Questions on UI for WPF Forum

0 answers

41 views

Update problem with some telerik packages

I'm using central package management, where my Directory.Build.props has folliwing entries:

<ItemGroup>
    <PackageVersion Include="Telerik.UI.for.Wpf.NetCore.Xaml" Version="2024.1.423" />
    <PackageVersion Include="Telerik.Windows.Controls.Data.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.DataVisualization.for.Wpf.Xaml" Version="2024.3.924" />
    <PackageVersion Include="Telerik.Windows.Controls.Diagrams.Extensions.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.Diagrams.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.Diagrams.Ribbon.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.GridView.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.Input.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.Navigation.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Controls.RibbonView.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Data.for.Wpf.Xaml" Version="2025.2.707" />
    <PackageVersion Include="Telerik.Windows.Diagrams.Core.for.Wpf.Xaml" Version="2025.2.707" />
</ItemGroup>

As you can maybe see,

Telerik.UI.for.Wpf.NetCore.Xaml has 2024.1.423
Telerik.Windows.Controls.DataVisualization.for.Wpf has 2024.3.924

when using the manage nuget packages dialog from within visual studio it does not report that any updates are necessary, but the build tells me that (of course) there is a version mismatch,

The dialog even tells me that there is a newer version:

What could be the problem that it doesn't get updated or is not found to require an update?

General Discussions

updated question on 15 Jul 2025

1 answer

45 views

How to set custome date display format in WPF

I using the <telerik:RadDatePicker>

DisplayFormat = (Long or short) only there I need a customer format how we archive.

Example : 1 July 2025, 1 JUL 2025

DatePicker

DateTimePicker

GridView

answered on 14 Jul 2025

0 answers

36 views

RadMaskedNumericInput does not respect click location when value is 0

I have a RadMaskedNumericInput as follows:

<telerik:RadMaskedNumericInput Grid.Row="0" Grid.Column="1" Width="55"
                       Mask=""
                       FormatString="n2"
                       Value="{Binding TotalFeedVolume}"
                       IsClearButtonVisible="False"
/>

When I click on the left of the initial zero, it moves my cursor right in front of the decimal point. This is a bit frustrating, as I couldn't, for example, just easily make it "10" with one keystroke. Any way to fix this?

MaskedInput (Numeric, DateTime, Text, Currency)

asked on 09 Jul 2025

1 answer

26 views

Change colors of RadVirtualKeyboardWindow's close button

Hello,

I need to change the color of the RadVirtualKeyboardWindow's close button. At the moment it is not viewable very good. I use Material style around in my application, but it seems that it does not completly fit my needs.

I tried to change the button's beahviour like this:

<Style TargetType="telerik:RadVirtualKeyboardWindow">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="telerik:RadVirtualKeyboardWindow">
                <Grid>
                    <!-- Fensterinhalt -->
                    <Border Background="{TemplateBinding Background}">
                        <ContentPresenter />
                    </Border>

                    <!-- Schließen-Button -->
                    <Button x:Name="PART_CloseButton"
                            Width="24" Height="24"
                            HorizontalAlignment="Right"
                            VerticalAlignment="Top"
                            Margin="5"
                            Background="DarkRed"
                            Foreground="White"
                            BorderBrush="Transparent"
                            Content="✕"
                            FontWeight="Bold"
                            Cursor="Hand"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

But that actually lead to a very long button and could not change that either:

What can I try next?

Thanks and best regards,

Ferdinand

VirtualKeyboard

Window

answered on 09 Jul 2025

0 answers

27 views

Print pdf with RadPdfViewer - issue with font

Hello,
I'm trying to merge several PDF files into one and then print them.
I am using version 2022.2.621.

My code looks like this

       public static void Print(List<string> files)
       {
           using (MemoryStream stream = new MemoryStream())
           {
               using (PdfStreamWriter fileWriter = new PdfStreamWriter(stream, leaveStreamOpen: true))
               {
                   foreach (string path in files)
                   {
                       using (PdfFileSource fileSource = new PdfFileSource(new MemoryStream(File.ReadAllBytes(path))))
                       {
                           for (int i = 0; i < fileSource.Pages.Length; i++)
                           {
                               PdfPageSource sourcePage = fileSource.Pages[i];
                               using (PdfPageStreamWriter resultPage = fileWriter.BeginPage(sourcePage.Size))
                               {
                                   // set content                      
                                   resultPage.WriteContent(sourcePage);
                               }
                           }
                       }
                   }
               }

               var pdfViewer = new RadPdfViewer();
               PdfFormatProvider provider = new PdfFormatProvider();
               RadFixedDocument document = provider.Import(stream);
               pdfViewer.Document = document;
               var printdlg = new PrintDialog();
               printdlg.UserPageRangeEnabled = true;
               printdlg.SelectedPagesEnabled = true;
               if (printdlg.ShowDialog() == true)
               {
                   var printSettings = new PrintSettings(Path.GetFileNameWithoutExtension("file"), false);
                   pdfViewer.Print(printdlg, printSettings);
               }
           }
       }

