Questions on UI for WPF Forum

2 answers

175 views

Custom Slot class for special slot selector

Hi,

I want to derive from Telerik.Windows.Controls.ScheduleView.Slot to add some extra information as IsHoliday to my special slots and than use this in my special slot style selector. My scheduler binds to an ObservableCollection<CSchedulerSlot> as SpecialSlotsSource.
But the "object item" which is passed to SelectStyle method of the selector is always of type Slot instead of my custom class CSchedulerSlot. The following code does not work, becuase i always get a an InvalidCastException.

public override Style SelectStyle(object item, DependencyObject container, ViewDefinitionBase activeViewDefinition)

{

FrameworkElement elem = container as FrameworkElement;

if (elem == null)

return base.SelectStyle(item, container, activeViewDefinition);

CSchedulerSlot slot = (CSchedulerSlot)item;

What I'm doing wrong? Is there a workaround for this?

thanks in advance,

michael

ScheduleView

answered on 03 Aug 2011

4 answers

139 views

Indentation in RadRichTextBox (Version 2011.1.315.35)

During Binding of RichTextBox with HTMLDataProvider the indentation is not getting reflected .I am attaching a sample code for your reference

HtmlDataProvider ht = new HtmlDataProvider();

ht.RichTextBox = RadRTB;

ht.Html = "<!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd><

html xmlns=http://www.w3.org/1999/xhtml><head><meta http-equiv=Content-Type content=text/html; charset=utf-8 /><title>Untitled</title><style type=text

/css>  .p_D6859706 { margin: 0px 0px 12px 200px;text-align: left;text-indent: 0pt;padding: 0px 0px 0px 0px; ;font-size: 32px}   .s_E6FD2046 {padding-right: 100px; font-family: 'Verdana';font-style: Normal;font-weight: normal;color: #000000; }   </

style></head><body><p class=p_D6859706><span class=s_E6FD2046>TEST</span></p></body></html>";

RichTextBox

answered on 03 Aug 2011

2 answers

176 views

How to use the SeriesDefinition SeriesStyle

Hi,

I'm trying to use the SeriesStyle property of the StackedSeriesDefinition to set several properties for a lot graph but i get an XamlParseError :
Set property 'System.Windows.Style.TargetType' threw an exception
"'HorizontalStackedBarSeriesDefinition' type must derive from FrameworkElement or FrameworkContentElement."

Here is the xaml

<telerik:RadChart x:Name="chart7" ItemsSource="{Binding SampleData2}">

<telerik:RadChart.SeriesMappings>

<telerik:SeriesMapping LegendLabel="SUCCESS" CollectionIndex="0">

<telerik:SeriesMapping.SeriesDefinition>

<telerik:StackedBarSeriesDefinition SeriesItemLabelStyle="{StaticResource CustomSerieItemchart7}" SeriesStyle="{StaticResource MinimizedStackedBarSeriesDefinitionStyle}" />

</telerik:SeriesMapping.SeriesDefinition>

....

<Style x:Uid="Style_26"

x:Key="MinimizedStackedBarSeriesDefinitionStyle"

TargetType="{x:Type telerik:HorizontalStackedBarSeriesDefinition}">

<Setter x:Uid="Setter_216"

Property="ShowItemLabels"

Value="false" />

<Setter x:Uid="Setter_217"

Property="LabelSettings">

<Setter.Value>

<telerik:BarLabelSettings x:Uid="telerik:BarLabelSettings_1"

LabelDisplayMode="Outside"

ShowConnectors="False" />

</Setter.Value>

</Setter>

</Style>

Am i using the wrong property ?
Thanks
- Cedric -

Chart

answered on 03 Aug 2011

3 answers

182 views

Template Axis item label

Hi,
is it possible to template the XAxis item label displayed to replace them by an icon ?

I have found

<telerik:ChartArea.AxisX>

<telerik:AxisX x:Uid="telerik:AxisX_1">

<telerik:AxisX.AxisStyles>

<telerik:AxisStyles ItemLabelStyle="{StaticResource StrategyMinItemLabelStyle}" />

</telerik:AxisX.AxisStyles>

</telerik:AxisX>

</telerik:ChartArea.AxisX>

But what is the targettype of my StrategyMinItemLabelStyle style ?
I want to display an icon in place of text .

