Questions on UI for WPF Forum

5 answers

314 views

Hi,

I'm seeing a new binding error in the Output window with 2016 R3 that was not there before:

System.Windows.Data Warning: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Telerik.Windows.Controls.RadRibbonView', AncestorLevel='1''. BindingExpression:Path=IsHostedInRibbonWindow; DataItem=null; target element is 'WindowTitle' (Name='WindowTitle'); target property is 'NoTarget' (type 'Object')

This is coming from the new MultiDataTrigger condition added to the WindowTitleStyle. It's also coming from the WindowTitle that exists in the RadRibbonWindowStyle control template, which does not have a RadRibbonView ancestor, as opposed to the one in the RadRibbonViewTemplate.

RibbonView and RibbonWindow

answered on 24 Oct 2018

1 answer

132 views

calculation formula problems in a table

Add a table In a word, in a tableCell,the value changes depending the values of some other TableCells ,need to add a calculation formula, see the attached file"word"

But ,when changed the word to XAML, it shows "Not supported field expression!", see the attached file "RadRichTextBox"

How can I solve this ? or any other way?

RichTextBox

answered on 23 Oct 2018

3 answers

146 views

Disable editing MergeField content.

Hi,

it is possible to prevent user from chaning merge fields content using RadRichTextBox. I know this changes are saving or affects document, but it looks not good when user can change {MERGEFIELD NAME} to something like {MERREAF52FF AAME} or anything else. Is there any flag for this? Or should I implement my own function? How to check if current caret position is inside merge field?

Thanks

RichTextBox

answered on 23 Oct 2018

1 answer

400 views

AutoScrollToSelectedItem does not work correctly with different HeirarchicalTemplate

I use RadTreeView with Custom style and HeirarchicalTemplate. I work with IsSelected property via twoway binding from viewmodel. While I switch manually or programmatically by elements of the same type AutoScrollToSelectedItem works correctly. As soon as I switch to an item of a different viewmodel type I get a scroll to the middle of the tree, the selected item is not visible on the screen. When opening the tree for the first time without the selected elements, I also have a scroll in the middle, although I expect to see the beginning of the list.

<telerik:RadTreeView Name="treeViewOperationItems" ItemsSource="{Binding OperationCollection, Mode=TwoWay}" Background="White"
IsLineEnabled="False" Grid.Row="1" Grid.RowSpan="2" Margin="5" ItemContainerStyle="{StaticResource TreeItemStyle}"
ScrollViewer.HorizontalScrollBarVisibility="Disabled" SelectedItem="{Binding SelectedItem, Mode=TwoWay}"
AutoScrollToSelectedItem="True">

<telerik:RadTreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type viewModels:OperationDefVM}" ItemsSource="{Binding Items}">
<StackPanel Orientation="Vertical" Margin="10" FocusManager.FocusedElement="{Binding ElementName=textBox}" >
<TextBox x:Name="textBox" Text="{Binding Path=Data.Def.UniqueId}"
helpers:FocusExtension.IsFocused="{Binding IsSelected, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}"
MinWidth="100" Style="{StaticResource TreeTextBoxStyle}"/>
<extendEditor:ExtendedEditor Text="{Binding Path=Data.Def.UniqueId, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
x:Name="edit" Height="40" Width="400" FontSize="14"/>
</StackPanel>
</HierarchicalDataTemplate>

</telerik:RadTreeView.Resources>
</telerik:RadTreeView>

TreeView

answered on 23 Oct 2018

15 answers

716 views

Setting ShapeStyle to RadDiagram

Hi,

I'm populating RadDiagram by defining a GraphSource. I have several different types of nodes with unique shapes. How do I link the node with its graphical presentation. The example in documentation uses ConnectionStyle and ShapeStyle attributes of telerik:RadDiagram, However in my case I have several ShapeStyles.

<telerik:RadDiagram x:Name="diagram"

ConnectionStyle="{StaticResource pascalEdgeStyle}"

ShapeStyle="{StaticResource pascalNodeStyle}" /> 

Diagram

answered on 22 Oct 2018

3 answers

98 views

RadDatePicker Control

Hi All,

I want to customize the ErrorToolTip property of RadDatePicker Control.

I am able to do with event ParseDateTimeValue of RadDatePicker Control based on some condition.

           if (Convert.ToDateTime(input) < dateLimit)
            {
                (sender as RadDatePicker).ErrorTooltipContent = "Another Error";
                args.IsParsingSuccessful = false;
                args.Result = args.PreviousValue;
            }

its working fine when I am typing some date manually but when I am selecting the date from RadDatePicker Control ,the same code executes but ErrorToolTip is not displaying

Please help me.

General Discussions

answered on 22 Oct 2018

1 answer

162 views

Suggest adjust the cursor for the high DPI screen!

In high DPI screen,many software's cursor is too small,include the telerik UI,but besides the microsoft.
I got the following code to resolve the problem,you can try:

static ConstructorInfo _cursorScaleStreamCtor= typeof(Cursor).GetConstructor(new Type[2]
   {
    typeof(Stream),
    typeof(bool)
   });
   //uri refer to the *.cur file(normal 32x32),compile for resource
   internal static Cursor LoadCursor(Uri uri)
        {
            StreamResourceInfo resourceStream = Application.GetResourceStream(uri);
            if ( _cursorScaleStreamCtor != null)
            {
                return (Cursor)_cursorScaleStreamCtor.Invoke(new object[2]
                {
                    resourceStream.Stream,
                    true
                });
            }
            return new Cursor(resourceStream.Stream);
        }

General Discussions

answered on 22 Oct 2018

5 answers

590 views

Glyph-Icons during design time

I like the new Glyph-feature and use it in my recent project. Unfortunately the Glyph-Icons are not visible during design time in VS 2013, I can only see an empty rectangle. What do I have to do so these icons are also visible during design?

Regards
Heiko

General Discussions

answered on 22 Oct 2018

0 answers

107 views

PercentOfColumnTotal has NAN

Hi

The zero data caused NAN case.

Please check the data of the attached file.

Is there any way to remove NAN?

My code.

dataprovider.AggregateDescriptions.Add(new PropertyAggregateDescription()

{

PropertyName = "AAA",

AggregateFunction = AggregateFunctions.Sum,

TotalFormat = new PercentOfColumnTotal()

});

PivotGrid

asked on 22 Oct 2018

1 answer

73 views

dynamic create Series ,difficult to create TrackBallInfoTemplate

Chart.Series.Add(new LineSeries
{
CategoryBinding = binding,
ValueBinding = ...,
StrokeThickness = 1,
Stroke = ...,
ItemsSource = vm.Datas,
TrackBallInfoTemplate = // difficult to create
});

TrackBallInfoTemplate is difficult to create, how can i only set a stringformat to use trackballinfo

ChartView

answered on 20 Oct 2018