Any elegant way to override the style of Control, specifically, the DataGridRow?

[oloopy]

I tried to hide some of the rows in the DataGrid through DataBinding by changing the RowStyle.

<DataGrid.RowStyle>
    <Style TargetType="DataGridRow">
        <Setter Property="Visibility" Value="{Binding Path=Visibility}"/>
    </Style>
</DataGrid.RowStyle>

While adding the code above into routine would prevent other predefined RowStyle developed by Mahapps work correctly.

What I do now is to copy all the code related to the DataGridRow from Controls.DataGrid.xaml and add them with the above code together into my routine. This time works.

I would like to know if there is an elegant way to change the style without copying&pasting a bunch of code from the source code.

Thanks!

[TCIT-rs]

I had the same problem while adding a ContextMenu to my row. To keep the RowStyle I based the row on the default style:

<DataGrid.RowStyle>
    <Style TargetType="DataGridRow" BasedOn="{StaticResource {x:Type DataGridRow}}">
         <Setter Property="ContextMenu" Value="{StaticResource RowMenu}" />
     </Style>
</DataGrid.RowStyle>

Hope this helps!

[oloopy]

Thanks @TCIT-rs
I did try your code with BasedOn syntax but the result still is not the MahApps one in my routine. Now the code is

<DataGrid.RowStyle>
    <Style TargetType="DataGridRow" BasedOn="{StaticResource {x:Type DataGridRow}}">
        <Setter Property="Visibility" Value="{Binding Path=Visibility}"/>
    </Style>
</DataGrid.RowStyle>

Did I miss something except for BasedOn?

[ydanila]

Have same problem with overriding default row style. Even if style body is empty (without setters) it brokes selected row style - it becomes empty.

[guibirow]

You should use BasedOn="{StaticResource {x:Type MetroDataGridRow}}"

You forgot the Metro before the style name

[oloopy]

@guibirow Could you provide us with more details? I got the error below when using your code implemented in either MetroWindow or UserControl.

<DataGrid>
    <DataGrid.RowStyle>
        <Style TargetType="DataGridRow" BasedOn="{StaticResource {x:Type MetroDataGridRow}}">
            ......
        </Style>
    </DataGrid.RowStyle>
</DataGrid>

Error   1   MetroDataGridRow is not supported in a Windows Presentation Foundation (WPF) project.

[guibirow]

Please do like This. This sample I used to center a cell content, The similar approach you do with Row:

• Create the style to apply at Grid

 <Controls:MetroWindow.Resources>
    <Style x:Key="CenterAlignCell" TargetType="{x:Type DataGridCell}" BasedOn="{StaticResource MetroDataGridCell}">
        <Setter Property="FrameworkElement.HorizontalAlignment" Value="Center"/>
    </Style>
</Controls:MetroWindow.Resources>

• Set the style at Grid Cell

<DataGrid> <!-- You must add RowStyle Here-->
         <DataGrid.Columns>
                <DataGridTextColumn Header="QTY" Binding="{Binding QTY}" CellStyle="{StaticResource CenterAlignCell}" ></DataGridTextColumn>

-- This works like a charm, I took from a running example. you can add this style at a shared dictionary to reuse at other windows

[oloopy]

@guibirow Thanks! It works great.

So it looks like we should double inherit. In my case, it would be,

<UserControl.Resources>
    <Style x:Key="MyDataGridRowStyle" TargetType="DataGridRow" BasedOn="{StaticResource MetroDataGridRow}">
        <Setter Property="Visibility" Value="{Binding Path=Visibility}"/>
    </Style>
    <!--Compiler may prompt *Resource is not found*. That's OK.-->
</UserControl.Resources>

<DataGrid.RowStyle>
    <Style TargetType="DataGridRow" BasedOn="{StaticResource {x:Type MyDataGridRowStyle}}"/>
</DataGrid.RowStyle>

[guibirow]

Yesterday I had a problem like yours, I think it's related with DataGridRow, because DataGridCell style doesn't need this Workaround

[guibirow]

Maybe it's a bug,
Yesterday I had a problem like yours, I think it's related with DataGridRow, because DataGridCell style doesn't need this Workaround,

I had to create a AlternationRowCount, but doesn't work with MetroDataGridRow.

[guibirow]

I found the same problem related before: #511

[oloopy]

@guibirow Let's have a check on that. Thanks.

[oloopy]

@guibirow In addition, I tried to add tooltips onto the DataGridColumnHeader. Using your tip would works fine, while like the post #511 said, setting the DataGridStyle directly on it would not make it.

[guibirow]

I figured out what's happening.
When we create a BasedOn Style, it doesn't inherit Triggers.
The Metro Style uses a lot of triggers to change colors and loses them when inherited

[Flem100]

Thank you so much.The double inherit worked for me.