In our project we have updated Telerik UI for WPF to version 2020.2.617.

So, the existing Telerik dlls (NoXaml version) were updated via Nuget Package manager to 2020.2.617 version. 

However when I have updated the theme xaml files, I got the following errors:

As from the error I can see that `ThemeType` resource is missing and that is why application is crashing at runtime.

After investigating a bit I wasn't able to find this resource inside xaml files, which means that it is probably in some dll which is missing from the project.

Will much appreciate for any support!

Hi,

How can set text wrapping for the the displayed text of the MultiColumnComboBox control in XAML ?

Regards,
Hans

Hello

I have a cartesian chart that includes a barchart, which range is fixed and unique, and I have dynamic line series, which are user defined at run time (see attached screenshot).

Each lineseries is bound to a business objects that contains three properties: Color, which will be the color of the series, Code, which is a string that identifies the series, and Coll which is a collactiion of dates + decimals that make the series.

When I add the trackball functionality, I can see the bound values, but I would like to add the Code identifier, as otherwise user cannot tell which is which.

Thanks

Herald

------------------------------------------------------------------

<telerik:RadCartesianChart Grid.Row="1" Height="500" VerticalAlignment="Top">
            <telerik:RadCartesianChart.Resources>
                <DataTemplate x:Key="trackBallInfoTemplate">
                    <StackPanel Background="Wheat" Margin="3" Width="100">
                        <StackPanel Orientation="Horizontal">
                            <!--<TextBlock Text="{Binding Code}" FontWeight="Bold" />-->
                            <TextBlock Text="??? - " FontWeight="Bold" />
                            <TextBlock Text="{Binding DataPoint.Value, StringFormat=P2}" />
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>
            </telerik:RadCartesianChart.Resources>
            <telerik:RadCartesianChart.Behaviors>
                <telerik:ChartSelectionBehavior DataPointSelectionMode="None" />
                <!--<telerik:ChartTooltipBehavior/>-->
                <telerik:ChartTrackBallBehavior />
            </telerik:RadCartesianChart.Behaviors>
            <telerik:RadCartesianChart.HorizontalAxis>
                <telerik:DateTimeContinuousAxis GapLength="0.9" Visibility="Collapsed" ShowLabels="False" TickThickness="0" PlotMode="OnTicks"/>
            </telerik:RadCartesianChart.HorizontalAxis>
            <telerik:RadCartesianChart.VerticalAxis>
                <telerik:LinearAxis SmartLabelsMode="None" LabelFormat="P0" LabelStyle="{DynamicResource RagGridViewAxisLabel}"/>
            </telerik:RadCartesianChart.VerticalAxis>

            <telerik:RadCartesianChart.SeriesProvider>
                <telerik:ChartSeriesProvider Source="{Binding LineSeries}">
                    <telerik:ChartSeriesProvider.SeriesDescriptors>
                        <telerik:CategoricalSeriesDescriptor CategoryPath="Date" ValuePath="Value" ItemsSourcePath="Coll">
                            <telerik:CategoricalSeriesDescriptor.Style>
                                <Style TargetType="telerik:LineSeries">            
                                    <Setter Property="StrokeThickness" Value="2" />
                                    <Setter Property="Stroke" Value="{Binding Color, Converter={StaticResource colorToSolidColorBrushValueConverter}}"></Setter>
                                    <Setter Property="TrackBallInfoTemplate" Value="{StaticResource trackBallInfoTemplate}"></Setter>
                                </Style>
                            </telerik:CategoricalSeriesDescriptor.Style>
                        </telerik:CategoricalSeriesDescriptor>
                    </telerik:ChartSeriesProvider.SeriesDescriptors>
                </telerik:ChartSeriesProvider>
            </telerik:RadCartesianChart.SeriesProvider>


            <telerik:RadCartesianChart.Grid>
                <telerik:CartesianChartGrid MajorXLineDashArray="5 5" MajorYLineDashArray="5 5" MajorLinesVisibility="Y" />
            </telerik:RadCartesianChart.Grid>
            <telerik:RadCartesianChart.Series>
                <telerik:BarSeries CategoryBinding="Date" ValueBinding="Value" ItemsSource="{Binding MainFundChart}" TrackBallInfoTemplate="{StaticResource trackBallInfoTemplate}">
                    <telerik:BarSeries.PointTemplate>
                        <DataTemplate>
                            <Rectangle Width="10" Fill="Green" />
                        </DataTemplate>
                    </telerik:BarSeries.PointTemplate>
                </telerik:BarSeries>
            </telerik:RadCartesianChart.Series>
        </telerik:RadCartesianChart>

