Questions on UI for WPF Forum

3 answers

79 views

Hi,

I'm new to developing and have downloaded a trial of the WPF controls.I am trying to follow an example explaining how to use the geocode features. I have tried a few different ways but i always get the same error "Object reference not set to an instance of an object." when it tries to run the code

Me.geocodeProvider.GeocodeAsync(geocodeRequest)

here is my full code any help would be greatly appreciated.

XAML

<Window x:Class="MainWindow"

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

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

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

Title="MainWindow" Height="480" Width="620">

<telerik:RadMap x:Name="RadMap" Height="540" VerticalAlignment="Top" ZoomLevel="7" Center="53.7500, -1.8333" MouseLocationIndicatorVisibility="Visible" NavigationVisibility="Collapsed" MapMouseDoubleClick="radMap1_MapMouseDoubleClick" MouseDoubleClickMode="None">

<telerik:RadMap.Provider>

<telerik:BingMapProvider Mode="Aerial" IsLabelVisible="True"

IsTileCachingEnabled="True"

ApplicationId="MY BING MAPS KEY" />

</telerik:RadMap.Provider>

<telerik:InformationLayer x:Name="informationlayer">

</telerik:InformationLayer>

></telerik:RadMap>

</Window>

VB

Imports Telerik.Windows.Controls.Map

Partial Public Class MainWindow

Dim geocodeProvider As BingGeocodeProvider

Dim geocodeLocation As Location

Public Sub New()

InitializeComponent()

End Sub

Private Sub WindowLoaded(ByVal sender As Object, ByVal e As RoutedEventArgs)

' Init geocode provider.

geocodeProvider = New BingGeocodeProvider() With { _

.ApplicationId = "MY BING MAPS KEY", _

.MapControl = Me.radMap _

}

AddHandler Me.geocodeProvider.GeocodeCompleted, AddressOf Me.Provider_GeocodeCompleted

' Me.geocodeProvider.GeocodeCompleted += New EventHandler(Of GeocodeCompletedEventArgs)(AddressOf Provider_GeocodeCompleted)

End Sub

Private Sub BeginGeocodingRequest()

Dim address As New Address() With { _

.CountryRegion = "UK", _

.PostalCode = "LS17 6HA" _

}

Dim geocodeRequest As New GeocodeRequest() With { _

.Address = address _

}

Me.geocodeProvider.GeocodeAsync(geocodeRequest)

End Sub

Private Sub Provider_GeocodeCompleted(ByVal sender As Object, ByVal e As GeocodeCompletedEventArgs)

Dim response As GeocodeResponse = e.Response

If response.Results.Count > 0 Then

Me.radMap.SetView(response.Results(0).BestView)

' Me.informationlayer.ItemsSource = response.Results(0).Locations

Me.informationlayer.ItemsSource = response.Results(0).Locations

End If

End Sub

Private Sub radMap1_MapMouseDoubleClick(ByVal sender As System.Object, ByVal eventArgs As Telerik.Windows.Controls.Map.MapMouseRoutedEventArgs)

Dim address As New Address() With { _

.CountryRegion = "UK", _

.PostalCode = "LS17 6HA" _

}

Dim geocodeRequest As New GeocodeRequest() With { _

.Address = address _

}

Me.geocodeProvider.GeocodeAsync(geocodeRequest)

End Sub

End Class

Thanks :)

Map

answered on 22 Feb 2012

1 answer

225 views

What property is this?

In the attached image, I need access to this property to control the height of the rows.

ScheduleView

answered on 22 Feb 2012

7 answers

335 views

Exception when binding to ListCollectionView with filter

If I bind a RadGridView to a ListCollectionView with a filter, and I chance a value in a Grid cell that causes the filter to return false for that row, I get an exception in the Grid cell.

