Questions on UI for WPF Forum

1 answer

126 views

I want to automatically put the card in edit mode when the user adds a new card

I don't see an easy way to do this. I Selected the added item in the view model and then sent a message to the view to get it to call the Begin Edit method, but that didn't cause the card to go into edit mode.

Even though I added an item to the list that was bound to the Items source of the RadCardView, I noticed when I made the below call (from the view code behind), the list of cardViewItems did not contain the newly added object that I added to the source. Not sure why it is not automatically updating the cardviewitems, as the itemsSource is bound to an Observable Collection.

IEnumerable<RadCardViewItem> cardViewItems = cardView.ChildrenOfType<RadCardViewItem>();

I think that when BeginEdit is called, it is not finding the CardViewItem and therefore it does nothing. Not sure how to fix that. Maybe there is a bug in the cardview class.

CardView

answered on 04 Dec 2023

1 answer

116 views

[Solved] Add new detail record in MasterDetail RadGridView

Hi,

I am trying to add new record into Details in Master Details RadGridView (Based on Telerik Demos/GridView/Editing/Entity Framework CRUD). I added option to add new detail record into master, in row details grid view new row with message "Click here to ad new item" appeared. After clicking on message an filling data in GridViewAddingNewEventArgs, I see new record in the details, but when I try to save it with dbContext.SaveChanges(), I've got message in output window about SQL update statement instead of insert (I always got the EntityFrameworkCore.DBUpdateConcurrencyException).

GridView

updated answer on 04 Dec 2023

0 answers

150 views

WPF: RadGridView Filter: Save Chosen Filters

g

GridView

updated question on 04 Dec 2023

0 answers

237 views

GridView with Dynamic ComboBox Column Header

Hello, Telerik

I want to create a feature with the following characteristics:

1. Use of the MVVM pattern.
2. The number of columns in the DataGridView is not fixed but dynamic. (Users can specify the number of columns as an option, allowing for dynamic changes.)
3. Only the first column's text is fixed, while the 2nd to nth columns are ComboBoxes, allowing users to select which columns they want to view.

For example, if a class has (name, age, gender, department, major, student number, average grade, highest grade, lowest grade) as fields,
'Name' is always shown in the first column as fixed data.
'Age' to 'Lowest Grade' are available as ComboBox options for users to select and view as they wish.

If n = 5, it could be displayed as follows:

1st | 2nd | 3rd | 4th | 5th
Name (Fixed) | Age | Gender | Major | Avg Score

<telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn Header="column 1" DataMemberBinding="{Binding data_1}"/>
                <telerik:GridViewDataColumn Header="column 2" DataMemberBinding="{Binding data_2}"/>
                <telerik:GridViewDataColumn Header="column .." DataMemberBinding="{Binding data_1}"/>
                <telerik:GridViewDataColumn Header="column n" DataMemberBinding="{Binding data_n}"/>

</telerik:RadGridView.Columns>

I searched all the SDK examples and forums, but I don't know how to write it.

Thank you in advance.

ComboBox

GridView

asked on 04 Dec 2023

0 answers

180 views

Selecting Step in code behind for RadStepProgressBar by Binding - No Visual Update

Hi, we are looking at using the RadStepProgressBar

in Xaml

  <telerik:RadStepProgressBar
x:Name="SystemStepProgressBar"
ItemsSource="{Binding Steps}"
SelectedItem="{Binding SelectedStep, Mode=TwoWay}">

We are binding to a collection of StepInfo as per example online

When we change the SelectedItem in code behind, this is not registering visually, even though the RadStepProgressBar.SelectedItem and SelectedIndex is as we expect the visual display does not change?

StepProgressBar

asked on 01 Dec 2023

1 answer

110 views

Issue with Alt-select with group definitions

I think I have found i bug with selection with Alt-key on RadScheduleView.

I use a WeekViewDefinition as my active view definition. When I select a square by holding Alt-key while dragging the selection breaks if I have any group descriptions defined.
I have a minor tick length of 15 minutes. When my selection reaches the last tick of any day (after 23:45) the selection jumps to next day close to the time where my selection started.

I am attaching a video that illustrates the problem.

