I have Listbox with a Checkbox. That's the way how I built it:
<Style x:Key="_ListBoxItemStyleCheckBox" TargetType="ListBoxItem">
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<CheckBox Name="_Border" Margin="5,2" IsChecked="{TemplateBinding IsSelected}">
<ContentPresenter />
</CheckBox>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
This is my ListBox:
<ListBox
VerticalAlignment="Stretch"
ItemsSource="{Binding Items}"
SelectionMode="Multiple"
ItemContainerStyle="{StaticResource _ListBoxItemStyleCheckBox}">
<ListBoxItem>ListBox Item #1</ListBoxItem>
<ListBoxItem>ListBox Item #2</ListBoxItem>
<ListBoxItem>ListBox Item #3</ListBoxItem>
</ListBox>
When I hover over the Checkbox I get the default color (blue). How can I change this color?
I don't want to change the color of the text. Only the border color of the Checkbox.
Thank you for any help!
You should create template.
CheckBox Template Sample
<Style TargetType="{x:Type CheckBox}" x:Key="chb">
<Setter Property="Margin" Value="5 2 5 2"/>
<Setter Property="IsChecked" Value="{Binding RelativeSource={RelativeSource AncestorType=ListBoxItem}, Path=IsSelected}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Border x:Name="border"
Grid.Column="0"
Width="20"
Height="20"
Background="Transparent"
BorderBrush="Black"
BorderThickness="2">
<Viewbox x:Name="view"
Width="22"
Height="22"
Visibility="Collapsed"
HorizontalAlignment="Center"
VerticalAlignment="Center">
<Canvas Width="24" Height="24">
<Path Data="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z" Fill="#333333"/>
</Canvas>
</Viewbox>
</Border>
<TextBlock Grid.Column="1"
Text="{Binding RelativeSource={RelativeSource AncestorType=ListBoxItem}, Path=Content}"
Margin="5 0 0 0"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="border" Property="BorderBrush" Value="Red"/>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter TargetName="view" Property="Visibility" Value="Visible"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Connnecting by using StaticResource
<Style x:Key="_ListBoxItemStyleCheckBox" TargetType="ListBoxItem">
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<CheckBox Name="_Border" Style="{StaticResource chb}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
It will be shown like this.
And I brought Path SVG Data in CheckBox at 'Material Design Icons'.
https://materialdesignicons.com/
<Style x:Key="_ListBoxItemStyleCheckBox" TargetType="ListBoxItem">
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<CheckBox Name="_Border" Margin="5,2" IsChecked="{TemplateBinding IsSelected}">
<CheckBox.Resources>
<Style TargetType="{x:Type CheckBox}">
<Setter Property="BorderBrush" Value="LightGray" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="BorderBrush" Value="Gray" />
</Trigger>
</Style.Triggers>
</Style>
</CheckBox.Resources>
<ContentPresenter />
</CheckBox>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Css helps you do this,for instance
ListBox tr.rowHover:hover
{
background-color: Yellow;
}
<asp ..... rowstyle-cssclass="rowHover" ...../>
I have created one custom cotrol
Generic.xaml code is below -
<BitmapImage x:Key="RightImaGE" x:Name="imgD" UriSource="/XYZ.UI_Test;components/Resources/Pfad55-1.png"/>
<Style TargetType="{x:Type local1:CustomButton}" >
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local1:CustomButton}">
<!--<Image Name="imgDefault" Source="{TemplateBinding Image}" Stretch="UniformToFill" />-->
<ControlTemplate.Triggers>
<DataTrigger Binding="{Binding Path=ContentOff, RelativeSource={RelativeSource AncestorType=local1:CustomButton}}" Value="SETTINGS">
<Setter Property="Background" Value="Red"/>
<Setter Property="Image.Source" Value="{DynamicResource RightImaGE}" />
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
CustomButton.cs codebehind is below
public string ContentOff
{
get { return (string)GetValue(ContentOffProperty); }
set { SetValue(ContentOffProperty, value); }
}
public static readonly DependencyProperty ContentOffProperty =
