Questions on UI for WPF Forum

1 answer

81 views

RadChart shows wrong YValue. Does radchart resample YValues for a threshold ???

Hello,
I have a RadChart control. I would like to draw some important values.
I fixed X Axis range 0-720, And Y Axis range 0-240. The AutoRange properties are false.
I collect the ItemsSource data from a device. I think when I get some data over ~144 point RadChart re-samples the YValues and chart draws wrong(or rounded) values for me. And re-sampling goes on while data come from my source. My Y axis values getting smaller !?

I use LineSeriesDefinition . I do not won't something like anti-aliasing, smoothing. Can it be a kind of chart issue ?

I can see that I have "161" value as maximum(peak) YValue for my source and see it first. But when new values come I can see all values moved under 150 . re-sampling done ??? Why my YValues getting smaller although my bound values still contains higher values such as 161.

 <telerik:RadChart  x:Name="xRadChartECG1"  Grid.Column="1" ItemsSource="{Binding xSource}">
                                        <telerik:RadChart.DefaultView>
                                            <telerik:ChartDefaultView>
                                                <telerik:ChartDefaultView.ChartLegend>
                                                    <telerik:ChartLegend Visibility="Collapsed" />
                                                </telerik:ChartDefaultView.ChartLegend>
                                                <telerik:ChartDefaultView.ChartArea>
                                                    <telerik:ChartArea  EnableAnimations="False" LabelFormatBehavior="None" SmartLabelsEnabled="False" Background="White" >
                                                        <telerik:ChartArea.AxisY>
                                                            <telerik:AxisY AutoRange="False" MinValue="0" MaxValue="260"  AxisLabelsVisibility="Visible" StripLinesVisibility="Hidden" MinorTicksVisibility="Visible" MajorTicksVisibility="Visible" Visibility="Visible" />
                                                        </telerik:ChartArea.AxisY>
                                                        <telerik:ChartArea.AxisX >
                                                            <telerik:AxisX  IsDateTime="False" AxisLabelsVisibility="Visible" MajorTicksVisibility="Visible" Visibility="Visible" AutoRange="False" MinValue="0" MaxValue="720" />
                                                        </telerik:ChartArea.AxisX>
                                                        <telerik:ChartArea.ZoomScrollSettingsX>
                                                            <telerik:ZoomScrollSettings ScrollMode="None" />
                                                        </telerik:ChartArea.ZoomScrollSettingsX>
                                                    </telerik:ChartArea>
                                                </telerik:ChartDefaultView.ChartArea>
                                            </telerik:ChartDefaultView>
                                        </telerik:RadChart.DefaultView>
                                        <telerik:RadChart.SeriesMappings>
                                            <telerik:SeriesMapping>
                                                <telerik:SeriesMapping.SeriesDefinition>
                                                    <telerik:LineSeriesDefinition ShowPointMarks="False" ShowItemLabels="False">
                                                        <telerik:LineSeriesDefinition.Appearance>
                                                            <telerik:SeriesAppearanceSettings Fill="Green" Foreground="Green" Stroke="Green" StrokeThickness="1" />
                                                        </telerik:LineSeriesDefinition.Appearance>
                                                    </telerik:LineSeriesDefinition>
                                                </telerik:SeriesMapping.SeriesDefinition>
                                                <telerik:SeriesMapping.ItemMappings>
                                                    <telerik:ItemMapping FieldName="YValue"
                                             DataPointMember="YValue" />                                                  
                                                    <telerik:ItemMapping FieldName="Index"
                                             DataPointMember="XValue" />
                                                </telerik:SeriesMapping.ItemMappings>
                                            </telerik:SeriesMapping>
                                        </telerik:RadChart.SeriesMappings>
                                    </telerik:RadChart>
                                </Grid>

And the xSource is the below values . (same values comes for 10 times)

128
124
119
118
118
118
119
119
119
119
119
119
119
120
120
120
120
120
120
120
120
121
121
121
121
121
121
121
121
121
121
121
121
123
127
128
127
123
121
121
121
121
121
121
121
118
131
157
161
121
114
120
119
119
120
120
120
120
120
120
120
120
121
124
127
128
129
130
131
132
132

Thanks in advance

Chart

answered on 09 Dec 2013

6 answers

105 views

Grid + Persistence = No Footers?

So attached are 2 screens, one showing when I run with persistence and the other running without it... ShowColumnFooters is checked on cause I need it for column totals. Don't like when it stops working for some strange reason... I started to think it was the way I setup my settings popup for GridView but then I realized that it turns out to be when its loading settings for the Grid in code-behind. I am actually not doing anything weird, I can wipe out the Isostorage if you like in my profile to see if this causes the anomaly to go away. Its the first time I play with persistence, thought I was going to have to write my own stuff for this but ya'll did it for us.. :)

I don't do much in codebehind normally since I use MVVM for most everything but this is the one thing that I will drop in code behind when its strictly view related.

GridView

answered on 09 Dec 2013

2 answers

141 views

RadChart with date on x axis decimal on y axis from database in wpf

How to bind date and decimal value from database to telerik radchart lineseries in X And Y axis in WPF Usercontrol page

Chart

answered on 07 Dec 2013

2 answers

83 views

Syncing RadCarousel's Tooltips

Hello,

We have a custom User Control that presents custom tool icons in a RadCarousel. The data items that are in an Observable collection and used as the Item source have a ToolTip property. Is there an event that can be used to synchonize the Carousel's items to show that hint?