If I dont have any group description on my RadScheduleView I dont get this problem.

Here is my schedule view detinition:

        <telerik:RadScheduleView
            x:Name="ScheduleView"
            AppointmentsSource="{Binding Appointments}"
            VisibleRangeChangedCommand="{Binding VisibleRangeChangedCommand}"
            VisibleRangeChangedCommandParameter="{Binding VisibleRange, RelativeSource={RelativeSource Self}}"
            SnapAppointments="True"
            TodayButtonVisibility="Hidden"
            IsInlineEditingEnabled="False"
            NavigationHeaderVisibility="Collapsed"
            SpecialSlotsSource="{Binding SpecialSlots}"
            FirstVisibleTime="0:00"
            ResourceTypesSource="{Binding ResourceTypes}"
            TimeRulerItemStyleSelector="{StaticResource TimeRulerItemStyleSelector}"
            AppointmentStyleSelector="{StaticResource AppointmentItemStyleSelector}"
            ToolTipTemplate="{StaticResource AppointmentToolTipTemplate}"
            GroupHeaderStyleSelector="{StaticResource SchemaGroupHeaderStyleSelector}"
            GroupHeaderContentTemplateSelector="{StaticResource SchemaGroupHeaderContentTemplateSelector}">
            
            <b:Interaction.Behaviors>
                <schedules:PreventCloseDialogBehavior/>
                <behaviors:PreventAddScheduleDialogException/>
                <behaviors:FastAppointmentAddBehavior Appointments="{Binding Appointments}"/>
                <behaviors:FilterAppointmentsBehavior/>
            </b:Interaction.Behaviors>
            
            <telerik:RadScheduleView.ActiveViewDefinition>
                <telerik:WeekViewDefinition
                    MinTimeRulerExtent="200"
                    TimerulerMajorTickStringFormat="{}{0:%H}:{0:mm}"
                    GroupHeaderDateStringFormat="{}{0:ddd}"
                    ShowWeekGroupHeaders="False"
                    MinorTickLength="15min"
                    Orientation="Horizontal"
                    StretchGroupHeaders="True"
                    FirstDayOfWeek="Monday"
                    VisibleDays="7" />
                
            </telerik:RadScheduleView.ActiveViewDefinition>
            
            <telerik:RadScheduleView.DragDropBehavior> 
                <behaviors:ScheduleDragDropBehavior />
            </telerik:RadScheduleView.DragDropBehavior> 
            <telerik:RadScheduleView.SlotSelectionBehavior> 
                <behaviors:ScheduleSlotSelectionBehavior/> 
            </telerik:RadScheduleView.SlotSelectionBehavior> 

            <telerik:RadScheduleView.GroupDescriptionsSource>
                <telerik:GroupDescriptionCollection>
                    <telerik:DateGroupDescription/>
                    <telerik:ResourceGroupDescription ResourceType="Schedules" />
                </telerik:GroupDescriptionCollection>
            </telerik:RadScheduleView.GroupDescriptionsSource>
        </telerik:RadScheduleView>

ScheduleView

answered on 01 Dec 2023

1 answer

142 views

PdfViewer doesnt react to the textfield beeing set to ReadOnly

Hey,

I have set my TextField to ReadOnly but the RadPdfViewer doesnt react to it. Im getting a pdf File that im importing using the telerik PdfFormatProvider after that im trying to set some of the fields to readOnly like this:

if (formField is TextBoxField textBox)
{
	if (field is not null)
	{
	
		textBox.Value = field.ViewValue(viewMode);
		if (field.VarType != 0)
			formField.IsReadOnly = true;
			
	}
}

Im sure its setting it because if i export it to a pdf the fields are set to ReadOnly but not in the Telerik PdfViewer

Thanks

Dominik

PDFViewer

answered on 01 Dec 2023

0 answers

158 views

RadPdfViewer: PDF Form Text Out of Place

We updated our WPF Telerik controls from 2021.3.1109 to 2023.3.1114 and now our RadPDFViewer is not displaying text on some PDF documents. Please see before and after images.

Before:

After:

The file is a form fill PDF document that has been flattened. This displays correctly in Acrobat, Acrobat Reader, Chrome and Edge.

