Questions on UI for WPF Forum

14 answers

528 views

ChartSeriesProvider doesn't work with LegendSettings.

I use dynamic numer of SplineSeries in my chart (so I use ChartSeriesProvider) and I want to display Chart Legend in the right upper corner of chart. But ChartSeriesProvider doesn't work with LegendSettings. An empty chart area is displayed. Please see 'EmptyChartArea.PNG' file attached. I did the following XAML markup:

<UserControl x:Class="DeviceReading.Views.AutomaticGainControlView"

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"

xmlns:prism="http://prismlibrary.com/"

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"

xmlns:local="clr-namespace:DeviceReading"

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

prism:ViewModelLocator.AutoWireViewModel="True">

<UserControl.Resources>

<telerik:ChartPalette x:Key="customPalette">

<telerik:ChartPalette.SeriesEntries>

<telerik:PaletteEntryCollection SeriesFamily="Line">

<telerik:PaletteEntry Fill="Blue" Stroke="Blue"/>

<telerik:PaletteEntry Fill="Crimson" Stroke="Crimson"/>

<telerik:PaletteEntry Fill="Green" Stroke="Green"/>

<telerik:PaletteEntry Fill="DarkOrange" Stroke="DarkOrange"/>

<telerik:PaletteEntry Fill="Purple" Stroke="Purple"/>

<telerik:PaletteEntry Fill="DarkTurquoise" Stroke="DarkTurquoise"/>

<telerik:PaletteEntry Fill="SaddleBrown" Stroke="SaddleBrown"/>

<telerik:PaletteEntry Fill="SlateBlue" Stroke="SlateBlue"/>

</telerik:PaletteEntryCollection>

</telerik:ChartPalette.SeriesEntries>

</telerik:ChartPalette>

<local:StringToLegendSettingsConverter x:Key="StringToLegendSettingsConverter"/>

</UserControl.Resources>

<telerik:RadCartesianChart Visibility="{Binding IsAbsoluteSplineChartVisible}" Palette="{StaticResource customPalette}">

<telerik:RadCartesianChart.Resources>

<Style TargetType="telerik:PanZoomBar">

<Setter Property="Visibility" Value="Collapsed"/>

</Style>

</telerik:RadCartesianChart.Resources>

<telerik:RadCartesianChart.HorizontalAxis>

<telerik:DateTimeContinuousAxis MajorStepUnit="Second" LabelInterval="5" LabelFormat="hh:mm:ss" FontFamily="Segoe UI" PlotMode="OnTicks" TickOrigin="{Binding AlignmentDate}"/>

</telerik:RadCartesianChart.HorizontalAxis>

<telerik:RadCartesianChart.VerticalAxis>

<telerik:LinearAxis FontFamily="Segoe UI" Title="Децибелы [Дб]" />

</telerik:RadCartesianChart.VerticalAxis>

<telerik:RadCartesianChart.Grid>

<telerik:CartesianChartGrid MajorLinesVisibility="XY" MajorXLineDashArray="3,4" MajorYLineDashArray="3,4"/>

</telerik:RadCartesianChart.Grid>

<telerik:RadCartesianChart.SeriesProvider>

<telerik:ChartSeriesProvider Source="{Binding SeriesData}">

<telerik:ChartSeriesProvider.SeriesDescriptors>

<telerik:CategoricalSeriesDescriptor CategoryPath="Category" ValuePath="Value" ItemsSourcePath="ChartPoints">

<telerik:CategoricalSeriesDescriptor.TypeConverter>

<local:SeriesTypeConverter/>

</telerik:CategoricalSeriesDescriptor.TypeConverter>

<telerik:CategoricalSeriesDescriptor.Style>

<Style TargetType="telerik:SplineSeries">

<Setter Property="LegendSettings" Value="{Binding SeriesName, Converter={StaticResource StringToLegendSettingsConverter}}"/>

</Style>

</telerik:CategoricalSeriesDescriptor.Style>

</telerik:CategoricalSeriesDescriptor>

</telerik:ChartSeriesProvider.SeriesDescriptors>

</telerik:ChartSeriesProvider>

</telerik:RadCartesianChart.SeriesProvider>

<telerik:RadCartesianChart.Behaviors>

<telerik:ChartPanAndZoomBehavior DragMode="Pan" ZoomMode="Both" PanMode="Both"/>

</telerik:RadCartesianChart.Behaviors>

</telerik:RadCartesianChart>

</UserControl>

Below is StringToLegendSettingsConverter class:

public class StringToLegendSettingsConverter : IValueConverter

{

public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

{

return new SeriesLegendSettings { Title = "" + value };

}

public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

{

throw new NotImplementedException();

}

Below is SeriesModel class (with Rusian remarks).

public class SeriesModel

{

#region Constructors

/// <summary>

/// Создаёт экземпляр SeriesModel по умолчанию.