--------------------------------------------

public class LineSeriesItem
    {
        public string Code { get; set; }
        public ObservableCollection<ChartItem> Coll { get; set; }
        public System.Windows.Media.Color Color { get; set; }
    }

public class ChartItem
    {
        public DateTime Date { get; set; }
        public Decimal Value { get; set; }
    }

Hello.

I use RadGridView (2018.1.116.45).

I am create columns and set him binding in programm code as 

column = new GridViewDataColumn
                {
                    ColumnGroupName = args.ColumnDef.ColumnGroupName,
                 
                    DataMemberBinding = new Binding(args.ColumnDef.Member)
                    {
                        Mode = BindingMode.TwoWay,
                        UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
                    },
                    IsReadOnlyBinding = new Binding(args.ColumnDef.IsReadOnlyMember)
                    {
                        Converter = new NullToBooleanConverter {IsInverted = true}
                    },
                   
                    Header = args.ColumnDef.Header,
                    IsVisible = true
                };

If i set cell value from UI all right, but if i set value from code UI not update, only after i select cell and try input value, value which i set erly will be placed in UI cell.

I try update view by programm code as

 var oldCellInfo = MainGrid.CurrentCellInfo;
            var gridViewCellInfo = new GridViewCellInfo(sender, gridViewColumn);
            MainGrid.CurrentCellInfo = gridViewCellInfo;

            MainGrid.CurrentCell?.BeginEdit();
            MainGrid.CurrentCell?.CommitEdit();
            
            MainGrid.CurrentCellInfo = oldCellInfo;
            MainGrid.CurrentCell?.BeginEdit();

            MainGrid.UpdateLayout();

But this is not working...

How i can update UI?

Hi community,

I am using the current trial version of Telerik UI for Wpf.

I can not find getters to get a cell value of a calculated column, programmatically. Is there a way to find a simple cell value.

- Documentation of the RadGridView :

if ((decimal)radGridView1.Rows[0].Cells["UnitPrice"].Value > 10)

     radGridView1.Rows[0].Cells["UnitPrice"].Value = 10;

But when I try radGridView1.Rows... I have the message "No definition for Rows..."

So i can not use the documentation code

Thank you

Matthieu Meunier

I've been searching here and any other websites that show up in a search online for anything that seemed answer my question but haven't seen anything yet.

I'm looking for a way to prevent appointments from being automatically selected when they have been updated. My appointments are removed and re-added to their collection, which appears to be the only way to successfully update the UI per this forum. I think it was this post I found, for those who are curious - https://www.telerik.com/forums/update-ui-after-collection-of-appointment-change

My problem is this: background logic is updating appointments and when using the schedule the appointment selection is constantly changed to the last updated appointment. This makes selecting and interacting with other appointments difficult. I won't rule out that my implementation may be incorrect, but I believe I have done well so far thanks to this forum.

Hi

Nice work with the new Callout-control, exactly what I needed!

1)

Im looking at the documentation, and I have a hard time figuring out how to popup a button on a button clicked for MVVM approach 

(I have a (i)-symbol on a button for each row in my grid that should show a popup/callout with more information for that row)

2) 

Are there example on formatted callout content (newline and bold, mostly needed)

/Thanks in advance, Robert

Hello

I need a racombobox with checkbox with multiselect and "select all" option, so I used the example from this thread : https://www.telerik.com/forums/radcombobox-with-checkbox-with-multi-select-(using-mvvm)

It works well, but I need it into a radgridview which could have a scrollbar and in this case I got an excepetion when I use the scroll of the radgridview.

It's fire the event OnSelectedItemsPropertyChanged change and so the sub Transfer is called but as the collection changed the Transfer sub crach.

I tried to put the radcombobox into a stack panel in order to prevent firing of event but it doesn't work :(

Here the code :

crash on :

Do you have any Idea to fix these crashes ?

Thanks

Regards

J-Christophe