WPF ICommand Implementation for ComboBoxItem

Question

How can I implement ICommand in WPF(4.5) ComboBoxItem? I tried CommandBinding but I getting error message "Command' property of type 'CommandBinding'. A 'Binding' can only be set on a DependencyProperty of a DependencyObject"

Please post your code - what property on ComboBoxItem are you trying to bind to ? — auburg, Oct 03 '17 at 08:15
Possible duplicate of [WPF ICommand MVVM implementation](https://stackoverflow.com/questions/1468791/wpf-icommand-mvvm-implementation) — rmjoia, Oct 03 '17 at 08:22
Command is used to handle user input from buttons (mostly) If you want to have something(?) execute when selecting a item in a `ComboBox` I suggest either fire an event or use databinding. — Bojje, Oct 03 '17 at 08:34
Hi rmjoia, this is not a duplicate of the link you have posted. Please do not infer. — Reiz Troy Durante, Oct 03 '17 at 08:45
@ReizTroyDurante You should edit your question to include relevant code, not throw it somewhere in comments. — svgrafov, Oct 03 '17 at 09:08
Thanks everyone! I already found the root cause. The reason for the error is Ive referenced a wrong version of Sytem.Windos.Interactivity(4.5) which is incompatible with the MahApps(4.0) version I am using. — Reiz Troy Durante, Oct 05 '17 at 02:54

Ramankingdom · Accepted Answer · 2017-10-04T07:05:41.117

-1

Add Reference to System.Windows.Interactivity as shown below

Then in Windows.xaml add below line . This will add reference to XAML

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

and your XAML will be like as given below

And your Combobox XAML be like : -

<ComboBox Name="myComboBox" SelectedValuePath="Content">
        <i:Interaction.Triggers>
        <i:EventTrigger EventName="SelectionChanged">
            <i:InvokeCommandAction Command="{Binding YourCommandName}" 
             CommandParameter="{Binding ElementName=myComboBox, 
              Path=SelectedValue}"/>
        </i:EventTrigger>
     </i:Interaction.Triggers>
     <ComboBoxItem Content="ItemOne" />
     <ComboBoxItem Content="ItemTwo" />
     <ComboBoxItem Content="ItemThree" />
</ComboBox>

edited Oct 04 '17 at 07:05

answered Oct 03 '17 at 09:26

Ramankingdom

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I got error: {"Could not load file or assembly 'System.Windows.Interactivity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)":"System.Windows.Interactivity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"} – Reiz Troy Durante Oct 04 '17 at 00:11
You have to add as reference – Ramankingdom Oct 04 '17 at 06:48
@ReizTroyDurante I added the code reference – Ramankingdom Oct 04 '17 at 07:06
Thanks Ramankingdom! I already found the root cause. The reason for the error is Ive referenced a wrong version of Sytem.Windos.Interactivity(4.5) which is incompatible with the MahApps(4.0) version I am using. – Reiz Troy Durante Oct 05 '17 at 02:52
can you please mark as answer. – Ramankingdom Oct 05 '17 at 05:33

WPF ICommand Implementation for ComboBoxItem

1 Answers1