I'm currently working with MVVM in WPF, I installed MahappsMetro in my project. I want to change the default DataGrid style, without losing all the properties of MetroDataGrid style (Style for DataGrid from MahappsMetro).
I simply want to change some Triggers as IsMouseOver and IsSelected, I tried doing this:
I defined this Style in App.xaml
<Style x:Key="TransparentDataGrid" TargetType="{x:Type DataGrid}" BasedOn="{StaticResource MetroDataGrid}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGrid}">
<DataGrid>
<DataGrid.RowStyle>
<Style TargetType="{x:Type DataGridRow}">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Transparent" />
</Trigger>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="Black" />
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
<DataGrid.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Style.Triggers>
<Trigger Property="DataGridCell.IsSelected" Value="True">
<Setter Property="Background" Value="Transparent" />
<Setter Property="BorderBrush" Value="Transparent" />
<Setter Property="Foreground" Value="Black" />
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.CellStyle>
</DataGrid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
And I bind this Style, where I need it
Style="{DynamicResource TransparentDataGrid}"
But I get the exception :
A first chance exception of type 'System.Windows.Markup.XamlParseException' occurred in PresentationFramework.dll
Also I tried :
I created the style in MainViewModel.xaml but I don't know how to bind this style to other views.
to derive from existing style for the controls you need to specify the type as the key in based on attribute
<Style x:Key="TransparentDataGrid" TargetType="{x:Type DataGrid}" BasedOn="{StaticResource {x:Type MetroDataGrid}}">
<Setter Property="Template">
<Setter.Value>
...
if above does not work then do prefix with correct namespace to MetroDataGrid eg mapp:MetroDataGrid where mapp points to MahappsMetro assembly
eg
<Application x:Class="CSharpWPF.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml"
xmlns:mapp="clr-namespace:MahApps.Metro.Controls">
<Application.Resources>
<Style x:Key="TransparentDataGrid" TargetType="{x:Type DataGrid}" BasedOn="{StaticResource {x:Type mapp:MetroDataGrid}}">
<Setter Property="Template">
<Setter.Value>
...
</Application.Resources>
use the correct assembly above is just an example
Related
I have some styles and templates in App.Xaml so I can acces them thru multiple UserControls.
EDIT : This is within the app.Xaml:
One of the Styles are :
<Application x:Class="BaseRefence.generatingAnnotation.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:BaseRefence.generatingAnnotation"
xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero2"
StartupUri="MainWindow.xaml">
<Application.Resources>
<Style x:Key="ComboBoxStyleRounded" TargetType="{x:Type ComboBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Grid>
<Border CornerRadius="25"
BorderThickness="1,1,2,2">
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
<Setter Property="Background" Value="{StaticResource ComboBox.Static.Background}"/>
<Setter Property="BorderBrush" Value="#42536b"/>
<Setter Property="Foreground" Value="Black"/>
<Setter Property="BorderThickness" Value="1,1,2,2"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="Padding" Value="6,3,5,3"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
<Setter Property="ScrollViewer.PanningMode" Value="Both"/>
<Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
<Setter Property="Template" Value="{StaticResource ComboBoxTemplate}"/>
<Style.Triggers>
<Trigger Property="IsEditable" Value="true">
<Setter Property="IsTabStop" Value="false"/>
<Setter Property="Padding" Value="2"/>
<Setter Property="Template" Value="{StaticResource ComboBoxEditableTemplate}"/>
</Trigger>
</Style.Triggers>
</Style>
</Application.Resources>
</Application>
And in de UserControl.Xaml I have:
<ComboBox ItemsSource="{Binding ViewFamilyTypesInProject}"
SelectedItem="{Binding SelectedViewFamilyType, Mode=TwoWay}"
Grid.Row="1"
Grid.Column="1"
Margin="10 5"
MaxHeight="40"
Style="{DynamicResource ComboBoxStyleRounded}">
Within the designer everything works great, it shows correctly and all.
However, whenever I build and run my code, it gives the message and it does not override the style but keeps the default style.
System.Windows.ResourceDictionary Warning: 9 : Resource not found; ResourceKey='ComboBoxStyleRounded'
My experience: I frequently have same issues (using VS 16.6.2, .NET Core 3.1 and WPF).
Simply close Visual Studio and restart it: 98% of the times error disappears (will reappear sometime in the future).
You have an invalid Style. It may compile, as the XAML is syntactically correct, but the semantics of the markup are wrong. Since you are referencing the Style using DynamicResource the error occurs at runtime. But I wonder why don't get a XAML Designer error.
You are setting the ComboBox.Template property twice. Moreover and most important, the first ControlTemplate at the top of the Style is targeting the wrong type TextBox:
<ControlTemplate TargetType="{x:Type TextBox}">
<Grid>
<Border CornerRadius="25"
BorderThickness="1,1,2,2">
</Border>
</Grid>
</ControlTemplate>
The type must be of course <ControlTemplate TargetType="ComboBox">.
Since you are referencing a ControlTemplate resource later
<Setter Property="Template" Value="{StaticResource ComboBoxTemplate}" />
I think you want to remove the first ControlTemplate. If you want to change the appearance of the TextBox, you would need to override the complete ControlTemplate of the ComboBox.
