Collectives™ on Stack Overflow
Find centralized, trusted content and collaborate around the technologies you use most.
Learn more about Collectives
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Learn more about Teams
I am porting an old WinForms Desktop Application to WPF. The app GUI used WinForm's
PictureBox
to display images. The old WinForms app also had
OnClick
event handlers for all the PictureBoxes. Clicking the images actually did something important. Now that I am re-doing the UI in WPF, I found out as per
this
that the equivalent for WinForm's
PictureBox
control is WPF's
Image
. However, when I opened up the properties panel for the WPF
Image
, there was no
click
event to be handled, so I couldn't write a click event handler like I had in WinForms.
So, can you please tell me what can be done to achieve the equivalent of WinForm's
PictureBox
and it's click event in WPF? I want to display images and handle the case each time user clicks the image.
Just add a MouseDown (or MouseLeftButtonDown as suggested) event to your image like so
<Image x:Name=aPicture Source="mypic.jpg" MouseDown="aPicture_MouseDown"/>
// or
<Image x:Name=aPicture Source="mypic.jpg" MouseLeftButtonDown="aPicture_MouseDown"/>
which should add this to your code behind
private void aPicture_MouseDown(object sender, MouseEventArgs e)
//do something here
–
In WPF each control has its default template (how it looks) but you can easily change these templates and make controls look like you want. This makes it easier to pick control by its functionality and make it look like you want. In your case you want Click
so you choose Button
and change its Template
<Window ...>
<Window.Resources>
<Style TargetType="{x:Type Button}" x:Key="ImageButtonStyle">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<ContentPresenter/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Button Style="{StaticResource ImageButtonStyle}" Click="ImageButton_Click">
<Image Source="..."/>
</Button>
</Window>
With the above XAML Image
will be your Button
Below you can find simplified version of how to bind/change Image.Source
where everything is done in MainWindow but basically in WPF you don't manipulate controls but bind their properties using Binding
and manipulate these properties. Normally you would create dedicated class (ViewModel). Your class need to implement INofityPropertyChanged
interface, DataContext
needs to be set accordingly and bound property needs to raise INofityPropertyChanged.PropertyChanged
event each time its value is changed (that's how you notify UI to refresh value)
public partial class MainWindow : Window, INotifyPropertyChanged
public MainWindow()
InitializeComponent();
DataContext = this;
private ImageSource _myImageSource;
public ImageSource MyImageSource
get { return _myImageSource; }
_myImageSource = value;
OnPropertyChanged("MyImageSource");
private void ImageButton_Click(object sender, RoutedEventArgs e)
this.MyImageSource = new BitmapImage(...); //you change source of the Image
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
var handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
and in the XAML:
<Button Style="{StaticResource ImageButtonStyle}" Click="ImageButton_Click" Width="..." Height="...">
<Image Source="{Binding MyImageSource}"/>
</Button>
–
–
–
For a complete clickable experience, I suggest using the CJK method with the Cursor property set to Hand.
<Image x:Name="btnSearch" Source="/Images/search/search.png" MouseDown="btnSearch_MouseDown" Cursor="Hand"/>
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.