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WPF DataGrid - SelectedItem not changing on FullRow selection outside text [duplicate]

This question already has an answer here:
DataGrid row selection not working when padding is added to cells
(1 answer)
Closed 4 years ago.
I'm building a Datagrid that has rows with height=40. On a row selection, the program opens a new tab with a User Control specific to that item.
When I click anywhere in the row that's outside of the cell contents (Red boxes in this image), The event fires but 'CurrentItem' does not get updated.
Essentially, the row only gets selected if the cell contents are clicked. Has anyone else dealt with this, and have a solution for what's going on?
Here's my styling:
<DataGrid Name="MachinesGrid" ItemsSource="{Binding MainData.Machines}">
<DataGrid.Style>
<Style TargetType="DataGrid">
<Setter Property="SelectionMode" Value="Single" />
<Setter Property="SelectionUnit" Value="FullRow" />
<Setter Property="AutoGenerateColumns" Value="False" />
<Setter Property="ColumnWidth" Value="Auto" />
<Setter Property="CanUserAddRows" Value="False" />
<Setter Property="Background" Value="{StaticResource BrushBackground}" />
<Setter Property="RowBackground" Value="{StaticResource BrushGreyMid}" />
<Setter Property="AlternatingRowBackground" Value="{StaticResource BrushGreyDark}" />
<Setter Property="GridLinesVisibility" Value="None" />
<Setter Property="ColumnHeaderStyle">
<Setter.Value>
<Style TargetType="DataGridColumnHeader">
<Setter Property="Background" Value="{StaticResource BrushBlue}" />
<Setter Property="Foreground" Value="{StaticResource BrushWhite}" />
<Setter Property="Height" Value="40" />
<Setter Property="FontWeight" Value="SemiBold" />
</Style>
</Setter.Value>
</Setter>
<Setter Property="CellStyle">
<Setter.Value>
<Style TargetType="DataGridCell">
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="Foreground" Value="{StaticResource BrushWhite}" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
</Style>
</Setter.Value>
</Setter>
<Setter Property="RowStyle">
<Setter.Value>
<Style TargetType="DataGridRow">
<Setter Property="Height" Value="40" />
<EventSetter Event="MouseLeftButtonUp" Handler="EventSetter_OnHandler" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="{StaticResource BrushGreyLite}" />
</Trigger>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="{StaticResource BrushBlue}" />
</Trigger>
</Style.Triggers>
</Style>
</Setter.Value>
</Setter>
</Style>
</DataGrid.Style>

As far as I know your problem is that selection is initially triggered in DataGridCell, by setting
<Setter Property="VerticalAlignment" Value="Center" />
your are telling that DataGridCell should vertically centered within a DataGridRow which leads to some space top and bottom which is not part of the DataGridCell and therefore not triggering any selection.
To solve this you have to set VerticalAlignment to Stretch(default) but then your content isn't centered anymore, for this you have to override the ControlTemplate of DataGridCell:
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
</ControlTemplate>
Now you can set VerticalContentAlignment and HorizontalContentAlignment on DataGridCell to align your content.
Your DataGridCell-Style should then look like this
<Style TargetType="DataGridCell">
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="Foreground" Value="{StaticResource BrushWhite}" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

How to add column header gripper to a custom style of column header in ListView in WPF?

So, this is my style. How I can add a gripper to it?
I did not find a way to do it :с
<Style x:Key="CustomHeaderStyle" TargetType="{x:Type GridViewColumnHeader}">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="{DynamicResource ForegroundBrush}"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="FontFamily" Value="Segoe UI" />
<Setter Property="FontSize" Value="12" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GridViewColumnHeader}">
<Border BorderThickness="1,1,1,1" BorderBrush="{DynamicResource AccentBrushWithLowOpacity}" Background="Transparent">
<TextBlock x:Name="ContentHeader" Text="{TemplateBinding Content}" Width="{TemplateBinding Width}" TextAlignment="Center" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

You edited them out yourself my friend.
You can find the default Style and Template here:
https://msdn.microsoft.com/en-us/library/ff506248(v=vs.110).aspx

remove blue highlight on buttons wpf

I am making a WPF project. While running the application, as I take my cursor to a button, it gets highlighted by blue color filled inside it.
Now, I want to remove this highlight...
How do I do so?