You may should run Clean Solution and Rebuild Solution.
I'm currently on the design of my application (WPF), and I'm trying to change the design of the IsSelected of DatagridRow.
The XAML :
<Style TargetType="DataGridRow" BasedOn="{StaticResource {x:Type DataGridRow}}">
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Foreground" Value="{StaticResource ForegroundSelectedRow}"/>
<Setter Property="Background" Value="{StaticResource BackgroundSelectedRow}"/>
</Trigger>
</Style.Triggers>
</Style>
This code is working when I've the focus on my application, but when I click out of the view with the DataGrid, I lose the Foreground (it takes another color) but the Background is still up with the same...
I don't understand how just one can work, but not the other... Someone knows why ?
EDIT 1 :
I don't have any DataGrid.Resources. I set all my style in the App.xaml with this :
<Style x:Key="DataGridStyle" TargetType="DataGrid" BasedOn="{StaticResource {x:Type DataGrid}}">
<Setter Property="AlternationCount" Value="2"/>
<Setter Property="AutoGenerateColumns" Value="False"/>
<Setter Property="IsReadOnly" Value="True"/>
<Setter Property="CanUserSortColumns" Value="True"/>
<Setter Property="CanUserAddRows" Value="False"/>
</Style>
And I bind it to my DataGrid
<DataGrid ItemsSource="{Binding Collects}" Style="{StaticResource DataGridStyle}" ColumnHeaderStyle="{StaticResource DGHeaderMargin}"/>
You can change TargedType to DataGridCell instead DataGridRow (WPF 4.0)
<DataGrid.Resources>
<Style TargetType="{x:Type dg:DataGridCell}">
<Style.Triggers>
<Trigger Property="dg:DataGridCell.IsSelected" Value="True">
<Setter Property="Foreground" Value="{StaticResource ForegroundSelectedRow}"/>
<Setter Property="Background" Value="{StaticResource BackgroundSelectedRow}"/>
</Trigger>
</Style.Triggers>
</Style>
solution 2
<DataGrid.Resources>
<Style TargetType="DataGridRow">
<Style.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Red"/>
</Style.Resources>
</Style>
</DataGrid.Resources>
Thanks to M. Wiśnicki, I figured out !
If you want to have a properly design, you have to apply style on DataGridRow and DataGridCell, like this :
<Style TargetType="DataGridCell" BasedOn="{StaticResource {x:Type DataGridCell}}">
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Foreground" Value="{StaticResource ForegroundSelectedRow}"/>
</Trigger>
</Style.Triggers>
</Style>
<Style TargetType="DataGridRow" BasedOn="{StaticResource {x:Type DataGridRow}}">
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="{StaticResource BackgroundSelectedRow}"/>
</Trigger>
</Style.Triggers>
</Style>
I hope it will help some others developers :)
I'm relative new to WPF and I have check on several tutorials on how to style a DataGrid. All of them use the same examples but when I try to implement them into my project, came this annoying message.
This is the code I've been trying to implement, I got this from MSDN page:
<Window.Resources>
<!-- DataGrid style -->
<Style x:Key="DataGridStyle1" TargetType="{x:Type DataGrid}">
<Setter Property="ColumnHeaderStyle" Value="{DynamicResource ColumnHeaderStyle1}"/>
</Style>
<!-- DataGridColumnHeader style -->
<Style x:Key="ColumnHeaderStyle1" TargetType="DataGridColumnHeader">
<Setter Property="Height" Value="30"/>
<Setter Property="Background" Value="LightBlue"/>
<Setter Property="Foreground" Value="Blue"/>
<Setter Property="FontSize" Value="18" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="ToolTip" Value="Click to sort."/>
</Trigger>
</Style.Triggers>
</Style>
I'm using:
- C# Framework 4.5.1
- Blend for Visual Studio 2013
- Visual Studio 2013 (I got the error in both places).
All the imports and references are just fine.
I have check the solution properties and my Platform Target is "Any CPU"
My guess is this property might be deprecated for this control (DataGridColumnHeader).
Hope anyone could tell the proper way to acheive my goal.
Thanks in advance
It's trying to use a DynamicResource before it's defined.. Try swapping the Styles. Also, there's really no need for a DynamicResource here IMO, just change it to StaticResource.
<Window.Resources>
<!-- DataGridColumnHeader style -->
<Style x:Key="ColumnHeaderStyle1" TargetType="DataGridColumnHeader">
<Setter Property="Height" Value="30"/>
<Setter Property="Background" Value="LightBlue"/>
<Setter Property="Foreground" Value="Blue"/>
<Setter Property="FontSize" Value="18" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="ToolTip" Value="Click to sort."/>
</Trigger>
</Style.Triggers>
</Style>
<!-- DataGrid style -->
<Style x:Key="DataGridStyle1" TargetType="{x:Type DataGrid}">
<Setter Property="ColumnHeaderStyle" Value="{StaticResource ColumnHeaderStyle1}"/>
</Style>
</Window.Resources>
I am working in WPF with the MaterialDesign Toolkit and Dragablz.