DependencyProperty.Register("ContentOff",
typeof(string), typeof(CustomButton), new PropertyMetadata(null));
public ImageSource Image
{
get { return (ImageSource)GetValue(ImageProperty); }
set { SetValue(ImageProperty, value); }
}
public static readonly DependencyProperty ImageProperty =
DependencyProperty.Register("Image", typeof(ImageSource), typeof(CustomButton), new PropertyMetadata(default(ImageSource)));
I have defined one common style in app.xaml code is below
<Application.Resources>
<Style x:Key="BigButtonStyle" TargetType="local:CustomButton" >
<Setter Property="Control.Background" Value="Transparent"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="Margin" Value="1"/>
<Setter Property="FontSize" Value="27"/>
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="Foreground" Value="#1d5560"/>
<Setter Property="Width" Value="170"/>
<Setter Property="MaxHeight" Value="50"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:CustomButton}">
<Canvas Margin="1">
<Image x:Name="img" Source="Resources/Pfad55.png" Stretch="UniformToFill" >
<Image.Style>
<Style TargetType="{x:Type Image}">
<Setter Property="Source" Value="Resources/Pfad55.png" />
<!--<Style.Triggers>
--><!--<Trigger Property="ContentOff" Value="SETTINGS">
<Setter Property="Opacity" Value="0.5" />
</Trigger>--><!--
</Style.Triggers>-->
</Style>
</Image.Style>
</Image>
<ContentPresenter HorizontalAlignment="Center" Content="{TemplateBinding ContentOff}" Canvas.Top="14" Canvas.Left="47"
VerticalAlignment="Center"/>
</Canvas>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Now I have Mainwindows.xaml where I am using Custombutton and if button content is Settings it should change different image through trigger than common image which is defined in bigbuttonstyle .
<Controls:CustomButton Grid.Row="8" Grid.Column="2" Style="{StaticResource BigButtonStyle}"
ContentOff="SETTINGS"
Image="Resources/Pfad55-1.png"/>
I tried to use data trigger here but not working and tried property trigger too. But image not changing somehow.
You can use two different style with style inheritance -
<Style x:Key="SmallButtonStyle" TargetType="local:CustomButton" BasedOn="{StaticResource BigButtonStyle}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:CustomButton}">
<Canvas Margin="1">
<Image Source="Resources/Pfad55-1.png" Stretch="UniformToFill" ></Image>
<ContentPresenter HorizontalAlignment="Center" Content="{TemplateBinding ContentOff}" Canvas.Top="14" Canvas.Left="85"
VerticalAlignment="Center"/>
</Canvas>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
then use it
<Controls:CustomButton Grid.Row="8" Grid.Column="2" Style="{StaticResource SmallButtonStyle}"
ContentOff="SETTINGS"
Image="Resources/Pfad55-1.png"/>
It'll be working but without trigger.
Another solution I have added based on your requirement.
Change your Generic.Xaml code like below.
<Style TargetType="{x:Type local1:CustomButton}" >
<Setter Property="FontSize" Value="27"/>
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="Foreground" Value="#1d5560"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local1:CustomButton}">
<Grid>
<Image Stretch="Fill" >
<Image.Style>
<Style TargetType="{x:Type Image}">
<Setter Property="Source" Value="Resources/Pfad55.png" />
<Style.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local1:CustomButton},Path=ContentOff}"
Value="SETTINGS">
<Setter Property="Source"
Value="Resources/Pfad55-1.png" />
</DataTrigger>
</Style.Triggers>
</Style>
</Image.Style>
</Image>
<ContentPresenter HorizontalAlignment="Left" Margin="50,0,0,0" Content="{TemplateBinding ContentOff}"
VerticalAlignment="Center"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
And Chnage your MainWindow.xaml implementation with this
<Controls:CustomButton Grid.Row="8" Grid.Column="2" ContentOff="SETTINGS"/>
You were using App.xaml style with BigButtonStyle , that's why custom control styles and trigger was not firing. Your App.xaml style was locally overriding custom control style and trigger from Generic.xaml.