/// </summary>

public SeriesModel() { }

/// <summary>

/// Создаёт экземпляр SeriesModel по заданным параметрам

/// </summary>

/// <param name="chartPoints">Тип серии (вид графика).</param>

/// <param name="seriesType">Коллекция точек, представляющая серию (кривую графика).</param>

public SeriesModel(RadObservableCollection<ChartPoint> chartPoints, string seriesName, string seriesType = "Spline")

{

this.ChartPoints = chartPoints;

this.SeriesName = seriesName;

this.SeriesType = seriesType;

}

#endregion

#region Properties

/// <summary>

/// Тип серии (вид графика). Т.е. состоит ли график кривой из отрезков, просто соединяющих точки (LineChart),

/// либо места, в которых отрезки соединяются с точками, имеют закруглённую форму (SplineCahrt).

/// </summary>

public string SeriesType { get; set; }

/// <summary>

/// Имя серии. Например, "1-й луч", "2-й луч" и т.д.

/// </summary>

public string SeriesName { get; set; }

/// <summary>

/// Коллекция точек, представляющая серию (кривую графика).

/// </summary>

public RadObservableCollection<ChartPoint> ChartPoints { get; set; }

#endregion

}

Below is using SeriesModel Instance in 'AutomaticGainControlViewModel' class (ViewModel of 'AutomaticGainControl' chart) constructor for asigning to SeriesName property (with Rusian remarks):

. . . . . . . . . . . . . . .

// Создать и начать заполнять коллекцию точек для графиков кривых абсолютных значений.

this.SeriesData = new RadObservableCollection<SeriesModel>();

// Добавить точку для графика кривой коэффициента усиления на первом луче в прямом направлении.

series = new SeriesModel();

series.SeriesType = "Spline";

series.SeriesName = "P1AB";

series.ChartPoints = new RadObservableCollection<ChartPoint>();

automaticGainControl = this.Data[0].Value;

series.ChartPoints.Add(new ChartPoint(new DateTime(this._currentDate.Ticks), automaticGainControl));

this.SeriesData.Add(series);

// Добавить точку для графика кривой коэффициента усиления на первом луче в обратном направлении.

series = new SeriesModel();

series.SeriesType = "Spline";

series.SeriesName = "P1BA";

series.ChartPoints = new RadObservableCollection<ChartPoint>();

automaticGainControl = this.Data[1].Value;

series.ChartPoints.Add(new ChartPoint(new DateTime(this._currentDate.Ticks), automaticGainControl));

this.SeriesData.Add(series);

// Добавить точку для графика кривой коэффициента усиления на втором луче в прямом направлении.

series = new SeriesModel();

series.SeriesType = "Spline";

series.SeriesName = "P2AB";

series.ChartPoints = new RadObservableCollection<ChartPoint>();

automaticGainControl = this.Data[2].Value;

series.ChartPoints.Add(new ChartPoint(new DateTime(this._currentDate.Ticks), automaticGainControl));

this.SeriesData.Add(series);

// Добавить точку для графика кривой коэффициента усиления на втором луче в обратном направлении.

series = new SeriesModel();

series.SeriesType = "Spline";

series.SeriesName = "P2BA";

series.ChartPoints = new RadObservableCollection<ChartPoint>();

automaticGainControl = (ushort)this.Data[3].Value;

series.ChartPoints.Add(new ChartPoint(new DateTime(this._currentDate.Ticks), automaticGainControl));

this.SeriesData.Add(series);

. . . . . . . . . . . . . .

And, just in case, I bring a 'SeriesTypeConverter' converter class source code here:

public class SeriesTypeConverter : IValueConverter

{

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

{

SeriesModel seriesItem = value as SeriesModel;

if (seriesItem.SeriesType == "Spline")

{

return typeof(SplineSeries);

}

else

{

return typeof(LineSeries);

}

public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

{

throw new NotImplementedException();

}

What have I done wrong in my program that I have the empty chart. How to correct the error. Thank you very much in advance.

ChartView

answered on 10 Feb 2017

4 answers

485 views

Stacked bar charts for RadCartesianChart for 2012.1.326.40

Hi,

I am trying to build a stacked bar chart in wof 4.0 using telerik version 2012.1.326.40.

I am able to do so by using telerik:RadCartesianChart.SeriesProvider in 4.5 but as the SeriesProvider is absent in the earlier version it is hard for me to construct the same.

I am trying to achieve a chart attached.

Please advise.

ChartView

answered on 10 Feb 2017

0 answers

99 views

Modify RadWatermarkTextBoxPeer

Hi there,

We are dealing with Accesibility and looks like we can't modify the RadWatermakerTextBox.LocalizedControlType of the RadAutoCompleteBox. I am able to create a specific RadAutoCompleteBoxPeer but I didn't find the way to create a specific one for the RadWatermarkTextBox that contains the RadAutoCompleteBox. Any thoughts?

thanks!

jose

AutoCompleteBox

asked on 09 Feb 2017

1 answer

166 views

Text overlap on scroling

I am using RadGridView with editing capability. I am editing one item and then perform scroll down operation. At this point of time, the edit cell text is getting overlapped with other cell text.

Please suggest me, how to avoid this.

GridView

answered on 09 Feb 2017

2 answers

65 views

Panning support in RadImageEditor

Hi Team,

I have using R1 2017 telerik products and while using RadImageEditor, I need the feature of panning that you have used in your demos. And also found the documentation related to the same, please refer the below link.

http://docs.telerik.com/devtools/wpf/controls/radimageeditor/tools/panning

But IsPanningEnabled property is not working for me, could you please let me know to achieve this?

