Questions on UI for WPF Forum

3 answers

136 views

Issue on Grouped Row Click for VirtualQueryableCollectionView

Hello Telerik,

I am having a very strange issue when clicking on a row of a grouped grid populated by a VirtualQueryableCollectionView object

It turns out it duplicates itself.

I simulated it in the most simple solution I could think of. Check the attached pictures.

Please heIp me find a workaround for this issue.

The database I used contains only one table, having 4 rows on it.

And here is my code:

MainWindow.xaml

<Window x:Class="GroupingRowClickIssue.MainWindow"

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

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

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

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

xmlns:local="clr-namespace:GroupingRowClickIssue"

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

mc:Ignorable="d"

Loaded="Window_Loaded"

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

<Grid>

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

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Name}"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Type}"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</Grid>

</Window>

MainWindow.xaml.cs

using System.Windows;

using TelerikVirtualization;

namespace GroupingRowClickIssue

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

DataContext = new ViewModel();

}

private void Window_Loaded(object sender, RoutedEventArgs e)

{

((ViewModel)DataContext).Load();

}

ViewModel.cs

using PropertyChanged;

using Telerik.Windows.Data;

namespace TelerikVirtualization

{

[ImplementPropertyChanged]

public class ViewModel

{

public VirtualQueryableCollectionView View { get; set; }

Controller controller;

public ViewModel()

{

controller = new Controller();

}

public void Load()

{

View = controller.GetUsers();

}

Controller.cs

using GroupingRowClickIssue;

using System.Data;

using System.Linq;

using Telerik.Windows.Data;

namespace TelerikVirtualization

{

public class Controller

{

public VirtualQueryableCollectionView GetUsers()

{

DataClasses1DataContext db = new DataClasses1DataContext("Application Name=test;Data Source=WS-VRC;Initial Catalog=SimpleDB;User ID=sa;Password=App12345");

var data = from item in db.SimpleTables

select new User

{

Name = item.Name,

Type = item.Type

};

VirtualQueryableCollectionView view = new VirtualQueryableCollectionView(data) { LoadSize = 30, VirtualItemCount = data.Count() };

return view;

}

public class User

{

public string Name { get; set; }

public string Type { get; set; }

}

GridView

answered on 07 Oct 2016

1 answer

174 views

Add IsUndoEnabled property for TextBoxes

We would like to disable the Undo feature of the TextBoxes that are auto-created for string properties.

It interferes with our global Ctrl+Z undo command when the TextBox in the PropertyGrid are keyboard focused.

Thanks.

PropertyGrid

answered on 07 Oct 2016

2 answers

158 views

RadGridView - background

Hi,

I'm trying to change background colour for cells with value = "NO".

I found in one of the demo example this code:

<telerik:StyleRule Condition="UnitPrice > 10">
<Style TargetType="telerik:GridViewCell" BasedOn="{StaticResource GridViewCellStyle}">
<Setter Property="Background" Value="{telerik:Windows8Resource ResourceKey=AccentBrush}" />
<Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey=MainBrush}" />

</Style>
</telerik:StyleRule>

Could I use StyleRule and Condition for string values like below ?

<telerik:StyleRule Condition="MyColumn = 'YES' ">

It doesn't work for me ...

GridView

answered on 07 Oct 2016

8 answers

186 views

visualizationlayer's objects zindex seems to change with zoomin zoomout

hi dear telerik team

i have two MapLineViews in a visualization layer on the map (like a blue one and a red one). these two lines are exactly (or partly) on eachother.

at first we assume the red one is on top when we zoom out and zoom in sometimes this order changes! and the blue one comes on top.

i know the visualizationlayer redraws the items when the zoom changes but why does it change the order and how can i stop this from happening

thank you very much in advance for your help

Map

answered on 07 Oct 2016

1 answer

109 views

SectionBreakType.Continuous can not be found

Hi, in your manual you have mentioned that for sections four options are available which I have added them (in here: http://docs.telerik.com/devtools/wpf/controls/radrichtextbox/document-elements/features-section) but my problem is that I could not find SectionBreakType.Continuous. my telerik version is 2016. Why can't I find that?

RichTextBox

answered on 07 Oct 2016

1 answer

174 views

Able to select a PropertyDefinition after Item set to null

To test:

Create a class with properties and set the RadPropertyGrid.Item to an instance of that class.

Select one of the properties in the grid.

Set the Item to null. (Clear selection if your Item is binded to some listbox selection, for example).

The property grid should be empty now. Click in the empty space.

Notice that you can see the previous selected property name in the Description Pane.

More importantly to us for CanExecute calls, RadPropertyGrid.SelectedPropertyDefinition is not null. (even though Item==null).

This is a reference leak also since you are holding onto references after Item is set to null. :(

(Looking at the code, it looks like when Item property changes, you are setting SelectedPropertyDefinition to null, but you aren't clearing the SelectedPropertyDefinitions collection. As a result, the RadPropertyGrid.OnMouseLeftButtonDown calls SetSelectedPropertyDefinition(), and in there, it simply checks for any items in SelectedPropertyDefinitions and calls LastOrDefault(). )

PropertyGrid

answered on 07 Oct 2016

9 answers

430 views

How can I filter on all the hierarchy but not only top level?

I want to filter the data of all the level, however, it seems treelistview only filter data on top level.
How to do that?

TreeListView

answered on 07 Oct 2016

3 answers

221 views

radscheduleview is not refreshing the UI when we click next date, DayViewDefinition, WeekViewDefinition and MonthViewDefinition buttons in WPF

I have radscheduleview control which is not getting refreshed when we navigate from one view to other, previous page design is getting cashed. The block lines are not getting refreshed in the control. because of which the design of the control is getting disturbed.. can someone help please.[Getting multiple vertical lines]

ScheduleView

answered on 07 Oct 2016

1 answer

1.0K+ views

RadGridView - disable row highlight

Hi,

I´m using RadGridView and in the row selection (SelectedItem="{Binding RowSelected, Mode=TwoWay}") I´m loading other View and when I go back, the clicked row is still highlighted. How could I disable the row highlighted (cache) when the GridView is showed.

Best regards

GridView

answered on 07 Oct 2016

4 answers

405 views

Where does RadMap cache tiles?

We've added the RadMap control to our WPF application. I have a custom tile provider that interfaces with a home-grown tile service. Tee provider basically makes HTTP calls to a custom URL in order to retrieve tiles. This provider does no caching of its own.

However, a tester here had map data for the US only, then uninstalled that map data and installed map data for Peru. When they went back into our application, they were able to see roads on Long Island, which they shouldn't have seen. For this reason, we believe that the RadMap control itself is caching tiles.

Does RadMap cache tiles? If so, where is this cache and how can we empty it?

Here is the code for the custom tile provider. As you can see, there's no code for caching in here at all.

public class SelexTileSource : TiledMapSource {

public string BaseURL { get; set; }

public SelexTileSource() : base( 1, 20, 256, 256 ) { }

public override void Initialize() {

this.RaiseIntializeCompleted();

}

protected override Uri GetTile( int tileLevel, int tilePositionX, int tilePositionY ) {

int zoomLevel = ConvertTileToZoomLevel( tileLevel );

string url = string.Format( BaseURL,

zoomLevel.ToString( CultureInfo.InvariantCulture ),