I encountered a problem while trying to style a TabablzControl.
I already have style for the windows default TabControl and TabItem header, as shown in the picture:
http://i.imgur.com/2anl5rl.png
But when I change the default tabControl to TabablzControl, it turns into this:
http://i.imgur.com/bhaaMVy.png
Here are the window.resources:
<Style x:Key="mdTabControl" TargetType="TabControl">
<Setter Property="TextElement.Foreground" Value="{DynamicResource MaterialDesignBody}"/>
<Setter Property="Background" Value="{DynamicResource MaterialDesignPaper}"></Setter>
</Style>
<Style x:Key="mdTabHeader" TargetType="{x:Type TabItem}">
<Setter Property="Background" Value="{DynamicResource MaterialDesignPaper}"></Setter>
<Setter Property="Foreground" Value="{DynamicResource MaterialDesignBody}"></Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Grid>
<Border Name="Border" Margin="1,0,1,0" CornerRadius="3 3 0 0">
<ContentPresenter x:Name="ContentSite" VerticalAlignment="Center"
HorizontalAlignment="Center"
ContentSource="Header" Margin="10,2,10,2"
RecognizesAccessKey="True">
</ContentPresenter>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Panel.ZIndex" Value="100" />
<Setter TargetName="Border" Property="Background" Value="{StaticResource SecondaryAccentBrush}" />
<Setter Property="Foreground" Value="{StaticResource SecondaryAccentForegroundBrush}"/>
</Trigger>
<Trigger Property="IsSelected" Value="False">
<Setter Property="Panel.ZIndex" Value="100" />
<Setter TargetName="Border" Property="Background" Value="{StaticResource PrimaryHueMidBrush}" />
<Setter Property="Foreground" Value="{StaticResource PrimaryHueMidForegroundBrush}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="{StaticResource PrimaryHueDarkBrush}" />
<Setter Property="Foreground" Value="{StaticResource PrimaryHueDarkForegroundBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The error appears when I change the mdTabControl style targetType to:
TargetType="dbz:TabablzControl"
I want to keep the style I set to the TabControl, but with the added functionality of the TabablzControl
Any help will be appreciated
First thing to note, which is a general WPF characteristic, you are not using style inheritance correctly.
As you are using Material Design with Dragablz, if you are restyling the tab control itself, you must inherit from the Material Design style in the Dragablz assembly using BasedOn:
<Style x:Key="mdTabControl" TargetType="TabControl" BasedOn="{StaticResource MaterialDesignTabablzControlStyle}">
<Setter Property="TextElement.Foreground" Value="{DynamicResource MaterialDesignBody}"/>
<Setter Property="Background" Value="{DynamicResource MaterialDesignPaper}"></Setter>
</Style>
Again, with the tab header itself, you need to inherit from the relevant style:
<Style x:Key="mdTabHeader" TargetType="{x:Type TabItem}" BasedOn="{StaticResource MaterialDesignDragableTabItemStyle}">
. . .
</Style>
Note, that (depending you your App.xaml setup) you probably need to make sure the correct resource dictionary is included in the same XAML file. For example a more complete XAML might be:
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/Dragablz;component/Themes/materialdesign.xaml" />
</ResourceDictionary.MergedDictionaries>
<Style x:Key="NormalTabItemStyle" TargetType="{x:Type dragablz:DragablzItem}" BasedOn="{StaticResource MaterialDesignDragableTabItemStyle}">
<Setter Property="Width" Value="280" />
<Setter Property="Padding" Value="1" />
</Style>
. . .
</ResourceDictionary>
</Window.Resources>
Finally, as you are changing the TabItem style, you either need to the TabablzCOntrol style the correct style, or you could use it where you actually declare the TabablzControl itself:
<dragablz:TabablzControl ItemContainerStyle="{StaticResource mdTabHeader}" />
A good example of all this in action is in the SidePanels project in the demo solution at: https://github.com/ButchersBoy/DragablzSamplez
<Style TargetType="{x:Type dragablz:TabablzControl}" BasedOn="{StaticResource MaterialDesignTabablzControlStyle}"/>
I've tried to change style for mouseover event.
Here's my styles code:
<Window.Resources>
<Style x:Key="NavigationButton"
TargetType="{x:Type Button}">
<Setter Property="Background" Value="#295fa6"/>
<Setter Property="BorderBrush" Value="{x:Null}"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="{x:Null}"/>
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
and I used it in that way:
<Button x:Name="test"
Grid.Column="0""
Style="{StaticResource NavigationButton}">
<Image Source="Assets/imaaa.png" />
</Button>
and mouseover still has default color
you need to modify the ControlTemplate. To remove the default behaviour on the Button.
<Style x:Key="NavigationButton"
TargetType="{x:Type Button}">
<Setter Property="Background" Value="#295fa6"/>
<Setter Property="BorderBrush" Value="{x:Null}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="#295fa6">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Red"/>
<Setter Property="BorderBrush" Value="{x:Null}"/>
</Trigger>
</Style.Triggers>
</Style>