- Cedric -

Chart

answered on 03 Aug 2011

1 answer

310 views

TabControl Duplicating Tabs

I am using the MVVM pattern (with MVVM light) and have a Telerik TabControl bound to a collection of ViewModels like this:

<telerik:RadTabControl x:Name="tabs" telerik:Theming.Theme="Windows7" BackgroundVisibility="Collapsed" TabStripPlacement="Left" TabOrientation="Vertical" DisplayMemberPath="Name" IsContentPreserved="True"

ItemsSource="{Binding ReviewViewModels, UpdateSourceTrigger=PropertyChanged}" ContentTemplateSelector="{StaticResource ReviewTemplateSelector}" Align="Right"

ItemContainerStyle="{StaticResource ReviewCategoryTabStyle}" SelectedIndex="{Binding SelectedIndex}" />

The ReviewViewModels collection is an ObservableCollection<object> because I have one static tab along with any number (generally 2-3) of user-selected tabs based on items selected in another window. Since the ViewModels are drastically different I had to be as generic as possible for the root collection and then use a ContentTemplateSelector to show the appropriate content.

The issue I have is occasionally one of the tabs is duplicated, even though the underlying source doesn't reflect this. It's very intermittent, but I just happened to catch it on my screen while working on something with the app (Phase I is still in development) and the screen showed four tabs (one was a duplicate) and when I hit a button on the view to catch in a breakpoint I could see the underlying collection only contained three total items (which was expected). I can't seem to figure out where this other item is coming from as when data retrieval is complete for the tab content I explicitely instantiate the collection at that time and loop through to add the items like this:

Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.Send, new Action(() =>

{

this.ReviewViewModels = new ObservableRangeCollection<object>();

//add the categories - this is the only place the items are added

foreach (var cat in this.ReviewCategories)

this.ReviewViewModels.Add(new ReviewCategoryViewModel(cat));

//add a new notes viewmodel

this.ReviewViewModels.Add(new ReviewNotesViewModel());

//collection size shows three entries (two ReviewCategoryViewModel and one ReviewNotesViewModel), tabs occasionally show four at this point

this.SelectedIndex = 0;

this.IsBusy = false;

}));

Any suggestions on this as to where to even start looking? I am using Q2 2011.

Edit: It just happened again and the interesting thing is the fourth tab (the duplicate) is selected even though (as indicated above) I set the selected index to 0. I hit a button on the view that takes me to the VM and did a couple of screenshots showing the data is correct:

http://www.clearsolgroup.com/images/immediate-window.png (Immediate Window - shows three total ViewModels [expected] and SelectedIndex is 0)

http://www.clearsolgroup.com/images/duplicate-tab.png (UI of the duplicate tab, with the fourth being selected even though SelectedIndex is 0 and only three ViewModels exist).

Again, this is VERY interimmittent and reproducing it is intentionally possible. It just happens occasionally.

TabControl

answered on 03 Aug 2011

1 answer

136 views

ElementName Binding in CellStyle or Cell Template

Hi,

I am trying to do a ElementName binding in CellTemplate, however when I follow the solution on this page
http://www.telerik.com/help/wpf/gridview-troubleshooting-elementname-binding.html
The example code doesn't work.

Can you take a look?

GridView

answered on 03 Aug 2011

1 answer

143 views

TimeBar combine spline line and step line

Hi,

Is it possible to use a spline line and a step line in a TimeBar.

Kind regards

TimeBar

answered on 03 Aug 2011

1 answer

58 views

Associating a legend with a ChartArea - Is Legend or LegendName better?

Hi,

Reviewing the documentation and samples, I've noticed two different ways of associating a legend with a chart area. Given I have defined:

<telerik:ChartLegend x:Name="legend">

I can either associate with a chart area with LegendName:

<telerik:ChartArea LegendName="legend">

or bind it to the Legend property:

<telerik:ChartArea Legend="{Binding ElementName=legend}">

Which is the preferred way to associate a chart legend? Are there advantages/disadvantages with either way?

Kind regards,
Dave.

Chart

answered on 03 Aug 2011

3 answers

127 views

Replacing grid row with row that have one cell without changing its template

Hi,

I want to create special rows that have only one column (i.e. column span for a specific row).

So I created ControlTemplate with that single column, created a Style that change the template property to the new template and created RowStyleSelector that uses that template when needed. That worked but created a row that doesn't have the IndicatorPresenter at the start of the row.

You can see the picture..

Can I merge cells at the grid and stay with the default template?

Or how can I make sure that the IndicatorPresenter will appear with the same styles.

GridView