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Event Binding in MVVM

Posted By:      Posted Date: September 01, 2010    Points: 0   Category :WPF
We are implementing the MVVM in the WPF forms that we are designing. For this we have designed the specific ViewModels for each WPF view. The WPF form has various controls such as button, combo box etc. We are registering the button click event and other events in the ViewModel constructor. Is there better way of handling this? Pls.guide

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Event Binding


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<?xml version="1.0" encoding="utf-8" ?>
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
  <Receivers ListTemplateId="140">

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Design binding help with MVVM

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In the xaml I have:

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        <ItemsControl ItemsSource="{Binding AllEmployees}">
                    <StackPanel Orientation="Horizontal">
                        <TextBox Width="100" Text="{Binding FirstName}" />
                        <TextBox Width="100&q

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I have a problem trying to bind a property of my viewmodel from a DataForm EditTemplate template.

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 public string OtherData { get; set; }
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Binding an event handler to a list



I am trying to bind an event handler to a list using the following code. I have the same code before with success, but I am not sure why it is not binding it anymore. Also I am getting no error, but the event is not firing when I bind the event handler using the following code:


static void Main(string[] args)
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Need help on Data binding with DPs and Control Loaded event



I have a very interesting issue and i have been breaking my head on it since a long time.

I am new to WPF and related things like MVVM and all.

I have a window in which i place a user control which hosts a TabControl inside it.

This tab control has Custom Radio Button and Combo boxes which expose few Dependency Properties, Now while these custom controls are loaded author checks for the values and does 'something particular' which is intended behavior. However in my case while the control is being loaded the DPs have null values. I see the DP property changed events being fired post Load of that control only in my case. It works okay on other windows.

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 I have read on MSDN that the DPs should be set properly before load event, and in a sample application i see it behaving as per MSDN.

Binding is happening properly as there are no errors in out put window + I get the DP - Property changed events as well, but this happens only after load (I dont know why??)

Any help would really be appreaciated.



WPF Toolkit Calendar, Blackout Dates, DataTemplate, Binding, MVVM



I am building an application using the MVVM model and I'd like to bind a calendar's "BlackoutDates" collection. I found this interesting piece of code which shows how to achieve this binding through an Attached Property. I am using the WPF ToolKit at codeplex.

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Can any one help me ..


<toolkit:AutoCompleteBox Grid.Column="1" Grid.Row="1" Margin="2" 

                    ItemsSource="{Binding VendorMasterList}" MaxDropDownHeight="250"

                    FilterMode="StartsWith" IsTextCompletionEnabled="True" Visibility="Visible"

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                    IsEnabled="{Binding IsReadOnlySup}" 

                    SelectedItem="{Binding SelectedVendoerMaster,Mode=TwoWay}">




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            DependencyProperty.RegisterAttached("Command", typeof(ICommand), typeof(LostFocusEventManager), new UIPropertyMetadata(""));


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            return (ICommand)control.GetValue(CommandProperty);




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WPF: If Heineken did MVVM Frameworks Part 4

MVVM is to have an instance of a particular Model (say currentPerson) inside my ViewModel (say PeopleViewModel) which is exposed to the View (say PeopleView). The View binds and edits the Model directly.

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