Develop Reference

How can I disable WPF button highlight when mouse over or when clicked in runtime?

I've this code in C# to create a button as a child of a StackPanel:
`
Button myButton = new Button();
//All button stuff (Background, text...).
myStackPanel.Children.add(myButton);
`
But, as every button, it highlights every time the mouse is over or when I click it. Is there any way to change that in an easy code (I'm still new to C#) can remove that highlight.
I don't know how to do this. I haven't seen anything explaining this and the only codes I could find were in XAML, and I didn't understand them so couldn't translate them to C#.
The problem is all the code I find is about retemplating the XAML code. What I need is to do what I mentioned in C#, as the control is created from scratch in C#.

I took a look at a few of the answers for this and didn't see any I liked much.
WPF controls are lookless, meaning they have fixed behaviour but not specific look to them. You can re template a wpf control to pretty much anything you can describe in xaml. Many wpf controls have quite complicated templates.
Here's one way to template a button as described.
I've put this style in my window's resources. Usually such styles are in resource dictionaries which are merged in app.xaml.
<Window.Resources>
<Style x:Key="NoMouseOverButtonStyle" TargetType="{x:Type Button}">
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="BorderBrush" Value="LightGray"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="Border"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}" >
<ContentPresenter Margin="2"
HorizontalAlignment="Center"
VerticalAlignment="Center"
RecognizesAccessKey="True" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<Button Style="{StaticResource NoMouseOverButtonStyle}"
Content="This is my Button"
Click="Button_Click"
HorizontalAlignment="Left"
VerticalAlignment="Top"
/>
</Grid>
</Window>
The button references the style as a resource.
That style sets some defaults so the button has a border you can see but over ride.
The contentpresenter is critical because this is where whatever you make content of your button will appear.
If I set an actual value on a button then that will over ride the style.
Hence
<Button Style="{StaticResource NoMouseOverButtonStyle}"
Content="This is my Button"
Click="Button_Click"
HorizontalAlignment="Left"
VerticalAlignment="Top"
BorderBrush="Red"
/>
Gives me a red border on my button.
A lightgray border is rather simpler than a button has by default.
You could reproduce that. Maybe that'd be an interesting learning exercise.
Lookup the button template on msdn.
Google: "wpf button template msdn"
Take a look at that. Brace yourself - it is complicated.
See the button border brush is hard coded in the template?
Change the style above so it does the same.
Clue:
<Setter.Value>

WPF Popup with rounded corners at the bottom only

I wonder if it is possible to apply rounded corner to WPF popup bottom corners only.
I know it is possible to apply rounded corners to all WPF popup corners, for example, this, but to only ones I am not sure. So is it possible? if so, could you provide a little example?

I am providing template customize as per need
<Style x:Key="PopupContentStyle" TargetType="{x:Type ContentControl}">
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<Border BorderBrush="Gray" BorderThickness="2"
CornerRadius="0,0,20,20" Width="60" Height="60">
</Border>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
And then
<Popup>
<ContentControl Style="{StaticResource PopupContentStyle}">
</ContentControl>
</Popup>

WPF XAML display content in a ContentControl

I need to display a number in a square, centered horizontally and vertically.
When I tried to use a label for that purpose, it seemed like it ignored the centering completely. So I decided to use a grid and display a label on the grid as that centers perfectly.
I need to use a template as there's several themes available. From what I've found on the internet, I thought this ( ignoring the centering for now )
<ControlTemplate x:Key="ClockTemplate">
<Grid>
<Grid.Style>
<Style TargetType="Grid">
<Setter Property="Background" Value="White"/>
</Style>
</Grid.Style>
<Label>
<Label.Style>
<Style TargetType="Label">
<Setter Property="Foreground" Value="#376092"/>
</Style>
</Label.Style>
<ContentPresenter/>
</Label>
</Grid>
</ControlTemplate>
would be correct. Using it as follows:
<ContentControl Content="20" Height="64" Width="64" Template="{DynamicResource ClockTemplate}"/>
the content is not displayed tho, what am I doing wrong? Also, is there a better way to achieve my goal?

