Datagrid TextColumn does not get styled

[timunie]

Describe the bug
the DataGridTextColumn does not get stlyed in the editing mode.

To Reproduce
Have a look at the demo app

Expected behavior
the TexBox and its ContextMenu should be styled according to the selected theme

Screenshots
see above

Environment(please complete the following information):

• MahApps.Metro version latest alpha
• OS: Windows 7
• Visual Studio 2019
• .NET Framework tested with different

Happy coding
Tim

[punker76]

@timunie This doesn't work in v1.6.5 either.

[timunie]

@punker76 I had a deeper look into this. The EditingElement is a TextBox based on the default Windows TextBox. But we can set our own Style by setting:

<DataGridTextColumn Binding="{Binding Title}"
                    EditingElementStyle="{StaticResource MahApps.Styles.TextBox.Borderless}"
                    Header="Title" />

unfortunatally one has to set this manually because you cannot have a Style for DataGridTextColumn 😞 because M 💲 does not support this.

I see two ways:

1. Provide a Style e.g. MahApps.Styles.TextBox.Borderless and let the user implement it on every DataGridTextColumn

2. Having an AttachedProperty for DataGrid which catches the PreparingCellForEdit event:

private void DataGrid_PreparingCellForEdit(object sender, DataGridPreparingCellForEditEventArgs e)
{
    if (e.EditingElement is TextBox textBox && Application.Current.TryFindResource("MahApps.Styles.TextBox.Borderless") is Style style)
    {
        textBox.SetCurrentValue(TextBox.StyleProperty, style);
    }
}

The result would look like this:

What do you think which way we should go?