Regards,

Antony Raj

ImageEditor

answered on 09 Feb 2017

1 answer

198 views

Keeping visible y-values on zoomed graph when range changes

Hi, I'm using a RadCartesianChart with a LinearAxis as y-axis. The range for the y-axis is automatic (I haven't set Minimum or Maximum on the axis).

Vertical zoom is enabled, so the user can zoom to the range he likes. The problem is that the range of the viewed y-values changes when range of the line series changes. I understand this is probably by design, since you want to keep the relative values VerticalZoomRangeStart and VerticalZoomRangeEnd.

To make the problem clear, I'll use an example:

Let's say the range of the data is [0,10]. The user then zooms the y-axis to display the values [8,9]. Then the range of the data changes to [0,20] and the range of the y-aixs is recalculated. The range the user sees now automatically changes from [8,9] og [16,18], since the zoom is still [0.8,0.9]. Is there a way to avoid this without manually setting the range of the y-axis?

From the documentation it says : "Maximum: Gets or sets the user-defined maximum of the axis. By default the axis calculates the maximum, depending on the maximum of the plotted data points."

Is there a way to get the calculated maximum? I would then be able to calculate new values for vertical zoom to keep the range of the y-values the same. I noticed that the calculated maximum is not necessarily the same as maximum of the dataset, since you make sure the calculated maximum is a nice round number.

ChartView

answered on 09 Feb 2017

3 answers

121 views

Dynamically adjust position of informationLayer items

I have a time zone map I've built that generates data 'bubbles' with a city name and local time from a datasource. Works great BUT the bubbles frequently overlap. I'd like to hittest each one as it is rendered and float it away from any underlying bubble.

What event is fired/should I be looking for as the informationLayer items are created?

Map

answered on 09 Feb 2017

7 answers

395 views

Cannot Drag from Windows Explorer into WPF RadTreeView

Hello Guys,

I am having issues to do this. I have setup the following RadTreeView control:

<telerik:RadTreeView AllowDrop="True"
telerik:AnimationManager.IsAnimationEnabled="False"
Name="trvModule" ItemsIndent="15"
IsLineEnabled="True"
IsRootLinesEnabled="False" FontSize="11"
IsDropPreviewLineEnabled="True"
IsDragDropEnabled="True"
IsLoadOnDemandEnabled="False"
DropExpandDelay="00:00:00"
BringIntoViewMode="HeaderAndItems"
/>

In the Code Behind I have the following:

DragDropManager.AddDragInitializeHandler(trvModule, New DragInitializeEventHandler(AddressOf OnDragInitialize), True)
DragDropManager.AddDragOverHandler(trvModule, AddressOf OnDragOver, True)
DragDropManager.AddDragDropCompletedHandler(trvModule, New DragDropCompletedEventHandler(AddressOf OnDragDropCompleted), True)
DragDropManager.AddDropHandler(trvModule, New DragEventHandler(AddressOf OnDropElement), True)

I have seen this working in Windows Apps, but I am not being able to make it work in my WPF application.

I saw this might be to a security problem?

Can you please provide any help to solve the problem?

I cannot attach the project for security restrictions, but I can paste any piece of code you need.

Any help will be much appreciated.

Thanks!

DragAndDrop

answered on 08 Feb 2017

3 answers

1.0K+ views

GridViewDataColumn DataTemplate with DataType is not working

Hey guys,
I've got a problem which is really frustrating. I am trying to display content based on its type in a RadGridView. Therefore I am using a DataTemplate referenced to a DataType. Sadly it seems like the DataType isnt beeing recognized at all. If I change the DataMemberBinding from "{Binding}" to a member of the object which is of type string - it is working but thats not what I need, i need it to be working with my own Data types(classes).

Code:

XAML

<Window x:Class="RadControlsWpfApp1.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"

xmlns:local="clr-namespace:RadControlsWpfApp1"

xmlns:System="clr-namespace:System;assembly=mscorlib"

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

<Grid>

<telerik:RadGridView x:Name="Grid" Grid.Column="1" Margin="11,10,9,50" Grid.Row="1" ItemsSource="{Binding}" >

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn IsReadOnly="True" Header="test" DataMemberBinding="{Binding}" >

<telerik:GridViewDataColumn.Resources>

<DataTemplate DataType="{x:Type local:Foo}">

<TextBlock Text="test" />

</DataTemplate>

</telerik:GridViewDataColumn.Resources>

</telerik:GridViewDataColumn>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</Grid>

</Window>

CS:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace RadControlsWpfApp1

{

public class Foo

{

public string Name { get; set; }

public string Value { get; set; }

}

public class Foo2

{

public string Name { get; set; }

public string Value { get; set; }

}

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

///

public partial class MainWindow : Window

{

public MainWindow()

{

var list = new List<object> { new Foo2() { Name = "Brian2", Value = "val2" }, new Foo() { Name = "Brian", Value = "val1" } };

InitializeComponent();

Grid.DataContext = list;

}

GridView