I am currently using the XAML below to change the image on a toggle button for each state. How can I define a template or style that will allow me to define the images that are to be used in the button definition such that I don't have to repeat everything below for each button. Is this even possible ?
Ideally I would like to define a template with properties such as 'checkedImage', 'uncheckedImage' and then set these properties in the button definition in Designer.
I would also like the button to prevent the display of any other states or animations but I can't seem to prevent the background changing when the button is selected or when there is a mouseover. Are there some additional states that I don't have defined below?
Sample code (XAML, C#) for the style or template and for the actual toggle button definition would be appreciated. Also any references to 'simple' samples and explanations would be appreciated.
Thanks
EDIT: Update with my latest attempt...
This almost works - the correct image never gets displayed when the button is Checked. Any ideas what I am missing here?
<Style x:Key="ImgToggleButton" TargetType="ToggleButton">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Grid x:Name="GD" Background="White">
<ContentPresenter x:Name="CP" Content="{TemplateBinding Content}"></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content">
<Setter.Value>
<Image Source="{Binding Path=Tag, RelativeSource={RelativeSource AncestorType=ToggleButton}}" Stretch="Uniform"/>
</Setter.Value>
</Setter>
<Setter TargetName="GD" Property="Background" Value="{DynamicResource ThemeSolidColorBrushBlue}"/>
</Trigger>
<Trigger Property="IsChecked" Value="False">
<Setter TargetName="GD" Property="Background" Value="White"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<!-- Nothing so we have no change-->
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
And here is the button definition
<ToggleButton x:Name="allTestsToggleButton" Tag="Asset/AllTestsButton_1.png" Style="{DynamicResource ImgToggleButton}" ClickMode="Press" Checked="allTestsToggleButton_Checked" Unchecked="allTestsToggleButton_Unchecked" Grid.Row="2" Grid.Column="3" Grid.ColumnSpan="5">
<ToggleButton.Content>
<Image Source="Assets/AllTestsButton_0.png" Stretch="Uniform"/>
</ToggleButton.Content>
</ToggleButton>
Setting TargetName="CP" does not work either
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter TargetName="CP" Property="Content">
<Setter.Value>
<Image Source="{Binding Path=Tag, RelativeSource={RelativeSource AncestorType=ToggleButton}}" Stretch="Uniform"/>
</Setter.Value>
</Setter>
<Setter TargetName="GD" Property="Background" Value="{DynamicResource ThemeSolidColorBrushBlue}"/>
</Trigger>
<Trigger Property="IsChecked" Value="False">
<Setter TargetName="GD" Property="Background" Value="White"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<!-- Nothing so we have no change-->
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
Update1
You can use this style for multiple button with different images and I have used tag for storing image for checked state true and use templatebinding for default look i.e state=false
<Window.Resources>
<BitmapImage x:Key="imag1" UriSource="image1.jpg"></BitmapImage>
<BitmapImage x:Key="imag2" UriSource="path.jpg"></BitmapImage>
<Style TargetType="ToggleButton">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Grid x:Name="GD" Background="{TemplateBinding Background}">
<ContentPresenter></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter TargetName="GD" Property="Background">
<Setter.Value>
<ImageBrush ImageSource="{Binding Path=Tag, RelativeSource={RelativeSource AncestorType=ToggleButton}}"></ImageBrush>
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<ToggleButton x:Name="sampleTestToggleButton" Tag="{StaticResource imag2}" ClickMode="Press" Grid.Row="4" Grid.Column="3" BorderBrush="Transparent" Foreground="Transparent">
<ToggleButton.Background>
<ImageBrush ImageSource="{StaticResource imag1}"></ImageBrush>
</ToggleButton.Background>
</ToggleButton>
Update2:
Hope this helps.Run this code separately.It is working fine here.
