Questions on UI for WPF Forum

3 answers

246 views

Showing Wait Cursor or Busy Indicator Whilst Chart Updates

Have a particular scenario that has me stumped and am open to suggestions.

Utilising a TImebar, Sparkline and RadChart [Line chart] to view 3 months of 15 minute data points [so ~8640 points]

Generally the main chart is set to display a months data, with the timebar being used to select varieous periods to view.

The Following apply

1. Cant use sampling all the points nees to be visible [I know, I know.....]
2. Chart is bound to an observable collection, when the timebar selection changes, the collection is recreated from new by seleting a subset from the larger dataset [in another collection]
3. Using the simplest view of the chart possible, all animations off, not point marks, no gridlines

The problem is that there is always an appreciable delay whilst the radchart is re-rendered [1-2 seconds].
I can accept this performance, the issue is more of making the user aware of the activity rather than a UI freeze.

Tried setting the cursor in the TimebarSelectionChanged event, tried refreshing the data in a bachgound thread [didn't expect that to help really as the actual data refresh is virtually instant]

I feel the need for a BeginRender, Rendered pair of events to use.

Any suggestions much appreciated.

Chart

answered on 23 Feb 2012

5 answers

178 views

RadGauge Bezel Customization

Is there any way to customize the RadGauge Bezel? Specifically I would like to be able to change the color? This would be for linear or radial gauges. Thanks

Gauges

answered on 23 Feb 2012

5 answers

90 views

How to Maximize a certain tile window when loading?(Data was binded Dynamicly)

I have a 4 tilewindows and because it was created dynamicly so I'm unable to change each tilewindows' tilestate. How can I do that?

BTW I'm new to C# designing so if anyone knows how to do it, better come up with some examples, Thanks

TileView

answered on 23 Feb 2012

1 answer

86 views

Can't insert text between two PermissionRanges?

Hi

Not sure if I'm being thick here, but I can't figure this out after hours of trying.

If I have two Permission Ranges (I assume it applies to most other annotations, but this is what I've been using).

They appear on the page like this, separated by a carriage return:

[Range 1]
[Range 2]

If I set the Document Position inside Range 1, and use "MoveToNext()", it moves straight from one span into the next. I'm trying to insert something in-between the two, and I'm finding it impossible for the Document.Insert() not to end up inside one of the PermissionRanges!

Any pointers appreciated!

Charlie

RichTextBox

answered on 22 Feb 2012

2 answers

87 views

CheckBoxColumn not showing correct state when AutoGenerateColumns="False"

I have a RadGrid with a CheckBoxColumn and AutoGenerateColumns="False". When I check a checkbox in the CheckBoxColumn and press Tab, the CheckBox shows the unchecked state. When I next press Shift-Tab to place focus back in the cell, the CheckBox shows the checked state.

Very simple code:

<telerik:RadGridView

ItemsSource="{Binding MyCv}"

AutoGenerateColumns="False">

<telerik:RadGridView.Columns>

<telerik:GridViewCheckBoxColumn

DataMemberBinding="{Binding MyBool}"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

If I use autogenerated columns, the checkbox always shows the correct state. Am I doing something wrong or is this a bug?

I'm using the 2012 Q1 version

GridView

answered on 22 Feb 2012

2 answers

280 views

RadButtonGroup that is always accessible

Hi,

I have a requirement that I have a group of buttons that are always available (e.g. Help, Messaging, Refresh) and I'm looking for the best way to do this. A couple of thoughts I had were:

1) Have a button group with the horizontal alignment set to right on each of my tabs.
-It seems that I can't mix button groups with Left and Right HorizontalAlignment.
2) Have a second RadRibbonView with no application button in the top right corner with the static button group.
The second RadRibbonView doesn't display. If I use RadRibbonBar, I can get it do display, but it doesn't align with the other RadRibbonBar.
3) Create my own xaml to mimic the RadRibbonView
-Won't look quite right, and will be more work.

Can you tell me the best way to accomplish what I'm trying to do?

Thanks in advance,
Wyatt

RibbonView and RibbonWindow

answered on 22 Feb 2012

5 answers

159 views

Can't resize the Marker

Hi!

I'm using Linear Gauge in my full screen project, for example, it looks like this:

<telerik:RadVerticalLinearGauge x:Name="linearGauge" Width="100" Height="300">

<telerik:LinearScale x:Name="linearScale" Min="1" Max="12" >

<telerik:LinearScale.Indicators>

<telerik:Marker x:Name="indicator" Value="5"/>

</telerik:LinearScale.Indicators>

</telerik:LinearScale>

</telerik:RadVerticalLinearGauge>

I've understand how to scale the gauge, but I can't scale the marker. Method with changing RelativeHeight value I've found in help does'n work - the error is "The property 'RelativeHeight' was not found in type 'Marker'". Styling doesn't work either. Please help!

Thanks!

Gauges

answered on 22 Feb 2012

3 answers

86 views

WPF Geocode radMap error

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

232 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

344 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