Questions on UI for WPF Forum

2 answers

972 views

Slider drags smoothly with mouse, not at all with touch

I've got a slider bound to a double property. The double property controls the opacity of a shape right next to my control

When I drag the center thumb with the mouse, everything works perfectly. The opacity changes in 0.01 increments, the tooltip updates and the opacity changes. It does all of this smoothly.

When I try to drag that same thumb via touch, it just doesn't work. It basically seems to go from 0 to 1. Even if I set both small and large change to 0.01 and disable SnapToTicks (it has no effect). It won't drag smoothly. I've even tried styling the thumb to make it use a very large size (just to be sure it's not me missing it with touch). Still doesn't work.

What property do I have to set to make the slider change smoothly with touch as it does with the mouse?

I've attached an image of me dragging the center slider with the mouse where it's working perfectly.

Here is my XAML

<tk:RadSlider Grid.Row="8" Grid.Column="2" Grid.ColumnSpan="3"

AutoToolTipPlacement="BottomRight"

Minimum="0.0"

Maximum="1.0"

IsDeferredDraggingEnabled="False"

Orientation="Horizontal"

HorizontalAlignment="Center"

SmallChange="0.01"

Width="300"

Margin="2 2 2 5"

HandlesVisibility="Visible"

Value="{Binding Source={x:Static core:Settings.Default}, Path=ShapeHandleOpacity, Mode=TwoWay}"

/>

Slider

answered on 29 May 2019

1 answer

197 views

Custom Edit-Window and Rule-Window-Calling

Hello

I use the RadScheduleView (Version 19.2.510) and have two questions regarding the appointment-editing window.

1) Can the window for the definition of the rule of an appointment repetition be called independently of the ScheduleView (for example, if you want to call the menu item "Edit rule" in a list of appointments)?

2) Is it possible to use your own window to edit an appointment, independent of the ScheduleView and with your own ViewModel?

Thanks

ScheduleView

answered on 29 May 2019

5 answers

275 views

Row filter does not accept dot when filtering numeric column.

Hi all,

we are using RadGridView version 2016.2.613.45 (.NET 4.5, Visual studio 2017, C#) and are having issues with this functionality:

https://docs.telerik.com/devtools/wpf/controls/radgridview/filtering/how-to/howto-customize-the-default-field-filter-editor#filter-as-user-types

Basically, we have implemented a functionality to perform the filtering on every change(key press) in the filter bar.

However, we found a small issue(not to say a bug :) ).

When the filter mode is set to "RowFilter", and user is performing a filtering on numeric column, he is not able to type in the dot character(.).

The only way to get the dot in the filter is to type in the number and afterwards put the dot where you need it.

Example: trying to search for the number 556.32 you would need to type in the 55632 and afterwards place the dot where it needs to be.

This is only manifested when the filtering is set to trigger every time a user types. If we disable the functionality(remove the implementation), it works fine.

The implementation:

XAML:

<telerik:RadGridView ItemsSource="{Binding}" x:Name="radGridView" AutoGenerateColumns="False" >

<telerik:RadGridView.Resources>

<custom:ConditionalConvertor x:Key="converter"></custom:ConditionalConvertor>

</telerik:RadGridView.Resources>

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding SampleText}" Header="Sample Text" >

</telerik:GridViewDataColumn>

<telerik:GridViewDataColumn DataFormatString="{}{0:c0}" DataMemberBinding="{Binding SampleNumber,Converter={StaticResource converter}}" Header="Sample Number" ></telerik:GridViewDataColumn>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

In the code behind, we simply attach to the appropriate event:

this.radGridView.FieldFilterEditorCreated += WPFDataGrid_FieldFilterEditorCreated;

and in the "WPFDataGrid_FieldFilterEditorCreated" method we do:

private void WPFDataGrid_FieldFilterEditorCreated(object sender, EditorCreatedEventArgs e)

{

var FilterEditor = e.Editor as Telerik.Windows.Controls.Filtering.Editors.StringFilterEditor;

if (FilterEditor != null)

{

FilterEditor.MatchCaseVisibility = Visibility.Collapsed;

FilterEditor.BorderBrush = new SolidColorBrush(Colors.Transparent);

FilterEditor.Loaded += (s1, e1) =>

{

var textbox = e.Editor.ChildrenOfType<TextBox>().Single();

textbox.TextChanged += (s2, e2) =>

{

textbox.GetBindingExpression(TextBox.TextProperty).UpdateSource();

};

}

else

{

if (e.Editor is TextBox)

{

var textbox = e.Editor as TextBox;

textbox.TextChanged += (s2, e2) =>

{

textbox.GetBindingExpression(TextBox.TextProperty).UpdateSource();

};

}

Any help would be appreciated.

Regards,

Igor

GridView

answered on 28 May 2019

1 answer

246 views

telerik ui wpf demo not working

I get the following exception when i run the demo as soon as the loading screen end

i run windows 7 x64

any idea how can i run the demo ?