The link isn't working for me, so I can't see exactly what you are getting at, but I assume that you're trying to change that default blue-ish gradient. You need to override the template for the button in a style, and then you can customize it to look however you want. You can't just set the background color or use triggers to change it without overriding the template, because the default template has some extra stuff in it to show that gradient effect.
Here is an example of a button I have used before that is fairly straightforward. This example uses a trigger to change the foreground color of the button when it is pressed, but will never change the background color.
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="White"/>
<Setter Property="FontWeight" Value="SemiBold"/>
<Setter Property="Foreground" Value="{StaticResource BrushBtnText}"/>
<Setter Property="Margin" Value="8,4,8,4"/>
<Setter Property="Padding" Value="6"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="BorderBrush" Value="{StaticResource BrushBorderLight}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Margin="{TemplateBinding Margin}"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Padding="{TemplateBinding Padding}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Foreground" Value="{StaticResource BrushBtnText}"/>
</Trigger>
</Style.Triggers>
</Style>
Also, if you're interested, here is what the button's default template is:
<Style TargetType="{x:Type Button}">
<Setter Property="FocusVisualStyle" Value="{StaticResource ButtonFocusVisual}"/>
<Setter Property="Background" Value="{StaticResource ButtonNormalBackground}"/>
<Setter Property="BorderBrush" Value="{StaticResource ButtonNormalBorder}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Themes:ButtonChrome x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" RenderMouseOver="{TemplateBinding IsMouseOver}" RenderPressed="{TemplateBinding IsPressed}" RenderDefaulted="{TemplateBinding IsDefaulted}" SnapsToDevicePixels="true">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Themes:ButtonChrome>
<ControlTemplate.Triggers>
<Trigger Property="IsKeyboardFocused" Value="true">
<Setter Property="RenderDefaulted" TargetName="Chrome" Value="true"/>
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="true">
<Setter Property="RenderPressed" TargetName="Chrome" Value="true"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="#ADADAD"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Actually, I found the thing where I was going wrong. Whenever my pointer goes to a button, does not change the background of the button or even the foreground of the button, but it changes the background of the border.
So, while overwriting the button style, actually the border of the background has to be overwritten and not the button foreground or the background.
Here is the answer to this question : How to Disable MouseOver Effects

Remove default Hover Blue color in a Wpf button [duplicate]

I'm trying to disable the MouseOver effect on buttons, or at least change the colour of it, in WPF.
I'm using the following style:
<Style x:Key="Borderless" TargetType="{x:Type Button}">
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Button Background="{TemplateBinding Control.Background}"
Focusable="False">
<ContentPresenter
Margin="{TemplateBinding Control.Padding}"
HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding Control.VerticalContentAlignment}"
SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}"
ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"
RecognizesAccessKey="True"
Content="{TemplateBinding ContentControl.Content}" />
</Button>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
in Window.Resources, which I thought would override all the default behaviours. But it doesn't.
Any suggestions?

Look what your control template boils down to:
<ControlTemplate TargetType="{x:Type Button}">
<Button>
<ContentPresenter/>
</Button>
</ControlTemplate>
You're saying, "I want to replace the look of my button with... a button." The usage of the ControlTemplate is to replace the visual tree of a control. So you are replacing the visual tree of the existing button with another button. If you want to start a button from scratch, try using the SimpleStyles button:
<Style TargetType="{x:Type Button}">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="MinHeight" Value="23"/>
<Setter Property="MinWidth" Value="75"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Name="Border" CornerRadius="2" BorderThickness="1"
Background="#C0C0C0"
BorderBrush="#404040">
<ContentPresenter Margin="2"
HorizontalAlignment="Center"
VerticalAlignment="Center"
RecognizesAccessKey="True"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsKeyboardFocused" Value="true">
<Setter TargetName="Border"
Property="BorderBrush" Value="#202020" />
</Trigger>
<Trigger Property="IsDefaulted" Value="true">
<Setter TargetName="Border"
Property="BorderBrush" Value="#202020" />
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="Border"
Property="Background" Value="#808080" />
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter TargetName="Border"
Property="Background" Value="#E0E0E0" />
<Setter TargetName="Border"
Property="BorderBrush" Value="#606060" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="Border"
Property="Background" Value="#EEEEEE" />
<Setter TargetName="Border"
Property="BorderBrush" Value="#AAAAAA" />
<Setter Property="Foreground" Value="#888888"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Notice that this template creates a button the simplest possible way: a border that contains the button content. It does not use another button embedded inside the template.

How to tell if text it ContentProvider has been edited?

I've got DataGrid with several DataGridTextColumn's, one of which is editable.
I need to intercept TextChanged event for the cell that is being edited.
I've tried editing style and adding
<EventSetter Event="TextChanged" Handler="TaskDescription_TextChanged"/>
but I'm getting
Cannot find the Style Event 'TextChanged' on the type 'System.Windows.Controls.DataGridCell'
Is there an easy way to get notified of the text change in DataGridTextColumn except by Two-Way binding?
Here's the XAML code:
<Style x:Key="CenteredTextColumn" TargetType="{x:Type DataGridCell}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Grid Height="30">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<ContentPresenter VerticalAlignment="Center" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="VerticalAlignment" Value="Stretch"/>
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="Foreground" Value="Black"/>
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="{StaticResource SelectedCellBackground}"/>
<Setter Property="Foreground" Value="White"/>
<!--<Setter Property="BorderBrush" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>-->
</Trigger>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<!--<Setter Property="BorderBrush" Value="{DynamicResource {x:Static DataGrid.FocusBorderBrushKey}}"/>-->
</Trigger>
<Trigger Property="IsEditing" Value="True">
<Setter Property="Background" Value="Transparent"/>
</Trigger>
</Style.Triggers>
</Style>
and the EventSetter:
<Style x:Key="ProjectInfoEditeableCell" TargetType="{x:Type DataGridCell}" BasedOn="{StaticResource CenteredTextColumn}">
<EventSetter Event="TextChanged" Handler="TaskDescription_TextChanged"/>
</Style>