Questions on UI for WPF Forum

1 answer

123 views

[Solved] SeriesProvider exception when navigate with prism

Hi,

I have implemented a prism navigable application with a page which contains a RadChartView populated dynamically with a SeriesProvider. On the first navigable page I can manipulate the series collection and remove serie or add new serie. When I remove a serie, the RadChartBase class raise an exception in UpdateDynamicSeries method. I think it's link with the way that prism manage the page (assumption that RadChartView is not link to mainview).
You can found a short sample here.
Run the sample, go to the Content page and try to remove a serie, the exception occurs.
I'm using version 2015.1.225.45 of telerik dll with implicit theme.
Thanks for your help.
Luc

ChartView

answered on 31 Mar 2015

1 answer

247 views

UniformGrid-like arrange for RadDocking

Hi,

I'm intersted to make my RadDocking to order the inserted panes (in the corespond view-model) like the UniformGrid does...
For example let's assume I have 2 items in my collection of panes. I want them to be shown as two panes with the same width (the sum of their width is the total width of the RadDocking control), and when I programatically add an item to the binded collection, I want the first two items to be shown as their height is half of what they were, and in the second imaginary row I want the third pane to be shown with the same width as theirs.

If the user make some mess with panes, I want the dynamically added item to be docked to the right side. Is it a problem if I got pane that became a ToolWindow while there are another that are not ToolWindow at the moment?

Ho do I achieve that easily?

Thanks!

Docking

answered on 31 Mar 2015

3 answers

227 views

[Solved] Tab (key) navigation inside a context menu

Hi there,

We are using RadContextMenu to pop up a small editor with several TextBoxes. We would like our users to be able to navigate among the text boxes using the Tab key. However, this doesn't work -- tab does nothing.

The following is a trivial example of a ContextMenu with three text boxes. Click inside one TextBox and hit tab. I would expect it to cycle among the three tabs.

How can we enable this behavior, please?

Thanks!

-David

<Window x:Class="telerik_context_menu_taborder.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

Title="MainWindow" Height="350" Width="525">

<Grid>

<Rectangle Fill="Black" Width="100" Height="50">

<telerik:RadContextMenu.ContextMenu>

<telerik:RadContextMenu KeyboardNavigation.TabNavigation="Cycle" >

<Grid>

<Grid.RowDefinitions>

<RowDefinition />

</Grid.RowDefinitions>

<TextBox Grid.Row="0" Text="TextBox1" />

<TextBox Grid.Row="1" Text="TextBox2" />

<TextBox Grid.Row="2" Text="TextBox3" />

</Grid>

</telerik:RadContextMenu>

</telerik:RadContextMenu.ContextMenu>

</Rectangle>

</Grid>

</Window>

ContextMenu

answered on 31 Mar 2015

1 answer

146 views

RadMap performance in app with high memory usage

Hi guys,

My application typically uses high amount of memory, up to 1GB in some intensive cases. My machine has 12GB memory so no problem. In intensive cases, RadMap fails to respond after panning/zooming a couple of times. When profiled, the bottleneck is in Telerik.Windows.Controls.Map.TileSource.CreateBitmap(). I tried to used caching but not much improvement. Any advice?

This is some code for mockup

<Window x:Class="RadMapPerf.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

Title="MainWindow" Height="600" Width="800">

<Grid>

<telerik:RadMap x:Name="RadMap" Center="38.8993487,-77.0145665" UseDefaultLayout="False" ZoomLevel="7">

<telerik:RadMap.Provider>

<telerik:OpenStreetMapProvider IsTileCachingEnabled="True"/>

</telerik:RadMap.Provider>

</telerik:RadMap>

</Grid>

</Window>

public partial class MainWindow : Window

{

private readonly List<string> _memory = new List<string>();

public MainWindow()

{

InitializeComponent();

// fake memory usage

for (var i = 0; i < 100000000; i++)

_memory.Add("memory_usage");

}

Map

answered on 31 Mar 2015

2 answers

164 views

[Solved] RibbonView behavior when selected tab is removed

Hi,

It seems that since last release (2015.1.225.45) the behaviour of RibbonView has changed. Previously when the selected RibbonTab was removed the next was selected. Now no tab is selected even if I change the SelectedItemRemoveBehaviour property on the RibbonView.
Regards
Luc

RibbonView and RibbonWindow

answered on 31 Mar 2015

1 answer

112 views

Custom mapping between multiple ResourceType-s

Hello,
I have a RadScheduleView displaying Appointments for Room-s and Speaker-s resources using a TimelineViewDefinition:

<UserControl x:Class="Scheduler.Views.SchedulerView"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:views="clr-namespace:Scheduler.Views"

mc:Ignorable="d"

d:DesignHeight="300" d:DesignWidth="300">

<UserControl.DataContext>

<views:SchedulerViewModel/>

</UserControl.DataContext>

<Grid>

<telerik:RadScheduleView AppointmentsSource="{Binding Appointments}"

ResourceTypesSource="{Binding ResourcesTypes}" >

<telerik:RadScheduleView.ViewDefinitions>

<!--<telerik:DayViewDefinition />

<telerik:WeekViewDefinition />

<telerik:MonthViewDefinition/>-->

<telerik:TimelineViewDefinition MinTimeRulerExtent="1000" VisibleDays="2"