Thanks,

Reid

Carousel

answered on 06 Dec 2013

2 answers

182 views

Drop item only outside of TreeView

Hello,

i would like to only enable drag/drop effects outside of the TreeView. That means, when i drag the TreeViewItem inside TreeView, the DragDropEffects should be None, when the mouse is out of the TreeView, drop effects will be allowed.
1). I have tried the RadTreeView_ItemPrepared and set the PreparedItem.AllowDrop = false. But i can also drag a TreeViewItem and drop it after last TreeViewItem.
2). I tried to set DropPosition property of TreeViewDragDropOptions. But it could only be set to Inside :(

Any idea? Thanks.

Ivan

TreeView

answered on 06 Dec 2013

1 answer

287 views

how do I change the caret color ?

I have skinned the Auto Complete box to black then cursor is disappeared, can someone please help me to change the color of the caret to white.

Sharan

AutoCompleteBox

answered on 06 Dec 2013

0 answers

60 views

dropdown template

hi,

Is it possible to adjust the template so that the data is displayed in the DataGrid.
How to set Binding for columns that should be created automatically within the DataGrid.
How to avoid generating DataGrid for each row?
My data source is a DataTable and use FindMatchingItems function for custom filter.

by

AutoCompleteBox

asked on 06 Dec 2013

1 answer

145 views

Unexpected cursor position when deleting

Hi,
I'm using the newly released version (2013.3.1204.40) of RadMaskedTextInput control.
The control has a strange behavior when pressing "delete" button on the keyboard.

<telerik:RadMaskedTextInput Culture="" Mask="" MinWidth="300"

HorizontalContentAlignment="Right"

UpdateValueEvent="LostFocus" TextMode="PlainText" InputBehavior="Insert" />

1. Type 1234.
2. Put the cursor between 1 and 2.
3. Press "Delete".
Result:
The input becomes "134", but the cursor moves to the position before "1", while I expect the cursor to be between 1 and 3. Is it a bug?
My environment: VS 2010, Windows 7.

Regards,
Gong

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 06 Dec 2013

1 answer

139 views

AmbiguousMatchException When Rendering

I have a problem with the RadPropertyGrid of WPF Q3 2013, in .Net 4.0.
I'm trying to do a binding to a "Value" property of my data object "arg"

           propDef = new PropertyDefinition()
                    {
                        DisplayName = arg.Name.Value,
                        Description = arg.Description.Value,
                        Binding = new Binding()
                        {
                            Source = arg,
                            Path = new PropertyPath("Value", null)
                        },

                        EditorTemplate = this.argTemplateSelector.SelectTemplate(arg, this.PropertyGrid)
                    }

but when the PropertyGrid is rendered on the screen I get an AmbiguousMatchException.

PropertyGrid

answered on 06 Dec 2013

11 answers

684 views

AmbiguousMatchException When Rendering A Grid

I am setting GridViewDataControl.ItemsSource to an instance of a QueryableCollectionView. When the grid is rendered on the screen I get an AmbiguousMatchException. Any ideas what might cause this?

I have included the stack trace below:

System.Reflection.AmbiguousMatchException was unhandled by user code

HResult=-2147475171

Message=Ambiguous match found.

Source=mscorlib

StackTrace:

at System.RuntimeType.GetPropertyImpl(String name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)

at System.Type.GetProperty(String name)

at Telerik.Windows.Controls.GridViewBoundColumnBase.GetValidationErrors(Object dataItem, String propertyName) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Columns\GridViewBoundColumnBase.cs:line 1694

at Telerik.Windows.Controls.GridView.GridViewCell.<GetDataErrors>d__7.MoveNext() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 704

at Telerik.Windows.Data.EnumerableExtensions.Count(IEnumerable source) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Core\Data\Collections\EnumerableExtensions.cs:line 126

at Telerik.Windows.Controls.GridView.GridViewCell.UpdateIsValidState() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 624

at Telerik.Windows.Controls.GridView.GridViewCell.UpdateValue() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1708

at Telerik.Windows.Controls.GridView.GridViewCell.SetCellElement() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 537

at Telerik.Windows.Controls.GridView.GridViewRow.PrepareCell(GridViewCellBase cellBase, GridViewColumn column) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Rows\GridViewRow.cs:line 915

at Telerik.Windows.Controls.GridView.GridViewCellsPanel.PrepareCell(GridViewCellBase cell, GridViewColumn column) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 403

at Telerik.Windows.Controls.GridView.GridViewCellsPanel.GetVirtualizedCell(GridViewColumn column, Boolean createIfNull) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 365

at Telerik.Windows.Controls.GridView.GridViewCellsPanel.RealizeAndMeasureCells(Int32 startIndex, Int32 predictedLastIndex, Func`2 calculateNextIndex) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 300

at Telerik.Windows.Controls.GridView.GridViewCellsPanel.UpdateVirtualizedCells() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 235

at Telerik.Windows.Controls.GridView.GridViewCellsPanel.MeasureOverride(Size availableSize) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 290

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)