Questions on UI for WPF Forum

3 answers

219 views

Can I/How do I bind to a date range from ChartPanAndZoomBehavior on a DateTimeContinuousAxis?

I'm new to using the RadCartesianChart and to WPF in general and I'm having a problem figuring out how to get a value out of the chart. I don't care if it's via command, event handler, binding, or whatever as long as I can get the data. I have a DateTimeContinuousAxis as my HorizontalAxis and 2 LineSeries both binding to list of objects that all have a DateTime on them and 2 other values. Each LineSeries binds to a different one of the values. This seems to work for getting the values on the chart.

Then I added a ChartPanAndZoomBehavior to the chart and I can now zoom into a portion of the whole, which is great and very slick. However, I want to make other things on the page show information based on the date range that the user is now examining data for. The closest I got was using the LayoutUpdated on part of it and getting the HorizontalAxis's ActualRange, but that didn't reflect the fact that you it had been zoomed.

So my question in a nutshell is: Using a DateTimeContinuousAxis as my HorizontalAxis and a ChartPanAndZoomBehavior, how can I get the date range that the user is looking to use for other controls?

My chart:

<chart:RadCartesianChart Margin="0"

HorizontalAlignment="Stretch"

VerticalAlignment="Stretch"

x:Name="LineGraph">

<chart:RadCartesianChart.HorizontalAxis>

<telerik:DateTimeContinuousAxis MajorStep="4"

MajorStepUnit="Week">

<telerik:DateTimeContinuousAxis.LabelTemplate>

<DataTemplate>

<StackPanel Orientation="Vertical">

<TextBlock HorizontalAlignment="Center" Text="{Binding StringFormat='MMMM dd'}" />

<TextBlock HorizontalAlignment="Center" Text="{Binding StringFormat=yyyy}" />

</StackPanel>

</DataTemplate>

</telerik:DateTimeContinuousAxis.LabelTemplate>

</telerik:DateTimeContinuousAxis>

</chart:RadCartesianChart.HorizontalAxis>

<chart:RadCartesianChart.VerticalAxis>

<telerik:LinearAxis Title="Count"

LabelInterval="1"

Minimum="0" />

</chart:RadCartesianChart.VerticalAxis>

<chart:RadCartesianChart.Grid>

<telerik:CartesianChartGrid MajorLinesVisibility="Y" StripLinesVisibility="Y">

<telerik:CartesianChartGrid.YStripeBrushes>

<SolidColorBrush Color="Transparent" />

<SolidColorBrush Opacity="0.15" Color="Gray" />

</telerik:CartesianChartGrid.YStripeBrushes>

</telerik:CartesianChartGrid>

</chart:RadCartesianChart.Grid>

<telerik:RadCartesianChart.Behaviors>

<telerik:ChartTrackBallBehavior ShowIntersectionPoints="True" />

<telerik:ChartPanAndZoomBehavior PanMode="Horizontal"

ZoomMode="Horizontal" />

</telerik:RadCartesianChart.Behaviors>

<telerik:LineSeries CategoryBinding="Day"

ClipToPlotArea="False"

CombineMode="Stack"

ItemsSource="{Binding TasksByDay}"

Stroke="{StaticResource OnTrackFillAccentBrush}"

StrokeThickness="0"

Tag="Area"

TrackBallInfoTemplate="{StaticResource trackBallInfoTemplate}"

TrackBallTemplate="{StaticResource trackBallOnTrackTemplate}"

ValueBinding="OnTrack" />

<telerik:LineSeries CategoryBinding="Day"

ClipToPlotArea="False"

CombineMode="Stack"

ItemsSource="{Binding TasksByDay}"

Stroke="{StaticResource OverDueFillAccentBrush}"

StrokeThickness="0"

Tag="Area"

TrackBallInfoTemplate="{StaticResource trackBallEmptyInfoTemplate}"

TrackBallTemplate="{StaticResource trackBallOverDueTemplate}"

ValueBinding="OverDue" />

</chart:RadCartesianChart>

The ItemsSource is a List<TasksDueOnDay>:

public class TasksDueOnDay

{

public DateTime Day { get; set; }

public int OnTrack { get; set; }

public int OverDue { get; set; }

public override string ToString()

{

return "TasksDueOnDay.ToString()";

}

ChartView

answered on 11 Jul 2013

5 answers

84 views

GridViewCell Excption

Hello

We generate GridViewDataColumn columns in run time

We give cell template and cell edit template

When the cell goes out from edit mode it throws

Null reference exception in TryConvertValueFromEditor at GriveViewCell Class

Dll version 2013.2.611.45

If I don’t give cell edit template this not happened.

Any ideas why this happens?