My problem is, that befor print pdf looks like this

But after print

What I discoverd, that file befor print has more fonts then after.
Befor:

After

How can I handle this problem?

PDFViewer

asked on 08 Jul 2025

0 answers

44 views

Removing Outside Grid Border

I've been trying to remove the thin white border line with no luck, Any help?

                            <telerik:RadGridView
                                Margin="0,5,0,0" AutoGenerateColumns="False" BorderThickness="0" BorderBrush="{StaticResource LaGrey12}"
                                ColumnBackground="{StaticResource LaGrey12}"
                                GridLinesVisibility="None" IsReadOnly="True"
                                ItemsSource="{Binding ContactActivityNote.ContactActivityParticipants}"
                                ShowColumnHeaders="False">
                                <telerik:RadGridView.Columns>
                                    <telerik:GridViewDataColumn
                                        Width="Auto"
                                        DataMemberBinding="{Binding ParticipationTypeId}"
                                        Header="Type" />
                                    <telerik:GridViewDataColumn
                                        Width="*"
                                        DataMemberBinding="{Binding AddressedTo}"
                                        Header="Addressed To" />
                                </telerik:RadGridView.Columns>
                            </telerik:RadGridView>

GridView

asked on 07 Jul 2025

0 answers

16 views

RadTimeline extended selection

Hi,

Is it possible to get the start and end of the selected time on mouse selection event?

Regards,

kk

TimeLine

asked on 04 Jul 2025

0 answers

35 views

RadGridView - Constrain Autosizing of Columns and Rows

I have a RadGridview displaying data from a datatable using autogenerated columns. I have EnableColumnVirtualization="True" and EnableRowVirtualization="True". When I scroll through the grid, columns and rows are autosizing to display data and everything looks good for the most part.

However, I have some columns that can be excessively wide, easily twice the width of the screen. The same for rows, I occasionally have a cell where the row is excessively high.

How can I set a max width for column and row to prevent excessively wide columns or tall rows? I tried setting MaxHeight and MaxWidth, but that also constrains the user to those settings if they do intentionally want to increase those values.

GridView

asked on 30 Jun 2025

0 answers

32 views

Only show thousands separator when needed

Is there a property I can set so that the RadMaskedNumericInput field only shows the thousands separator when the value gets over 1,000? It doesn't look great that the commas appear before the value is high enough to need them.

MaskedInput (Numeric, DateTime, Text, Currency)

asked on 30 Jun 2025

0 answers

26 views

Change Default Selection Logic

The data in all of our multi column combo boxes has a key value always as the first column in the grid. We want our users to be able to enter one of those key values then hit tab to select it. However, in some cases, just entering the key value doesn't cause the record with that key value to be at the top, so when the user hits tab it selects the top record instead of the record matching the key value entered.

See example below with US states as values:

In scenarios like these, I'd like to be able override the default selection logic and see if there is a record where the text in the search box exactly matches a key value, if so, select that value instead of the first value.

This was the last thing I tried inside the PreviewKeyDown event but it seemed to freeze and then not work as expected.

if (e.Key == System.Windows.Input.Key.Tab)
{
    string typedText = MultiColumnComboBox
        .FindChildByType<TextBox>()
        .Text
        .Trim();

    if (MultiColumnComboBox.DropDownContentManager.DropDownElement is RadGridView gridView)
    {
        string keyFieldName = gridView.Columns[0].UniqueName;

        var itemToSelect = gridView.Items
            .OfType<DataRow>()
            .FirstOrDefault(row =>
            {
                var keyValue = row[keyFieldName];
                return keyValue != null &&
                       keyValue.ToString().Equals(typedText, StringComparison.OrdinalIgnoreCase);
            });

        if (itemToSelect != null)
        {
            gridView.SelectedItem = itemToSelect;
        }
    }
}

MultiColumnComboBox

asked on 27 Jun 2025