Questions on UI for WPF Forum

1 answer

1.1K+ views

Autocomplete date based by only entering date but the current month and year is automatically selected

Hi team,

We are working with a requirement where user would only wants to enter date for the selection and control suggest current month and year.

DateTimePicker

answered on 24 Aug 2021

1 answer

235 views

RadComboBox Filtering trough Textblock inside the Itemtemplate of the Combobox

Hello,

I want to be able to filter (and also see what I am filtering) when the IsEditable Property of the RadComboBox is false

Is there a way to set a Textblock in the Itemtemplate (like the ClearAll Button) of the RadComboBox to filter through the Items?

Regards,

Kai

ComboBox

answered on 24 Aug 2021

2 answers

635 views

Open PDF file with PDfViewer, some Chinese characters are not displayed

This is what it looks like in the PDfViewer.Some characters are not shown. '成' Unable to display。

There are characters in the document.

PDFViewer

answered on 24 Aug 2021

1 answer

171 views

For RadDiagram connections, how do I tell if a point has been added?

I can see event handlers for Move and Remove a point on a connection but not for add. There's code for ConnectionManipulationStartedCommand and ConnectionManipulationCompletedCommand which gives us move and remove but is there one for adding a point?

Diagram

answered on 23 Aug 2021

1 answer

231 views

RadDocking - Created RadPaneGroups have no name when OnPreviewShowCompass events is fired

Hi All!

I solve the problem to disable of some RadPanes to drop on a specific RadPaneGroup. RadPane groups are created in xaml with a defined Name (also Tag has been tested):

<telerik:RadSplitContainer InitialPosition="DockedLeft">
        <telerik:RadPaneGroup x:Name="Left"/>
</telerik:RadSplitContainer>

In a custom docking panes factory the each RadPane (Tag contains position - string, e.g. Left) is correctly added into the specific RadPaneGroup based on the Name specified above. All the RadPanes are correctly added.

protected override void AddPane(Telerik.Windows.Controls.RadDocking radDocking, Telerik.Windows.Controls.RadPane pane)
{
      var tag = pane.Tag.ToString();
      if (radDocking.SplitItems.ToList().FirstOrDefault(i => i.Control.Name.Contains(tag)) is RadPaneGroup paneGroup)
      {
	    paneGroup.Items.Add(pane);
      }
      else
      {
            base.AddPane(radDocking, pane);
      }
}

OnPreviewShowCompass event is used to allow a RadPane to drop on a specific RadPaneGroup. However, in the argument of this method (PreviewShowCompassEventArgs e) the Name property in e.TargetGroup is empty. But a given TargetGroup (RadPaneGroup) contains the correct number and types of RadPanes.
I cannot understand why Name property is empty, it should be specified based on xaml and a reference to this should be taken.

Thank you.

Radek

Docking

answered on 23 Aug 2021

2 answers

259 views

RadChartView ScatterPointSeries with horizontal lines

Hi!

I would like to have a scatterpoint series with horizontal lines as point template.

Moste important: the width of these horizontal lines must be the width of the ticks on the horizontal axis.

It is supposed to look like a StepLineChart where the verticalrisers are transparent so to speak, so the horizontals forms steps.

Chart

answered on 23 Aug 2021

2 answers

361 views

[Solved] RadGridview paste adds blank rows

Have a RadGridview that allows multiple selections. Currently only allowing rows.

<telerik:RadGridView x:Name="gvMrsUserSettings"

Background="Black"

FontFamily="Arial"

Foreground="White"

FontSize="11"

GroupRenderMode="Flat"

ItemsSource="{Binding MrsUserDataTable}"

SelectionMode="Extended"

AutoGenerateColumns="True"

Margin="0,0,0,0"

Grid.Row="1"

ActionOnLostFocus="None"

CanUserFreezeColumns="False"

RowIndicatorVisibility="Collapsed"

ShowGroupPanel="False"

IsFilteringAllowed="True"

ShowSearchPanel="True"

SearchPanelCloseButtonVisibility="Collapsed"

IsReadOnly="True"

CanUserReorderColumns="False"

CanUserDeleteRows="False"

CanUserInsertRows="False"

CanUserGroupColumns="False"

CanUserSearch="False"

CanUserSortGroups="False"

EnableColumnGroupsVirtualization="False"

ClipboardCopyMode="All,Header"

ClipboardPasteMode="Cells,AllSelectedRows"

IsBusy="False"

>

If you select row 1, 4, 6 - 10 and 20, do a Ctrl+C then a Ctrl+V in a text file or excel all the rows between the numbers are blank.

Not sure what feature needs to be included in the XAML to prevent this behavior. Or what must be done short of modifying the collection in the clipboard.

sample of result is:

GROUP

UTI-KELLER

CLK_FINANCE

EMS_FIRE

CEL

COURT_ADMIN

UTILITIES

GridView

answered on 21 Aug 2021

1 answer

214 views

[Solved] RadTimeBar with Non-Gregorian Calendar

Does the RadTimeBar support when Windows has a non-Gregorian calendar set? Specifically this one: https://docs.microsoft.com/en-us/dotnet/api/system.globalization.umalquracalendar?view=net-5.0. I get an exception that says this when I change my Windows settings to get that calendar:

Exception Stack Trace: System.Windows.Markup.XamlParseException: Specified time is not supported in this calendar. It should be between 04/30/1900 00:00:00 (Gregorian date) and 11/16/2077 23:59:59 (Gregorian date), inclusive.

