequency = value;
                this.OnPropertyChanged();
            }
        }
public Note Notes
        {
            get
            {
                return this.notes;
            }
            set
            {
                this.notes = value;
                this.OnPropertyChanged();
            }
        }
    }

My ViewModel

    [Export(typeof(IScreen))]
    public class CreateAuthViewModel : Screen, IHandle<MessageNotifier>
    {        
        private readonly IEventAggregator eventAggregator;

        private AuthorizationRepo authRepo;

        #region CONSTRUCTOR
        [ImportingConstructor]
        public CreateAuthViewModel(IEventAggregator eAgg)
        {
            eventAggregator = eAgg;
            eventAggregator.Subscribe(this);

            this.DisplayName = "Create Authorization";
            this.Authorization = new Authorization();
            this.authRepo = new AuthorizationRepo();
            
            GetAdminData();
        }

        #endregion

        #region PROPERTIES
        
        private Authorization authorization;
        public Authorization Authorization
        {
            get
            {
                return this.authorization;
            }
            set
            {
                this.authorization = value;
                NotifyOfPropertyChange(() => Authorization);
            }
        }

        private BindableCollection<Service> services;
        public BindableCollection<Service> Services
        {
            get { return services; }
            set
            {
                services = value;
                NotifyOfPropertyChange(()=> Services);
            }
        }

        private BindableCollection<FrequencyChoice> frequencyList;

        public BindableCollection<FrequencyChoice> FrequencyList
        {
            get { return frequencyList; }
            set
            {
                frequencyList = value;
                NotifyOfPropertyChange();
            }
        }
}

New Post: Binding Conventions not working with Telerik and Deep Properties

RefractedPaladin — Tue, 21 May 2013 13:55:15 GMT

<UserControl x:Name="CreateAuthUserControl" x:Class="Green.Views.CreateAuthView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
             xmlns:cal="http://www.caliburnproject.org" 
             >
     <telerik:RadGridView x:Name="Services" IsReadOnly="True" SelectionMode="Extended" ScrollViewer.CanContentScroll="True"/>
     <telerik:RadComboBox x:Name="FrequencyList" Margin="3" Grid.Column="1" Grid.Row="1" ItemTemplate="{StaticResource FrequencyBoxCustomTemplate}"/>
     <TextBox x:Name="Authorization_Notes_Details" MaxLength="500" Height="Auto" MinHeight="15" MaxHeight="40" TextWrapping="Wrap" AcceptsReturn="True" AcceptsTab="True" VerticalScrollBarVisibility="Auto"/>

</UserControl>

My Authorization Class:

 public class Authorization : BindableBase
    {
public Service SelectedService
        {
            get
            {
                return this.selectedService;
            }
            set
            {
                this.selectedService = value;
                OnPropertyChanged();
            }
        }

        public int ID
        {
            get
            {
                return this.id;
            }
            set
            {
                this.id = value;
                this.OnPropertyChanged();
            }
        }
        public FrequencyChoice SelectedFrequency
        {
            get
            {
                return this.selectedFrequency;
            }
            set
            {
                this.selectedFrequency = value;
                this.OnPropertyChanged();
            }
        }
public Note Notes
        {
            get
            {
                return this.notes;
            }
            set
            {
                this.notes = value;
                this.OnPropertyChanged();
            }
        }
    }

My ViewModel

    [Export(typeof(IScreen))]
    public class CreateAuthViewModel : Screen, IHandle<MessageNotifier>
    {        
        private readonly IEventAggregator eventAggregator;

        private AuthorizationRepo authRepo;

        #region CONSTRUCTOR
        [ImportingConstructor]
        public CreateAuthViewModel(IEventAggregator eAgg)
        {
            eventAggregator = eAgg;
            eventAggregator.Subscribe(this);

            this.DisplayName = "Create Authorization";
            this.Authorization = new Authorization();
            this.authRepo = new AuthorizationRepo();
            
            GetAdminData();
        }

        #endregion

        #region PROPERTIES
        
        private Authorization authorization;
        public Authorization Authorization
        {
            get
            {
                return this.authorization;
            }
            set
            {
                this.authorization = value;
                NotifyOfPropertyChange(() => Authorization);
            }
        }

        private BindableCollection<Service> services;
        public BindableCollection<Service> Services
        {
            get { return services; }
            set
            {
                services = value;
                NotifyOfPropertyChange(()=> Services);
            }
        }

        private BindableCollection<FrequencyChoice> frequencyList;

        public BindableCollection<FrequencyChoice> FrequencyList
        {
            get { return frequencyList; }
            set
            {
                frequencyList = value;
                NotifyOfPropertyChange();
            }
        }
}

New Post: Navigate to another screen on WP8?

dominikjeske — Mon, 20 May 2013 11:01:52 GMT

Don't bother question about how to check if conductor is active – I was tired. All mess with this is again because of bug in panorama ;(