We also opened the file the 2023.3.1114 PDFViewer demo with the same results.

PDFViewer

asked on 30 Nov 2023

0 answers

101 views

Hide YAxies

I want to hide YAxies when LineSeries is not showing.I have checkBoxes to show and hide LineSeries and property bool IsLineSeriesVisible.

<telerik:LineSeries ItemsSource="{Binding data, Mode=OneWay}" CategoryBinding="time" ValueBinding="value" >
                        <telerik:LineSeries.VerticalAxis>
                            <telerik:LinearAxis x:Name="yaxis" HorizontalLocation="Right" Title="{global:LocalizeKey TitleResKey, Default='value'}">
                                <telerik:LinearAxis.Style>
                                    <Style TargetType="telerik:LinearAxis">
                                        <Style.Triggers>
                                            <DataTrigger Binding="{Binding IsLineSeriesVisible}" Value="False">
                                                <Setter Property="Visibility" Value="Collapsed" />
                                            </DataTrigger>
                                        </Style.Triggers>
                                    </Style>
                                </telerik:LinearAxis.Style>
                            </telerik:LinearAxis>
                        </telerik:LineSeries.VerticalAxis>
                    </telerik:LineSeries>

And this is my xaml, dataTrigger is not working when i remove trigger it hiddes yAxis but when i try to add trigger to hide axies when series is not showing it doesn`t do anything

Chart

asked on 30 Nov 2023

0 answers

144 views

telerik:RadCartesianChart.Series.ScatterLineSeries increases application memory continuously while adding dynamic series datapoint at specific interval

Hello,

I am facing application crash issue with : Out of memory exception.

While analysing, we got to know that scatterDataPoint is taking more memory

I am trying to add multiple ScatterLineSeries in telerik:RadCartesianChart.

XAML Code :

<telerik:RadCartesianChart Palette="Windows8" MouseDoubleClick="RadCartesianChart_MouseDoubleClick">
            <telerik:RadCartesianChart.HorizontalAxis>
                <telerik:LinearAxis Minimum="0" 
                                    Maximum="5000"/>
            </telerik:RadCartesianChart.HorizontalAxis>
            <telerik:RadCartesianChart.VerticalAxis>
                <telerik:LinearAxis Minimum="0" 
                                     Maximum="10000" />
            </telerik:RadCartesianChart.VerticalAxis>
            <telerik:RadCartesianChart.Series>
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Red" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Blue" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Pink" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Yellow" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Green" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Orange"/>
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="AliceBlue" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Black" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Violet" />
                <telerik:ScatterLineSeries ItemsSource="{Binding}" YValueBinding="YValue" XValueBinding="XValue" BorderBrush="Red" StrokeThickness="3" Stroke="Cornsilk" />
            </telerik:RadCartesianChart.Series>
        </telerik:RadCartesianChart>

I am updating value in specific time intervarl. Example:

We have created 1 observable collection in which we are adding plot values(xaxis,yaxis)

public class PlotInfo
        {
            public double XValue { get; set; }
            public double YValue { get; set; }
        }

ObservableCollection<PlotInfo> ColPlotInfo = new ObservableCollection<PlotInfo>();

//Initially adding 100 records in observable collection & binding values to CartesianChart series.

            ArrayPlotInfo = arrayPlotInfo = new ChartViewModel.PlotInfo[100];
            for (int i = 0; i<100; i++)
                {

                ColPlotInfo.Add(new ChartViewModel.PlotInfo() { XValue = i + 100, YValue = i + 101 });
                }

On double click of chart, we are adding records on Timer_Elapsed.

private void RadCartesianChart_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            Timer timer = new Timer(100);
            timer.Enabled = true;
            timer.Elapsed += Timer_Elapsed;
            
        }
private void Timer_Elapsed(object sender, ElapsedEventArgs e)
        {

            App.Current.Dispatcher.Invoke((Action)delegate
            {
                ChartViewModel.PlotInfo plotInfo = new ChartViewModel.PlotInfo() { XValue = (x = x + DateTime.Now.Second), YValue = DateTime.Now.Second };
                ColPlotInfo.Add(plotInfo);
            });
}