Hello,

I have a window that contains a RadRibbonView:

<telerik:RadRibbonView x:Name="PART_MainMenu" BackstageClippingElement="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=telerik:RadDockPanel}}"  IsMinimizable="true">
            <telerik:RadRibbonView.Backstage>
                <telerik:RadRibbonBackstage x:Name="backstage" BackstagePosition="Office2013" Background="{StaticResource ATS_Brush_Gray240}">                                    <telerik:RadRibbonBackstageItem Header="Informations">
                        <Grid>
                            <TextBlock Text="Log-out" Background="Transparent" HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="DarkSlateGray"/>
                        </Grid>
                    </telerik:RadRibbonBackstageItem>                                       
                </telerik:RadRibbonBackstage>
            </telerik:RadRibbonView.Backstage>

</telerik:RadRibbonView>

I display a simple text "Log-out" in a single telerik:RadRibbonBackstageItem.

I change by code the property Thread.CurrentThread.CurrentUICulture to an arabic culture.

I change equally by code the property FlowDirection of the window to the value RightToLeft.

Because of property value inheritance, this property is supposed to be automatically changed for all child elements.

However, the text is mirrored (see file in attachment).

How can we fix that issue ?

Thanks,

Alexandre

I'm making a custom behavior for Telerik's RadGridView.
When this behavior is attached and its `PropertyName` is set to same property as specified by
DataMemberBinding value of some of the GridViewCheckBoxColumn of the grid, then toggling the checkbox in that column will apply same checkbox state to all selected rows (but only to the same column).  

That happens in the `ApplyToAllSelected` method, namely in `gvcb.SetCurrentValue(GridViewCheckBox.IsCheckedProperty, isChecked);` line. The visuals are working as expected, and all checkbox values are updated on screen.

**The Problem** is that the binding source is not updated for those rows. Only for the one where click happened. `GridViewCheckBox.IsChecked` dependency property does not seem to be bound directly to the datacontext's property, so `gvcb.GetBindingExpression(GridViewCheckBox.IsChecked)` returns `null`.

**The Question**: how to update source after setting checkbox state?


```
public sealed class CheckAllSelectedBehavior : Behavior<RadGridView>
    {
        public event EventHandler Toggled;

        public string PropertyName { get; set; }

        protected override void OnAttached()
        {
            base.OnAttached();

            this.AssociatedObject.PreparingCellForEdit += this.AssociatedObject_PreparedCellForEdit;
            this.AssociatedObject.CellEditEnded += this.AssociatedObject_CellEditEnded;
        }

        protected override void OnDetaching()
        {
            this.AssociatedObject.PreparingCellForEdit -= this.AssociatedObject_PreparedCellForEdit;
            this.AssociatedObject.CellEditEnded -= this.AssociatedObject_CellEditEnded;
            base.OnDetaching();
        }

        private void AssociatedObject_CellEditEnded(object sender, GridViewCellEditEndedEventArgs e)
        {
            if (e.Cell.Column.UniqueName == this.PropertyName && e.EditingElement is CheckBox cb)
            {
                cb.Checked -= this.Cb_Checked;
                cb.Unchecked -= this.Cb_Unchecked;
            }
        }

        private void AssociatedObject_PreparedCellForEdit(object sender, GridViewPreparingCellForEditEventArgs e)
        {
            if (e.Column.UniqueName == this.PropertyName && e.EditingElement is CheckBox cb)
            {
                cb.Checked += this.Cb_Checked;
                cb.Unchecked += this.Cb_Unchecked;
            }
        }

        private void Cb_Unchecked(object sender, System.Windows.RoutedEventArgs e)
        {
            this.ApplyToAllSelected(false);
        }

        private void Cb_Checked(object sender, System.Windows.RoutedEventArgs e)
        {
            this.ApplyToAllSelected(true);
        }

        private void ApplyToAllSelected(bool isChecked)
        {
            foreach (var item in this.AssociatedObject.SelectedItems)
            {
                var row = this.AssociatedObject.GetRowForItem(item);
                var cell = row.GetCellFromPropertyName(this.PropertyName);
                if (cell.Content is GridViewCheckBox gvcb)
                {
                    gvcb.SetCurrentValue(GridViewCheckBox.IsCheckedProperty, isChecked);
                }
            }

            this.Toggled?.Invoke(this, EventArgs.Empty);
        }
    }
```

This is a copy of [StackOverflow Thread](https://stackoverflow.com/questions/62192784/programatically-change-state-of-gridviewcheckboxcolumn-row-with-updating-binding)

Very simple question. How do I statically change content? I figured something like this example:

But it doesn't work, saying that content is set multiple times.

Hello,

I have a .NET Core WPF application with the following statement as the first statement of the application:

(without this statement, the display is ugly when the application is in full screen, as you can see in your own Report Designer...)

The problem is that, when the application is in full screen mode, it seems that the ribbon is too wide: the first icon at left is near the window edge and the minimize button at the right is partially hidden.

This doesn't appear with the Office2013 theme.

I have created a radcombobox inside my radgridview and bound some text to it which works fine, but I can't seem to get it to update the database for the selected row when I change the selection of the combo box?

My XAML:

My code-behind:

My view model

sdf

Any suggestions?

I have a weird problem with a RadWIndow that is to replace the regular Window.

It's showing inside what appears to be a browser and I have no idea how to fix this.

Any ideas?

MainWindow.xaml

Hello,

We're working on a WPF application that use Telerik wpf UI component version 2012.1.0326.40. 

So we wonder if you could easily upgrade to the lastest  WPF version?

Regards 

Hello,

I have a RadGridVeiw table with some values, i need to update certain cell values when the user clicks a button.

So far i have:

The value is updated in terms of code, but visually my Radgridview displays the old value.

can anyone help me?