Best Regards

Ehud

GridView

answered on 11 Jul 2013

3 answers

168 views

BarSeries on DateTimeContinousAxys

Hi,

Is possible to set manually the columns width?
Look this example, all columns is overlappeds!

<telerik:RadCartesianChart>

<telerik:RadCartesianChart.HorizontalAxis>

<telerik:DateTimeContinuousAxis MaximumTicks="5" PlotMode="OnTicksPadded"/>

</telerik:RadCartesianChart.HorizontalAxis>

<telerik:RadCartesianChart.VerticalAxis>

<telerik:LinearAxis/>

</telerik:RadCartesianChart.VerticalAxis>

<telerik:BarSeries Name="mS">

</telerik:BarSeries>

<telerik:RadCartesianChart.Behaviors>

<telerik:ChartPanAndZoomBehavior/>

</telerik:RadCartesianChart.Behaviors>

</telerik:RadCartesianChart>

public MainWindow()

{

InitializeComponent();

for (int i = 0; i < 100;i++ )

mS.DataPoints.Add(new Telerik.Charting.CategoricalDataPoint() { Category = System.DateTime.Today.AddDays(i), Value = 5 });

}

Chart

answered on 11 Jul 2013

1 answer

389 views

Getting a FormatString threw an exception

I've placed a masked numeric input control onto a user control we're working on. When I run the app I get the following error:

System.Windows.Markup.XamlParseException occurred
HResult=-2146233087
Message='Set property 'Telerik.Windows.Controls.RadMaskedInputBase.FormatString' threw an exception.' Line number '291' and line position '48'.
Source=PresentationFramework
LineNumber=291
LinePosition=48
StackTrace:
       at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
InnerException: System.FormatException
       HResult=-2146233033
       Message=Format specifier was invalid.

I'm sure I've done something wrong, but am not sure what. Here's what the XAML looks like right now:

<telerik:RadMaskedNumericInput x:Name="txtClientNumber" FormatString="D6" MinWidth="80" Margin="3,0"

VerticalContentAlignment="Center" FontSize="15"

Value="{Binding ClientNumber, UpdateSourceTrigger=PropertyChanged}" Mask="#6" />

What we're trying to do is have the user enter a 6 digit integer value. The data type is an int (in C#), and SQL Server data type is also an int. So, what's the error of my ways?

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 11 Jul 2013

3 answers

110 views

GanttView grid and child tasks with different column headers

Hi,

Is it possible to have child tasks display in the grid on the GanttView with different columns/headers than the parent task, whilst still displaying normally on the time line portion of the control?

thanks

GanttView

answered on 11 Jul 2013

3 answers

433 views

AutocompleteBox dropdown template with grouping

Hi,

I have binded a collection of my custom objects which can be grouped according to one of its properties to the itemssource, i want to display the suggestion dropdown list as group in DropDownItemTemplate (as attached image can show)

1) Display a group title followed by the members belong to that group
2) Group title is not selectable
3) highlight a text that typed in the search box

Any help or direction is much appreciated!

thanks
wsw

AutoCompleteBox

answered on 11 Jul 2013

1 answer

111 views

Selection and Zoom interaction

Hi,

I ask if is possible to obtain this scenario:

1) A ChartPanAndZoomBehavior with zoom bar enabled and zoom mouse drag rectangle disabled
2) Allow mouse drag rectangle for points selection

Thank's
marc.

Chart

answered on 11 Jul 2013

1 answer

244 views

Drag Drop from Explorer

Hi. Trying to figure out the best way to have a RadListBox which supports internal reordering, and dragging in from an external source (files from Explorer). I'm a bit confused by the available parts: ListBoxDragDropBehavior, DragDropManager, DataConverter and the various events directly on RadListBox.

What SHOULD I do?

ListBox

answered on 10 Jul 2013

3 answers

63 views

DataFilter With Arabic or Persian Values

Hi,

I have a RadDaraFilter that has been bounded to a RadDataGrid.
The columns of table are (Name, LName, Tel) in SQL, So, the radDatafilter has been shown ("Name, LName, Tel").

How I could change the field of radDataFilter from "Name" to "Person's Name" or from "LName" to "Last Name", Please?
Thanks

DataFilter

answered on 10 Jul 2013

3 answers

124 views

how to enable context menu by default to all controls ?

Hi There,

I have the following two requirements:

1. Wanted to add help as a menu item to RadContextMenu item this will be a default menu item, i wanted to do it using a style/controltemplate.

2. wanted to enable Radcontextmenu by default so help will display on all controls when ever user right clicks on any control.

can you please tell me how i can do this?

Thanks in advance.

Regards,
Srinivas.

ContextMenu

answered on 10 Jul 2013