Given the following bit of XAML
<Border Name="Brder" Visibility="Visible" Width="10" Height="10" Background="Red"></Border>
<Button Content="Hide"></Button>
How can I set the button click to change the visibility of the border (not using code behind)?
I know it's trivial in code behind and the routed click event only seems to allow storyboard manipulation?
Thanks
If you change the Button to a ToggleButton you can bind visibility to IsChecked of the ToggleButton using XAML only. Also remember that Expanders support this behavior as well and you can laways style them if you don't like the default look.
Related
I'm trying to change an image using events like Click, MouseEnter and MouseLeave. In first place I tried to do it with Buttons in order to have "Click" event too, but I don't know how to remove that lightblue background that appears by default when I put the mouse over the button with a png background.
After this, I tried to use , setting the resource image.png in its Source.
The main problem is that I don't know what to do in code-behind to change between Image Resources in order to change the Source of the control.
I want to know too if I can use a "Click Event" with an control
Update1:
Ok, I tried it by using Binding
For now I think its solved, but I have another problem.
I don't know exactly how to remove that "border". I tried to put the borderbrush property of the buttons to 0, but it seems to be another property or another control.
UI
Thanks.
You can put an image as the content of a button, and add an Click event to that Button. This way, an event gets called when you press the button.
<Button Margin="0,10" Name="mainButton" Click="mainButton_Click">
<Button.Content>
<Image Source="C:/reference-to-image" Height="30"/>
</Button.Content>
</Button>
In the background you can than change the Picture.
This question shows how to do that in the background.
WPF Image UriSource and Data Binding using http:\\ URL
PS. If you want to change the behavior of controls on certain events things like pressing the left mouse button on it, you have to overwrite the event triggers using
<Style TargetType="TextBlock">
<Style.Triggers>
<EventTrigger RoutedEvent="MouseEnter">
<EventTrigger.Actions>
...
Hope this helps.
UPDATE
You can set the BorderThickness to 0 and than set the Value of the Padding Property to 0. The Button Control has a predefined padding value, which makes it look like it has a border.
Padding is the space inside the control and the content e.g the space between the button and the picture
<StackPanel Orientation="Horizontal">
<Button Click="Button_Click" Padding="0" BorderThickness="0">
<Image Source="link-to-pic" Height="100"/>
</Button>
<Button Click="Button_Click" Padding="0" BorderThickness="0">
<Image Source="link-to-pic" Height="100"/>
</Button>
</StackPanel>
I need a button-style menu, i.e. horizontally arranged group of always visible buttons.
Like radiobuttons they should have a selected property, i.e. the click-command should fire only when the selected status changes to true, not on every click as with a normal button.
Dude, this is WPF, you can use any control that fits some or any of your requirements and then simply provide a new ControlTemplate for it. Incidentally, there is no Selected or IsSelected property on a RadioButton... perhaps you were referring to the IsChecked property? This property is inherited from the ToggleButton, so that may be more appropriate.
As the ToggleButton is already a Button, you could even get away without providing a new ControlTemplate for it.
As for your requirement regarding the Click event, I don't think that you will find that functionality on any of the WPF controls, but it could be manually implemented:
private void Button_Click(object sender, RoutedEventArgs e)
{
if (ToggleButton.IsChecked == true)
{
// Do something here when the `Button.IsChecked` == true
}
}
RadioButton also like other Buttons fire Click event on every click. Also there is no Selected property on the RadioButton.
But if you want your MenuItems to be like Button, then you can use ToggleButton here.
ToggleButton has IsChecked Property which tracks the checked state of button and Checked event which is fired when ToggleButton is Checked.
Also, if you want to automatically check/uncheck your ToggleButtons on click of other ToggleButton then you can use RadioButton as DataTemplate of your MenuItem and override its Template like below:
<RadioButton Content="MyRadio" Click="RadioButton_Click">
<RadioButton.Template>
<ControlTemplate TargetType="RadioButton">
<ToggleButton Checked="ToggleButton_Checked" IsChecked="{Binding IsChecked, RelativeSource={RelativeSource TemplatedParent}}" Content="{TemplateBinding Content}"/>
</ControlTemplate>
</RadioButton.Template>
</RadioButton>
It turned out that a ListBox with a horizontal layout in a WrapPanel suits my scenario perfectly.