<Window.Resources>
<Style x:Key="ImgToggleButton" TargetType="ToggleButton">
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<Image Stretch="Uniform" Source="{Binding Content,RelativeSource={RelativeSource TemplatedParent}}"></Image>
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Grid x:Name="GD" Background="White">
<ContentPresenter></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="ContentTemplate">
<Setter.Value>
<DataTemplate>
<Image Stretch="Uniform" Source="{Binding Path=Tag, RelativeSource={RelativeSource AncestorType=ToggleButton}}"></Image>
</DataTemplate>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsChecked" Value="False">
<Setter TargetName="GD" Property="Background" Value="White"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<!-- Nothing so we have no change-->
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<ToggleButton x:Name="allTestsToggleButton" Content="imag2.jpg" Tag="imag1.jpg" Style="{DynamicResource ImgToggleButton}" ClickMode="Press" Grid.Row="2" Grid.Column="3" Grid.ColumnSpan="5"/>
I think, you need for the ability to use vector graphics in WPF. In this case, to use the Path, where in Data to the specified coordinates on which the object is drawn MSDN.
Advantages:
Do not store it in the files, smaller size
Do not store this files in Resources
Dynamically changing color, size and the whole shape
The Minuses, in my opinion:
You can not always find the right Data for the Path
About minus: There are special sites, like www.modernuiicons.com and utilities for converting the image to Data. For converting Image to Vector graphics (Path) use Inkscape, him free and very useful. For more information see this link:
Vectorize Bitmaps to XAML using Potrace and Inkscape
Example
<Window.Resources>
<Style x:Key="styleCustomCheckBox" TargetType="{x:Type CheckBox}">
<Setter Property="FontFamily" Value="Verdana" />
<Setter Property="FontSize" Value="14" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<StackPanel Orientation="Horizontal">
<Path x:Name="MyPin" Width="18" Height="18" Stretch="Fill" Fill="#FF000000"
Data="F1 M 56.1355,32.5475L 43.4466,19.8526C 42.7886,20.4988 42.298,21.2123 41.9749,21.9932C 41.6519,22.7741 41.4903,23.5729 41.4903,24.3895C 41.4903,25.1942 41.6529,25.987 41.9779,26.7679L 34.0577,34.6821C 33.3918,34.3372 32.6991,34.0776 31.9796,33.9032C 31.2601,33.7288 30.5298,33.6415 29.7885,33.6415C 28.623,33.6415 27.4953,33.8526 26.4052,34.2748C 25.315,34.697 24.3419,35.3342 23.4856,36.1865L 30.2344,42.9174L 25.9027,47.9032L 22.6532,51.8425L 20.5988,54.5836C 20.1212,55.2892 19.8823,55.753 19.8823,55.975L 19.8645,56.0701L 19.9002,56.088L 19.9002,56.1474L 19.9358,56.1058L 20.0131,56.1236C 20.2351,56.1236 20.6989,55.8888 21.4045,55.419L 24.1457,53.3765L 28.0849,50.1151L 33.0945,45.7775L 39.8016,52.5025C 40.6579,51.6462 41.2961,50.6731 41.7163,49.5829C 42.1365,48.4928 42.3466,47.367 42.3466,46.2056C 42.3466,45.4603 42.2603,44.729 42.0879,44.0115C 41.9155,43.294 41.6548,42.6003 41.3069,41.9304L 49.2202,34.0161C 50.0011,34.3372 50.7939,34.4978 51.5986,34.4978C 52.4192,34.4978 53.2189,34.3362 53.9979,34.0132C 54.7768,33.6901 55.4894,33.2015 56.1355,32.5475 Z "/>
<ContentPresenter VerticalAlignment="Center" Margin="10,0,0,0" />