MinorTickLength="1h" MajorTickLength="6h" GroupTickLength="1d"

/>

</telerik:RadScheduleView.ViewDefinitions>

<telerik:RadScheduleView.GroupDescriptionsSource>

<telerik:GroupDescriptionCollection>

<telerik:DateGroupDescription />

<telerik:ResourceGroupDescription ResourceType="Room"/>

<telerik:ResourceGroupDescription ResourceType="Speaker"/>

</telerik:GroupDescriptionCollection>

</telerik:RadScheduleView.GroupDescriptionsSource>

<telerik:RadScheduleView.GroupHeaderContentTemplate>

<DataTemplate>

<TextBlock Text="{Binding FormattedName}" Width="70" Margin="10" VerticalAlignment="Center" />

</DataTemplate>

</telerik:RadScheduleView.GroupHeaderContentTemplate>

</telerik:RadScheduleView>

</Grid>

</UserControl>

using System.Collections.ObjectModel;

using Telerik.Windows.Controls;

using Telerik.Windows.Controls.ScheduleView;

namespace Scheduler.Views

{

public class SchedulerViewModel

{

public SchedulerViewModel()

{

ResourcesTypes = GenerateResourceTypes();

Appointments = new ObservableCollection<Appointment>();

}

public ObservableCollection<Appointment> Appointments { get; set; }

public ObservableCollection<ResourceType> ResourcesTypes { get; set; }

private ObservableCollection<ResourceType> GenerateResourceTypes()

{

var result = new ObservableCollection<ResourceType>();

var roomType = new ResourceType("Room");

var room1 = new Resource("Room Alfa");

var room2 = new Resource("Room Beta");

var room3 = new Resource("Room Gama");

roomType.Resources.Add(room1);

roomType.Resources.Add(room2);

roomType.Resources.Add(room3);

var speakerType = new ResourceType("Speaker");

var speaker1 = new Resource("Tom");

var speaker2 = new Resource("Bob");

var speaker3 = new Resource("John");

speakerType.Resources.Add(speaker1);

speakerType.Resources.Add(speaker2);

speakerType.Resources.Add(speaker3);

result.Add(roomType);

result.Add(speakerType);

return result;

}

Is it possible to create a custom mapping between Room-s and Speaker-s so that for "Room Alfa" and "Room Beta" only two speakers would be displayed "Bob" and "John" (only "Bob" and "John" have access to "Room Alfa" and "Room Beta"); and for "Room Gama" to display all the speakers "Tom", "Bob", "John" (all speakers have access to "Room Gama").

Please see the attached file for more details.

Thank you,
Marius

ScheduleView

answered on 31 Mar 2015

3 answers

341 views

GridViewScrollViewer

I would like to ask can we apply the blur effect(fading effect) on the edges of telerik gridviewscrollviewer?
Thanks

GridView

answered on 31 Mar 2015

1 answer

118 views

Multiple HorizontalAxis show

Hi,

If I use one chartview to show 5+ line series, the series shares one common VerticalAxis, but each one of them has it's own HorizontalAxis(because each of them has different length ).
All of the 5+ HorizontalAxis are shown on the bottom, If I show them all at same time, the chart looks ugly, so I want show only one HorizontalAxis at one time, but use a button to allow user to swith to the next HorizontalAxis. How to do that in MVVM?
Or is there any better way to show series with different HorizontalAxis?

Regards Yang

ChartView

answered on 31 Mar 2015

4 answers

556 views

Multiselect yet?

I've been reading a bunch of forum posts from 2011 about Multi Select in the ComboBox being on the dev track.

Is it here yet? How can I do multiselect in a RadComboBox (WPF) and read back the selected items in codebehind?

Here is what I have so far (from those old posts)

<DataTemplate x:Key="RadComboBoxItemTemplate">

<CheckBox Content="{Binding}"

IsChecked="{Binding Path=IsSelected,Mode=TwoWay}"

Height="16" HorizontalAlignment="Left" Margin="2"

VerticalAlignment="Top" />

</DataTemplate>

<DataTemplate x:Key="SelectionBoxTemplate">

<TextBlock Text="{Binding SelectedItemsText,Mode=TwoWay}" />

</DataTemplate>

<telerik:RadComboBox Name="cb_Others"

ItemTemplate="{StaticResource RadComboBoxItemTemplate}"

SelectionBoxTemplate="{StaticResource SelectionBoxTemplate}"

Grid.Column="1" Grid.Row="3" HorizontalAlignment="Stretch"

VerticalAlignment="Stretch" Margin="3,3,6,3"/>

I load the control in codebehind like this:

cb_Others.ItemsSource = AvailableOthers; // where AvailablesOthers is a List<string>

This almost works, it displays my items and lets me check the boxes, but I can't figure out how to read the selected items from codebehind.

Help?

ComboBox

answered on 31 Mar 2015

3 answers

349 views

Export to Visio and PDF Feature in Diagram control

Hi,
Currently we are using a third party controls for generating Diagram (Process Flowchart) within our WPF application.
we are planning to move to your Diagram control to get rid of dependencies on multiple libraries but the only problem that's stopping us is "Export to Visio & PDF Feature is missing from the Diagram control"
Do you have any plans to include these features in your next release Q2 2012

Regards
Manoj

Diagram

answered on 31 Mar 2015