Code to reproduce:

public class MyEntity : INotifyPropertyChanged

{

private bool _myBool;

public bool MyBool

{

get { return _myBool; }

set

{

_myBool = value;

PropertyChanged(this, new PropertyChangedEventArgs("MyBool"));

}

public event PropertyChangedEventHandler PropertyChanged;

}

public partial class MainWindow

{

public MainWindow()

{

InitializeComponent();

DataContext = this;

MyEntities = new ObservableCollection<MyEntity> { new MyEntity(), new MyEntity(), new MyEntity() };

MyCv = (ListCollectionView)CollectionViewSource.GetDefaultView(MyEntities);

MyCv.Filter = MyBoolFilter;

}

public ObservableCollection<MyEntity> MyEntities { get; set; }

public ListCollectionView MyCv { get; set; }

private bool MyBoolFilter(object item)

{

return !((MyEntity)item).MyBool;

}

<Window x:Class="GridViewTest.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">

<telerik:RadGridView ItemsSource="{Binding MyCv}"/>

</Window>

Steps to reproduce:
1. check one of the checkboxes in the grid
2. move focus to somewhere else

I use version Q3 2011 SP1, .Net 4.0

Is there a way around this problem?

GridView

answered on 22 Feb 2012

3 answers

223 views

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Hi,

Is possible to drag tile item without clicking the header? I need to drag the tile by clicking in the tile, and moving around holding the mouse button. The idea is to use this in a touch screen and I want the user clicking in the tile instead of the header. How can I do that?

Best regards,
Gonçalo Martins

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answered on 22 Feb 2012

2 answers

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Is there a way to create a stacked 100% BarSeries in a ChartView?

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answered on 22 Feb 2012

0 answers

62 views

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Hi @ All,

i have a checkbox in each row. But just in one row it is allowed to set the checkbox true. Is there a easy way to do that?

Thanks
ww

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asked on 22 Feb 2012

1 answer

152 views

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TextBoxRibbonUI localization doesn't work but same localization is working in radribbinbar which was the previous version in wpf controls.

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1 answer

116 views

Asynchronous assignment of Bing Provider

Hi,

I am using WCF data service to fetch spatial objects (polygon) from SQL Server database and render them on the information layer.Everything was working fine until I decided to have my calls Asynchronous, in which I have a callback method to assign my polygon list to a bind-enabled property on my ViewModel (PRISM).My view used to be slow and would hange due to both the synchronous WCF call and the bing provider assignment which seems to freeze the UI. Now my WCF call is Asynchronous and does not freeze the UI, but the bing provider assignment is still freezing the view for about 2 to 3 seconds.Is there any plan to change this provider effects on the UI ?

Thanks

Madani

Map

answered on 22 Feb 2012

5 answers

333 views

Changing the RadPane height

I've got a RadSplitContainer that contains three RadPaneGroup each with one RadPane. On a certain event, I want to "shrink" one of the RadPanes. Changing the RadPage height or maxheight didn't seen to make a difference but changing the parent RadPaneGroup does.

So in my code right now, on one click event when I want my RadPane to shrink, I change the RadPaneGroup's MaxHeight to 50. When I want it to expand again, I change the RadPaneGroup's MaxHeight back to PositiveInifinity. This works well but as soon as I change the height of the RadPaneGroup itself by grabbing the little separator between each RadPaneGroup with my mouse and dragging it; when my collapse event fires, the RadPaneGroup gets shrunk too much or not enough depending on whether I changed the height to be bigger or smaller than before.

It appears the value I set the MaxHeight to needs to change dynamically depending on the current ActualHeight of the RadPaneGroup but I can't seem to find at what factor this needs to change by or, more baffling, why it appears to be opposite depending on the way I changed the height of the RadPaneGroup (for example, if I make it bigger, I have to use a smaller number for the MaxHeight).

So first off, am I doing this wrong by playing with the MaxHeight? If not, how can I get this control whether it be the parent RadSplitContainer or the individual RadPaneGroups to change their height from/to a specific value and from/to infinity (fill)?

EDIT: I've also found that when I "shrink" the middle RadPaneGroup, it doesn't work the first time... then I expand it and shrink it again and, while it works, there is a large gap between it and the top RadPaneGroup.

Docking

answered on 22 Feb 2012

1 answer

118 views

Keyboard focus indicator

I've run into some somewhat strange behavior.

As I hover over items, the item gets highlighted in yellow. But if I then switch to navigating with the keyboard, the highlighted item is still shown, and now it's confusing as to which highlight is indicating the selection.

Is this expected behavior, and is there a way to control it?

TreeListView

answered on 22 Feb 2012