Starting WPF QSF at 24/05/2019 00:40:08.505
Exception at 24/05/2019 00:40:09.182.
Example: (null).
----------------
Input file or data stream does not conform to the expected file format specification.
at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter)
at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlObjectWriter objectWriter)
at System.Windows.FrameworkTemplate.LoadOptimizedTemplateContent(DependencyObject container, IComponentConnector componentConnector, IStyleConnector styleConnector, List`1 affectedChildren, UncommonField`1 templatedNonFeChildrenField)
at System.Windows.FrameworkTemplate.LoadContent(DependencyObject container, List`1 affectedChildren)
at System.Windows.StyleHelper.ApplyTemplateContent(UncommonField`1 dataField, DependencyObject container, FrameworkElementFactory templateRoot, Int32 lastChildIndex, HybridDictionary childIndexFromChildID, FrameworkTemplate frameworkTemplate)
at System.Windows.FrameworkTemplate.ApplyTemplateContent(UncommonField`1 templateDataField, FrameworkElement container)
at System.Windows.FrameworkElement.ApplyTemplate()
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Documents.AdornerDecorator.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Window.MeasureOverrideHelper(Size constraint)
at System.Windows.Window.MeasureOverride(Size availableSize)
at Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.WindowHostWindow.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Interop.HwndSource.SetLayoutSize()
at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
at System.Windows.Window.SetRootVisual()
at System.Windows.Window.SetRootVisualAndUpdateSTC()
at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
at System.Windows.Window.CreateSourceWindowDuringShow()
at System.Windows.Window.SafeCreateWindowDuringShow()
at System.Windows.Window.ShowHelper(Object booleanBox)
at System.Windows.Window.Show()
at Telerik.Windows.Controls.InternalWindow.WindowWithNoChromeWindowHost.Open(Boolean isModal)
at Telerik.Windows.Controls.WindowBase.ShowWindow(Boolean isModal)
at Telerik.Windows.QuickStart.App.OnStartup(StartupEventArgs e)
at System.Windows.Application.<.ctor>b__1_0(Object unused)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
----------------
Input file or data stream does not conform to the expected file format specification.
at MS.Internal.Text.TextInterface.Native.Util.ConvertHresultToException(Int32 hr)
at MS.Internal.Text.TextInterface.Font.CreateFontFace()
at MS.Internal.Text.TextInterface.Font.AddFontFaceToCache()
at MS.Internal.Text.TextInterface.Font.GetFontFace()
at System.Windows.Media.GlyphTypeface..ctor(Font font)
at MS.Internal.FontFace.PhysicalFontFamily.GetGlyphTypeface(FontStyle style, FontWeight weight, FontStretch stretch)
at MS.Internal.FontFace.PhysicalFontFamily.MS.Internal.FontFace.IFontFamily.GetTypefaceMetrics(FontStyle style, FontWeight weight, FontStretch stretch)
at System.Windows.Media.Typeface.ConstructCachedTypeface()
at System.Windows.Media.Typeface.get_CachedTypeface()
at System.Windows.Media.Typeface.CheckFastPathNominalGlyphs(CharacterBufferRange charBufferRange, Double emSize, Single pixelsPerDip, Double scalingFactor, Double widthMax, Boolean keepAWord, Boolean numberSubstitution, CultureInfo cultureInfo, TextFormattingMode textFormattingMode, Boolean isSideways, Boolean breakOnTabs, Int32& stringLengthFit)
at MS.Internal.TextFormatting.SimpleRun.CreateSimpleTextRun(CharacterBufferRange charBufferRange, TextRun textRun, TextFormatterImp formatter, Int32 widthLeft, Boolean emergencyWrap, Boolean breakOnTabs, Double pixelsPerDip)
at MS.Internal.TextFormatting.SimpleRun.Create(FormatSettings settings, CharacterBufferRange charString, TextRun textRun, Int32 cp, Int32 cpFirst, Int32 runLength, Int32 widthLeft, Int32 idealRunOffsetUnRounded, Double pixelsPerDip)
at MS.Internal.TextFormatting.SimpleTextLine.Create(FormatSettings settings, Int32 cpFirst, Int32 paragraphWidth, Double pixelsPerDip)
at MS.Internal.TextFormatting.TextFormatterImp.FormatLineInternal(TextSource textSource, Int32 firstCharIndex, Int32 lineLength, Double paragraphWidth, TextParagraphProperties paragraphProperties, TextLineBreak previousLineBreak, TextRunCache textRunCache)
at MS.Internal.TextFormatting.TextFormatterImp.FormatLine(TextSource textSource, Int32 firstCharIndex, Double paragraphWidth, TextParagraphProperties paragraphProperties, TextLineBreak previousLineBreak)
at System.Windows.Media.FormattedText.LineEnumerator.FormatLine(TextSource textSource, Int32 textSourcePosition, Double maxLineLength, TextParagraphProperties paraProps, TextLineBreak lineBreak)
at System.Windows.Media.FormattedText.LineEnumerator.MoveNext()
at System.Windows.Media.FormattedText.DrawAndCalculateMetrics(DrawingContext dc, Point drawingOffset, Boolean getBlackBoxMetrics)
at System.Windows.Media.FormattedText.get_Metrics()
at Telerik.Windows.Controls.RadGlyph.CalculateElementDesiredSize()
at Telerik.Windows.Controls.RadGlyph.RemeasureElement(DependencyObject d, DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
at System.Windows.FrameworkTemplate.ReceivePropertySet(Object targetObject, XamlMember member, Object value, DependencyObject templatedParent)
at System.Windows.FrameworkTemplate.<>c__DisplayClass45_0.<LoadOptimizedTemplateContent>b__3(Object sender, XamlSetValueEventArgs setArgs)
at System.Xaml.XamlObjectWriter.OnSetValue(Object eventSender, XamlMember member, Object value)
at System.Xaml.XamlObjectWriter.Logic_ApplyPropertyValue(ObjectWriterContext ctx, XamlMember prop, Object value, Boolean onParent)
at System.Xaml.XamlObjectWriter.Logic_DoAssignmentToParentProperty(ObjectWriterContext ctx)
at System.Xaml.XamlObjectWriter.Logic_AssignProvidedValue(ObjectWriterContext ctx)
at System.Xaml.XamlObjectWriter.WriteEndMember()
at System.Xaml.XamlWriter.WriteNode(XamlReader reader)
at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter)