</StackPanel>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter TargetName="MyPin" Property="Data" Value="F1 M 32.3691,30.2225L 33.2253,29.3901L 15.361,11.5258C 13.9814,12.7067 12.6951,13.9936 11.5148,15.3738L 26.6252,30.4842C 27.743,30.1631 28.8767,30.0025 30.0263,30.0025C 30.8191,30.0025 31.6,30.0759 32.3691,30.2225 Z M 45.5039,49.3629L 60.6292,64.4826C 62.0123,63.2996 63.3017,62.0101 64.4846,60.6268L 46.6218,42.7866L 45.7834,43.619L 45.9439,44.7726L 45.9915,45.9261L 45.8785,47.6713L 45.5039,49.3629 Z M 56.1355,32.5475L 43.4466,19.8526C 42.7886,20.4987 42.298,21.2123 41.9749,21.9932C 41.6519,22.7741 41.4903,23.5729 41.4903,24.3895C 41.4903,25.1942 41.6529,25.987 41.9779,26.7679L 34.0577,34.6821C 33.3918,34.3372 32.6991,34.0776 31.9796,33.9032C 31.2601,33.7288 30.5298,33.6415 29.7885,33.6415C 28.623,33.6415 27.4953,33.8526 26.4052,34.2748C 25.315,34.697 24.3419,35.3342 23.4856,36.1865L 30.2344,42.9174L 25.9027,47.9032L 22.6532,51.8425L 20.5988,54.5836C 20.1212,55.2892 19.8823,55.753 19.8823,55.975L 19.8645,56.0701L 19.9002,56.0879L 19.9002,56.1474L 19.9358,56.1058L 20.0131,56.1236C 20.2351,56.1236 20.6989,55.8888 21.4045,55.419L 24.1457,53.3765L 28.0849,50.1151L 33.0945,45.7775L 39.8016,52.5025C 40.6579,51.6462 41.2961,50.6731 41.7163,49.5829C 42.1365,48.4928 42.3466,47.367 42.3466,46.2056C 42.3466,45.4603 42.2603,44.729 42.0879,44.0115C 41.9155,43.294 41.6548,42.6003 41.306,41.9304L 49.2202,34.0161C 50.0011,34.3372 50.7939,34.4978 51.5986,34.4978C 52.4192,34.4978 53.219,34.3362 53.9979,34.0132C 54.7768,33.6901 55.4894,33.2015 56.1355,32.5475 Z " />
<Setter TargetName="MyPin" Property="Fill" Value="Gray" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<StackPanel Orientation="Vertical" HorizontalAlignment="Center">
<CheckBox Height="35"
Style="{StaticResource styleCustomCheckBox}"
Content="MySolution1" />
<CheckBox Height="35"
Style="{StaticResource styleCustomCheckBox}"
Content="MySolution2" />
</StackPanel>
Output
I'm developing an app where the entire UI is sized by percentage. Therefore the height of my ListBoxItems needs to be controlled by that too. But i'm having some problems getting it to work.
ListBoxStyle:
<Style x:Key="ListBoxStyle" TargetType="{x:Type ListBox}">
<Setter Property="Stylus.IsPressAndHoldEnabled" Value="False" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBox}">
<Border BorderBrush="{StaticResource ControlBorderBrush}"
Background="{StaticResource ControlBackgroundBrush}">
<ScrollViewer ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<VirtualizingStackPanel IsItemsHost="True" VirtualizingStackPanel.VirtualizationMode="Recycling">
</VirtualizingStackPanel>
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
ListBoxItemStyle:
<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="Stylus.IsPressAndHoldEnabled" Value="False" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="Foreground" Value="{StaticResource ControlTextNormalBrush}"/>
<Setter Property="BorderThickness" Value="1,0,1,1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Name="Border"
Height="Height="{Binding Converter={StaticResource PercentageConverter}, Path=ActualHeight, ConverterParameter=10}""
SnapsToDevicePixels="true"
BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{StaticResource ControlItemBorderBrush}"
Background="{StaticResource ControlItemNormalBackgroundBrush}">
<ContentPresenter/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="Border" Property="Background" Value="{StaticResource ControlItemHoverBackgroundBrush}"/>
</Trigger>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="Border" Property="Background" Value="{StaticResource ControlItemSelectedBackgroundBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter Property="Foreground" Value="{StaticResource ControlTextSelectedBrush}"/>
</Trigger>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Converter= {StaticResource FirstItemConverter}}" Value="True">
<Setter Property="BorderThickness" Value="1,1,1,1" />
</DataTrigger>
</Style.Triggers>
</Style>
I have a PercentageConverter that i use other places to, it works like a charm. But it looks like in this scenario, that it is never called or does not have an effect. The height of the items is larger than the ListBox itself.
