Questions on UI for WPF Forum

0 answers

82 views

RadButton

I created a new WPF project in Visual Studio 2022 - opened the XAML, dropped a RadButton. Nothing appeared. Where did it go? When I did the same steps in Visual Studio 2019 I see the button all right.

Buttons

asked on 24 Jun 2024

0 answers

84 views

How to get Image inside RTB to always fill width

I have an RTB control and I do not want horizontal scroll bar to ever show. When a user inserts or copies in an image, I would like the image to always only ever fill the width of the RTB and never exceed it. Increasing height, is fine, vertical scrolling is acceptable in this instance.

Is this a possibility? I am able to do it with tables.

RichTextBox

asked on 24 Jun 2024

0 answers

83 views

RadGridView LostFocus raised by mouse wheel

I have to react to the RadGridView's LostFocus event with a handler. Unfortunately, I discovered that the event is also triggered at unexpected times. What is particularly surprising is that scrolling with the scroll bar has no effect, but scrolling with the mouse wheel immediately calls the handler. And it does this without clicking the mouse and leaving the control. What could be the reason for this, or how can I get around it? The actual case that should be reacted to is when either another item of it is selected or the entire RadGridView loses focus by focusing on a control outside of it. Simply checking e.OriginalSource.GetType() == typeof(GridViewCell) doesn't help here either, as this is often the case when clicking on another control. And IsScrolling is also constantly false.Does anyone have any ideas?

GridView

updated question on 24 Jun 2024

0 answers

122 views

Support for CommunityToolkit.Mvvm ObservableProperty in WPF PropertyGrid control

I created a class with CommunityToolkit.Mvvm package and use ObservableProperty to create properties for this class. But the PropertyGrid control does not recognize properties created in this way. Are there any way PropertyGrid can support ObservableProperty?

using CommunityToolkit.Mvvm.ComponentModel;
using System.ComponentModel.DataAnnotations;

namespace Test
{
    public partial class DrawingModel : ObservableObject
    {
        public string Name { get; set; }

        [ObservableProperty]
        public double _length;


        [ObservableProperty]
        public double _width;

        [ObservableProperty]
        public double _height;
    }
}

PropertyGrid

asked on 24 Jun 2024

1 answer

64 views

Icons not showing in History Pane of RadFileDialog Window

Please see attached image. What could be the cause of this? Some Fonts missing?

I'm using StyleManager for Theming.

FileDialogs

answered on 20 Jun 2024

2 answers

116 views

Creating a RadDocument from XAML string

I have a XAMLDataProvider that is binding a string property to a RadRichTextBox.

I want to be able to bind the content of the RadRichTextBox to a string (which I have done) and then once a save button is pressed, I need to run some code similar to this.

Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.DocxFormatProvider provider = new Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.DocxFormatProvider();
RadDocument document = new RadDocument(string myXAMLString);
byte[] output = provider.Export(document);

Essentially I need to be able to bind a property from the ViewModel to RadRichTextBox..... which I am doing with XAML data provider.

Then after a save button is clicked, I take the property which is a string and I need to create a RadDocument from the string that represents that and export that document to a byte[].

Is there an easier and better way to be doing this?

Thanks!

RichTextBox

answered on 20 Jun 2024

1 answer

335 views

Is TouchDragTrigger no longer available (it is missing in 2024.2.514.70) ?

It is not in Telerik.Windows.Controls.dll for WPF70 2024.2.514.70

GridView

answered on 20 Jun 2024

2 answers

76 views

RadCartesianChart LinearAxis DateFormat Germany?

Hi,

i found a sample:

    <Window.Resources>
        <local:DoubleToDateTimeLabelConverter x:Key="DoubleToDateTimeLabelConverter" />
    </Window.Resources>
    <Grid>
        <telerik:RadCartesianChart>
            <telerik:RadCartesianChart.HorizontalAxis>
                <telerik:LinearAxis>
                    <telerik:LinearAxis.LabelTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding StringFormat='h:MM tt', Converter={StaticResource DoubleToDateTimeLabelConverter}}" />
                        </DataTemplate>
                    </telerik:LinearAxis.LabelTemplate>
                </telerik:LinearAxis>
            </telerik:RadCartesianChart.HorizontalAxis>
            
            <telerik:RadCartesianChart.VerticalAxis>
                <telerik:CategoricalAxis />
            </telerik:RadCartesianChart.VerticalAxis>
            
            <telerik:LineSeries CategoryBinding="City" ValueBinding="StartTimeOA" ItemsSource="{Binding}" />
        </telerik:RadCartesianChart>
    </Grid>

        public MainWindow()
        {
            InitializeComponent();

            var Items = new ObservableCollection<PlotItemViewModel>();
            var dateTime = DateTime.Now;
            Items.Add(new PlotItemViewModel() { City = "Atlanta", StartTime = dateTime.AddMinutes(5) });
            Items.Add(new PlotItemViewModel() { City = "Atlanta", StartTime = dateTime.AddMinutes(10), });
            Items.Add(new PlotItemViewModel() { City = "New York", StartTime = dateTime.AddMinutes(100), });
            Items.Add(new PlotItemViewModel() { City = "Miami", StartTime = dateTime.AddMinutes(120), });
            Items.Add(new PlotItemViewModel() { City = "Miami", StartTime = dateTime.AddMinutes(150), });
            Items.Add(new PlotItemViewModel() { City = "Savannah", StartTime = dateTime.AddMinutes(200), });
            Items.Add(new PlotItemViewModel() { City = "Birmingham", StartTime = dateTime.AddMinutes(250), });
            Items.Add(new PlotItemViewModel() { City = "New Orleans", StartTime = dateTime.AddMinutes(280), });

            this.DataContext = Items;
        }
    }

    public class PlotItemViewModel
    {
        public string City { get; set; }
        public DateTime StartTime { get; set; }
        public double StartTimeOA { get { return this.StartTime.ToOADate(); } }
    }

    public class DoubleToDateTimeLabelConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            double doubleValue = double.Parse(value.ToString());
            return DateTime.FromOADate(doubleValue);
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

The Result is:

Here is the Dateformat "us-US" (10:05 AM / 4:06 PM) but i need German "de-DE" (10:05 / 16:06) !

Have anyone a idea how i can do this?

Best regards

Bernd

ChartView

answered on 19 Jun 2024

1 answer

100 views

WPF RadGridView OnCellEditEnded with Custom column NewData and OldData are always empty

We have the similar problem on 2024.1.228.45
https://www.telerik.com/forums/gridview-celleditended-returns-null-data-properties-for-custom-column

Is there any solution to get NewData and OldData on OncellEditEnded for a custom column?

GridView

answered on 18 Jun 2024

0 answers

54 views

Changing table properties in code after calling InsertTable()

I have a button which inserts a table.

myRichTextBox.InsertTable(2,4)

I want to modify some properties on the table after it is inserted.

I want to set fontsize, fontfamily, change border and cell color to RED and make it so that the table will always fill the available width. Is this a possibility? Or do I have to manually build out the entire table and insert at cursor location?

RichTextBox

asked on 17 Jun 2024