End of exception.

General Discussions

answered on 28 May 2019

2 answers

108 views

Access PART_SearchPanel DataContext From HighLightTextBlock

Hello.

Can I access SearchPanel DataContext from another part of Template?

I have a HightLightningTextBlock Class that I want to use instead of the HighLightTextBlock used in DataColumn. I use a DataTemplate:

<DataTemplate x:Key="HighlightingTemplate">

<highLight:HighlightingTextBlock HighlightText="{Binding SearchViewModel.SearchText}" Text="{Binding Name}">

<i:Interaction.Behaviors>

<highLigthBehavior:CellValueBindingBehavior />

</i:Interaction.Behaviors>

</highLight:HighlightingTextBlock>

</DataTemplate>

I asign the DataTemplate when adding a column:

column.CellTemplate = (DataTemplate)Application.Current.Resources["HighlightingTemplate"];

I want to bind the "HighlightText" property to the "SearchText" of "PART_SearchAsYouTypeTextBox". The "Text" property works well. I use the HighlightingTextBlock because I want to change the background instead of the foreground when type in search box.

Thank you.

GridView

answered on 28 May 2019

3 answers

76 views

strange behaviour nuget packages

I switched my solution from using references to the binaries i have localy to nuget packages.

But by doing this i get a strange behaviour in the controls UI. Suddenly all controls get different theming than they had before the nuget packages.

How do i fix this so they are again showing as it was before?

General Discussions

answered on 28 May 2019

4 answers

588 views

Password protected Excel document

A password protected Excel document causes an error message "End of central Directory not found".

Would it be possible to get a more appropriate error message at least? The possibility to enter a Password would be great, of course.

Thanks

Michael

Spreadsheet

answered on 28 May 2019

9 answers

264 views

TileList Data Binding - MVVM

I am looking to set the ItemsSource of the TileList to an ObservableCollection of object. One property of this object will respresent a SizeMode which I would like to see setup as a Setter to set the TileType property. I have created an IValueConverter to convert this INT size property to the Telerik TileType enum, and setup a binding for this, however it is looking for this property on my window ViewModel, not a property of each bound item.

In the online documentation this is achieved by implementing an AutoGeneratingTile event handler in the code behind.

Could you please provide an example of how this is achieved.

Thanks

Duncan

TileList

answered on 27 May 2019

0 answers

877 views

WPF MATERIAL DESIGN LISTBOX - HELP

Hi Guys

I really desperately need your help on this. I have created listbox with a toggle from materialdesign theme package and along with richtextbox. The listbox comprises of three listboxitems which are bold, italic and underline. So when the user clicks on the button and the highlighted text in the richtextbox will reflect its changes accordingly, i.e. normal font text changes to font bold.

However what I have noticed the listboxitem with button like format has to be double clicked in order to get the font text to change from bold to normal, vice versa from normal to bold. I have been struggling on how to get the single click selection and the button to show the selected highlight colour etc.

I couldn't use the event setter as it messes the highlight colour and styling of the listboxitems

PLEASE HELP - the code behind is C#

General Discussions

asked on 25 May 2019

3 answers

84 views

Server Page Sort Group Filter Demo

Hello,

I have the local WPF RadControls demos installed on my machine, but I cannot view the Server Page Sort Group Filter demo, the app crashes and closes everytime. Is there a newer version of the demo that I can install? Or, perhaps some other documentation about how to wire up the DataGridView, and a DataPager in this way.

What I am wondering specifically is if something like that demo will work using a WCF DataService instead of linq to sql, since the DataService will not allow Group By, or Select? All that I really need is the paging, can these controls help me out with 'lazy loading' through a DataService one page at a time?

Thanks.

GridView

answered on 24 May 2019