I can reproduce it with XAML as simple as this:

		<telerik:RadTimeBar x:Name="TimeBar"
                            PeriodStart="1-Jan-2019 12:00:00 AM"
                            PeriodEnd="31-Dec-2019 11:59:59 PM"
                            VisiblePeriodStart="14-March-2019 12:00:00 AM"
                            VisiblePeriodEnd="11-Nov-2019 11:59:59 PM">
			<telerik:RadTimeBar.Intervals>
				<telerik:YearInterval />
				<telerik:MonthInterval />
				<telerik:WeekInterval />
				<telerik:DayInterval />
			</telerik:RadTimeBar.Intervals>
		</telerik:RadTimeBar>

TimeBar

answered on 20 Aug 2021

1 answer

283 views

[Solved] Is Telerik ViewModelBase's PropertyChanged extensible?

Hello

I am using it by making a ViewModelBase class by default.

I looked at Telerik's ViewModelBase class documentation and this is not what I'm looking for.
https://docs.telerik.com/devtools/wpf/common-information/mvvm-helpers/common-viewmodelbase-class

I prefer to display getter setters on one line.

using Telerik.Windows.Controls;
private object item;
public object Item 
{ 
        get => item;
        set 
        { 
                item= value; 
                RaisePropertyChanged(); 
        } 
}

// Create ViewModelBase helper method
protected virtual bool SetField<T>( ref T member, T newValue, [CallerMemberName] string propertyName) ... ... 

private object item;
public object Item
{
    get => item;
    set  => SetField(ref item, value);
}

I want to keep it simple. Do you have any plans to improve this?
Or I would like to ask if it is possible to create a similar one and use it while using the Telerik ViewModelBase Class.

If that doesn't work, I'll continue to create and use my ViewModelClass.

Thanks.

General Discussions

answered on 20 Aug 2021

1 answer

252 views

RadDateTimePicker not work in RadGanttView

I use RadDateTimePicker in GanttView like the example "GanttView ", but the theme not work.

My themes is windows8, but not work in RadDateTimePicker .

my xaml is:

       <telerik:RadGanttView x:Name="ganttview" TasksSource="{Binding Tasks}" BorderBrush="#FFD6D4D4"
				BorderThickness="1 0 1 1" SelectedItem="{Binding SelectedItem, Mode=TwoWay}"
				VisibleRange="{Binding VisibleRange}" HighlightedItemsSource="{Binding HighlightedItems}" Grid.Row="1"
				Margin="0 6 0 0"
				PixelLength="{Binding PixelLenght, Mode=TwoWay}">
            <telerik:RadGanttView.Columns>
                <telerik:TreeColumnDefinition Header="Title" MemberBinding="{Binding Title}" Width="240">
                    <telerik:TreeColumnDefinition.CellEditTemplate>
                        <DataTemplate>
                            <TextBox Text="{Binding Title, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" telerik:TouchManager.TouchMode="None" />
                        </DataTemplate>
                    </telerik:TreeColumnDefinition.CellEditTemplate>
                </telerik:TreeColumnDefinition>
                <telerik:ColumnDefinition MemberBinding="{Binding Start}" Header="Start" Width="120">
                    <telerik:ColumnDefinition.CellEditTemplate>
                        <DataTemplate>
                            <telerik:RadDateTimePicker SelectedValue="{Binding Start, Mode=TwoWay}" />
                        </DataTemplate>
                    </telerik:ColumnDefinition.CellEditTemplate>
                </telerik:ColumnDefinition>
                <telerik:ColumnDefinition MemberBinding="{Binding End}" Header="End" Width="120">
                    <telerik:ColumnDefinition.CellEditTemplate>
                        <DataTemplate>
                            <telerik:RadDateTimePicker SelectedValue="{Binding End, Mode=TwoWay}" />
                        </DataTemplate>
                    </telerik:ColumnDefinition.CellEditTemplate>
                </telerik:ColumnDefinition>
                <telerik:ColumnDefinition MemberBinding="{Binding Progress}" Header="Progress" Width="AutoHeaderAndContent">
                    <telerik:ColumnDefinition.CellEditTemplate>
                        <DataTemplate>
                            <telerik:RadNumericUpDown Value="{Binding Progress, Mode=TwoWay}" CustomUnit="%" Minimum="0"
									Maximum="100" telerik:TouchManager.TouchMode="None" />
                        </DataTemplate>
                    </telerik:ColumnDefinition.CellEditTemplate>
                </telerik:ColumnDefinition>
                <telerik:ColumnDefinition MemberBinding="{Binding IsMilestone}" Header="IsMilestone" Width="100" />
            </telerik:RadGanttView.Columns>
        </telerik:RadGanttView>

Thanks for your help

GanttView

TimePicker

answered on 19 Aug 2021