As per my understanding this is not the correct approach. Instead of creating ControlTemplate you have to write a Style for your control like below, also use StaticResource binding if possible. It is faster than Dynamic binding. Please not that, I have not mentioned the Label size inside the ControlTemplate. Please do it based on your needs
<Style x:Key="ContentControlStyle"
TargetType="ContentControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ContentControl">
<Grid Background="White">
<Label Foreground="#376092"
Width="200"
Height="100" Content="{TemplateBinding Content}">
</Label>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
bind your ContentControl with the newly created Style like below
<ContentControl Style="{StaticResource ContentControlStyle} ">
If your requirement is only to set some value in ContentControl, use Label instead and change the Style of the Label. Because ContentControl is heavy

Create a horizontal line between ListBoxItems (horizontally oriented ListBox)

I want to create a listbox like this:
-----|-----|-----|-----|-----|-----
The |'s are my listboxitems which I have separated using margins. This works fine. What I want is the listbox to have a background that contains this line. Or at least have it in the background. I tried a separator but that is not what I want because that is also clickable since I used it in the itemtemplate.
Any ideas?
Thanks

You have to add a style with a control template to the ListBox items.
<Style x:Key="{x:Type ListBoxItem}" TargetType="ListBoxItem">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Name="Border"
BorderThickness="1,0"
BorderBrush="Black"
Padding="2"
SnapsToDevicePixels="true">
<ContentPresenter />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

The Border control is intended for this type of decorative lines. The side's thickness are independently set, so use just one side for a single vertical line. On a related note, have you tried using a Grid control for your layout instead of margins?

I'm trying to create a timeline like control. I now fixed it using this:
<ListBox.Template>
<ControlTemplate>
<Border BorderThickness="2" BorderBrush="Black">
<Grid>
<Rectangle Height="2" HorizontalAlignment="Stretch" VerticalAlignment="Center" Fill="Black"/>
<ScrollViewer Padding="{TemplateBinding Padding}">
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
</ScrollViewer>
</Grid>
</Border>
</ControlTemplate>
</ListBox.Template>
This works fine in a testproject, but I'm having some problems in my main project. The rectangle remains under the scrollviewer. Well... making progress. Hope to fix this thing soon.
Thanks for your answers so far!

How can I set a border around a control during runtime in WPF?

I have an Image control on my WPF Form. How can I create a border around it during runtime?
Here's my XAML code:
<Image Margin="2.5"
Grid.Column="1" Grid.Row="0"
x:Name="Behemoth" Source="Images/Hero/Behemoth.gif" Stretch="Fill"
MouseEnter="HeroMouseEnter"
MouseLeave="HeroMouseLeave"
MouseDown="HeroMouseClick" />
Also, I want to know how to remove the border.
Maybe if I state my problem better there is an even better solution available.
I have many Images, and when a user says: "Hey, just show me the woman out of all the picture." I want a way to sort of highlight or draw the users attention to whatever images I need them to see. I was thinking about adding a border, but maybe that's too much work for something that can be solved easier.
Any help?

Although it's visually very different from a border, you could use an outter glow to signify the importance of the image. Then, you don't have to change the parent of the image.
Alternatively, you could use a custom Adorner to place a border around the image. Good info on Adorners can be found on msdn.

There's no straightforward way to do it, because the Border is a container, so you would have to remove the Image from its parent, put the Border instead, and put the Image back in the Border...
Another option would be to use templates :
<Window.Resources>
<ControlTemplate x:Key="imageWithBorder" TargetType="{x:Type Image}">
<Border BorderBrush="Red" BorderThickness="2">
<Image Source="{TemplateBinding Source}" />
</Border>
</ControlTemplate>
</Window.Resources>
...
<Image Name="image1" Source="foo.png"/>
When you want to put the border around the image, just assign the template to the image :
image1.Template = this.FindResource("imageWithBorder") as ControlTemplate;

For your stated needs, I suggest you use a ListBox with a custom ItemContainerStyle - one that always has a border but only makes it visible if the item is selected.
Here's the basic idea:
<ListBox ItemsSource="{Binding MyImageObjects}">
<ListBox.ItemContainerStyle>
<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Border x:Name="border">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ListBoxItem.IsSelected" Value="True">
<Setter ElementName="border" Property="BorderBrush" Value="Blue" />
<Setter ElementName="border" Property="BorderThickness" Value="2" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>