I posted the solution in another question.
I have a combobox that displays a list of items, and I want to place a button next to it which triggers a command to see the details of the selected item. So far, so good. Now I want the button to be visible only if the combobox has focus (or is in "edit" mode, but not only when the popup is open).
I thought I could bind the visibility of the button to some focus property of the combobox, something like this:
<Button Content="Details" Visibility="{Binding ElementName=elementListComboBox,
Path=IsFocused, Converter={StaticResource Bool2VisibilityConverter}}"/>
But I found no way to know if the control I want is focused or not. I looked at the FocusManager.FocusedElement, but I don't know how to get the focused control I want inside the binding. Is there a way to achieve this in XAML?
Ok, the way to get this working as I wanted is this:
<Button Command="{Binding SomeCommand}"
Content="Details"
Focusable="False"
Visibility="{Binding ElementName=elementListComboBox,
Path=IsKeyboardFocusWithin,
Converter={StaticResource Bool2VisibilityConverter}}"/>
Two key factors here: bind the button's visibility to IsKeyboardFocusWithin property of the combobox, and set the button's Focusable property to false, else it will get collapsed when you want to click on it.
Hope this is useful.
Sorry for the title, I just don't know how to explain it in one sentence.
So here is my goal: I need to have a boolean in my ViewModel define the visibility for a control (border).
I know I can achieve this with a BooleanToVisibilityConverter, but there is a little more to it. I want a button on my UI to be shown if the control is not visible. Once that button is pushed, then I want the boolean in my ViewModel to be TRUE and then I want the control to be visible and the button that was just pushed to be collapsed. Once that control is visible, I would like a button within that recently visible control to make the control collapsed and then make the original button visible.
Basically, there are two buttons: 1 to make visible (then collapse itself) and the other is to collapse its container and then make the first button visible.
I am trying to do all this with MVVM so if I can avoid code behind in my View that would be ideal!
Since you're using ICommands on your viewmodel, this should work...Assume your commands are "ShowBorderCommand" and "HideBorderCommand" and the property on your viewmodel is "ShowBorder"
<ConverterNamespace:BooleanToVisibilityConverter x:Key="BoolToVis"/>
<ConverterNamespace:ReverseBooleanToVisibilityConverter x:Key="BoolToCollapse"/>
<Border Visibility="{Binding ShowBorder, Converter={StaticResource BoolToVis}}">
<Button Command="{Binding HideBorderCommand}"/>
</Border>
<Button Command="{Binding ShowBorderCommand}" Visbility="{Binding ShowBorder, Converter={StaticResource BoolToCollapse}}"/>
My WPF Converters library has a BooleanToVisibilityConverter that allows reverse conversions, as well as allowing the use of Hidden instead of Collapsed:
<con:BooleanToVisibilityConverter x:Key="ReverseBooleanToVisibilityConverter" IsReversed="True"/>
<Button Visibility="{Binding SomeProperty, Converter={StaticResource ReverseBooleanToVisibilityConverter}}"/>
I am trying out new styles with silverlight, and I created a new button skin with blend that consists of a border and a textblock. Wondered if there is a way to change the the text of the textblock when the the button's content(text) property is changed.
The binding would look like this:
<TextBlock Text="{TemplateBinding Content}"/>
The problem is when I try to set the content to something other than text:
<Button>
<Button.Content>
<Rectangle Fill="#FFB51111"/>
</Button.Content>
</Button>
In this case using the ContentPresenter would work better. It uses the same binding expression, but can display more than text. But all that is really up to you.
I don't really get what your trying to do. Normally, you include a TextBlock like that as a part of the button content.
Use a ContentPresenter rather than a TextBlock in your Template.