Using a UniformGrid as ItemsPanel for the ListBox will evenly space all items:
<ListBox>
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<!-- Change to Rows="1" if you want a horizontal layout -->
<UniformGrid Columns="1" />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.Items>
<ListBoxItem>Item 1</ListBoxItem>
<ListBoxItem>Item 2</ListBoxItem>
<ListBoxItem>Item 3</ListBoxItem>
<ListBoxItem>Item 4</ListBoxItem>
<ListBoxItem>Item 5</ListBoxItem>
<ListBoxItem>Item 6</ListBoxItem>
<ListBoxItem>Item 7</ListBoxItem>
<ListBoxItem>Item 8</ListBoxItem>
</ListBox.Items>
</ListBox>
Now 8 items will each have 12.5% height (1/8) and 100% width (1/1). This page explains the workings of a UniformGrid.
I am new to WPF. I want to show custom tool tip when a error occurs in TextBox. So I have used Style as shown below:
<Style x:Key="textBoxInError" TargetType="{x:Type TextBox}">
<Style.Triggers>
<Trigger Property="Validation.HasError" Value="true">
<Setter Property="ToolTip">
<Setter.Value>
<ToolTip Placement="Top">
<Border Margin="-4,0,-4,-3" Padding="2" Background="Red">
<Border.BitmapEffect>
<OuterGlowBitmapEffect></OuterGlowBitmapEffect>
</Border.BitmapEffect>
<Label Foreground="White" FontWeight="Bold" Content="{Binding RelativeSource={RelativeSource AncestorType={x:Type TextBox}}, Path=(Validation.Errors)[0].ErrorContent}"></Label>
</Border>
</ToolTip>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
Above code is not showing error message in ToolTip. Could you please help m ein this regard? Any help would be highly appreciable.
You should change your current style with the following style (msdn):
<Style x:Key="textBoxInError" TargetType="{x:Type TextBox}">
<Style.Triggers>
<Trigger Property="Validation.HasError" Value="true">
<Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource Self}, Path=(Validation.Errors)[0].ErrorContent}"/>
</Trigger>
</Style.Triggers>
</Style>
And you should create style for ToolTip:
<Style TargetType="ToolTip">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="HasDropShadow" Value="True"/>
<Setter Property="Placement" Value="Top" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToolTip">
<Border Name="Border" Margin="-4,0,-4,-3" Padding="2" Background="Red">
<Border.BitmapEffect>
<OuterGlowBitmapEffect></OuterGlowBitmapEffect>
</Border.BitmapEffect>
<ContentPresenter
Margin="4"
HorizontalAlignment="Left"
VerticalAlignment="Top"
TextElement.Foreground="White" TextElement.FontWeight="Bold"
/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="HasDropShadow" Value="true">
<Setter TargetName="Border" Property="CornerRadius" Value="4"/>
<Setter TargetName="Border" Property="SnapsToDevicePixels" Value="true"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Example of usage:
<TextBox Text="{Binding MyText, ValidatesOnDataErrors=True, NotifyOnValidationError=True, UpdateSourceTrigger=PropertyChanged}"
Style="{StaticResource textBoxInError}"
/>
You should also replace
Path=(Validation.Errors)[0].ErrorContent
with
Path=(Validation.Errors).CurrentItem.ErrorContent}
because in your case you'll get an silent ArgumentOutOfRangeException when there are no validation errors. Don't forget to implement IDataErrorInfo or INotifyDataErrorInfo.