Questions on UI for WPF Forum

2 answers

173 views

Hi,

i want to get the coressponding GridViewRow when i did a DoubleClick insinde RadGridView.
Insinde my RadGridView's MouseDoubleClick event handler i have the following code

var s = e.OriginalSource as FrameworkElement;

var parentRow = s.ParentOfType<GridViewRow>();

if (parentRow != null)

{

MyDataItem item = (MyDataItem)parentRow.Item;

}

parentRow is always null.
I thought ParentOfType<T> walks up the visual tree until it finds a type of T regardless of how many
levels it has to walk up !?

Did i get something wrong ?
I am using WPF Q2 2012 controls.

Kind Regards
Kim

GridView

answered on 23 Aug 2012

5 answers

268 views

[Solved] Display a line for 0 value data

I am trying to build a real time data visualizer using telerik radchart. However, more often than not the first few minutes or so the data source does not have any data (thus the data points on the chart are 0s). I want the users to be able to see the 0 values as a line instead of just an empty graph with moving X axis. Any pointers on how I can achieve this?

Much appreciated.

Chart

answered on 23 Aug 2012

5 answers

216 views

PieChart 3D

Very recently i purchased telerik product, and needs to implement 3D pie chart in WPF, looking for a sample code.

Chart

answered on 23 Aug 2012

0 answers

113 views

RadGridView for WPF

Hello,

for my WPF application I need a DataGrid which realizes real Data Virtualization and not only UI Virtualization.

For the first time I've read your documentation. For Data Virtualization you are using VirtualQueryableCollectionView.

Look at: http://www.telerik.com/help/wpf/gridview-populating-datavirtualization.html

In my application the data comes from a MS SQL Server Database. What I need is to load only the data

from the database into the memory which are displayed in the DataGrid. If I'm scrolling in the DataGrid

the old data should be removed from the memory. If scrolling will be stopped only the data should be

in the memory which are displayed in the DataGrid.

Is that possible with your Data Virtualization ?

If I'm using your Data Virtualization does your built-in sorting, built-in filtering, built-in grouping

work without any limitations ? For example does your built-in filtering work on the whole data (for example a table

of my database) without loading all the data into the memory ?

Is it possible to edit data in the DataGrid or to add/remove a data row in the DataGrid if I'm using your Data Virtualization

Thank you for your answers.

Best regards,

Florian Schwarz

General Discussions

asked on 23 Aug 2012

3 answers

402 views

[Solved] Single 100% stacked bar

Hi,

I am having a requirement to make something like stacked bar. Visually it should do this:

- bar should have approx 20 pixels height
- it should be horizontal
- it should behave like with CombineMode="Stack100 - meaning that total of all items value is 100% - bar occupies always the whole width available.
- each "slice" on the bar should be of predefined colors
- there can be 5 types of slices (colors), but there can be many appearance of one type

Lets assume that We have next entity

public class ChartEntity

{

public EntityType Type {get;set;}

public string Value {get;set;}

}

and there is some data

List<ChartEntity> list = new ChartEntityList();

list.Add(new ChartEntity { Type = EntityType.TypeA, Value = 25 } );

list.Add(new ChartEntity { Type = EntityType.TypeB, Value = 35 } );

list.Add(new ChartEntity { Type = EntityType.TypeC, Value = 15 } );

list.Add(new ChartEntity { Type = EntityType.TypeA, Value = 9 } );

list.Add(new ChartEntity { Type = EntityType.TypeD, Value = 22 } );

list.Add(new ChartEntity { Type = EntityType.TypeE, Value = 37 } );

list.Add(new ChartEntity { Type = EntityType.TypeB, Value = 19 } );

list.Add(new ChartEntity { Type = EntityType.TypeC, Value = 5 } );

And lets define colors:

EntityType.TypeA = Yellow

EntityType.TypeB = Green

EntityType.TypeC = Blue

EntityType.TypeD = Red

EntityType.TypeE = Orange

Sine the total value is 25+35+15+9+22+37+19+5=167, the output should be something like this:

25/167 Yellow, 35/167 Green, 15/167 Blue, 9/167 Yellow, 22/167 Red, 37/167 Orange, 19/167 Green, 5/167 Blue



I dont need any legends, axes, or anything extra, all I need is horizontal bar. Is ChartView the way to go here. or there is a better control for this?



Regards,

Goran

ChartView

answered on 23 Aug 2012

0 answers

245 views

Working MVVM propertyGrid

Hi,

I´m working with the radpropertygrid control in a MVVM project, however my project has a viewModel that calls PropertyViewModel and also a View that contains the RadpropertyGrid(UserControl), and also a ShellView that contains moreViews including a TreeViewModel, how can I do to fire the propertygrid properties from a different View.

thanks in advance

PropertyGrid

asked on 22 Aug 2012

1 answer

75 views

Best way to automate testing a WPF application that's only partially WPF

I'm trying to build automated tests for an application that has only bits of it implemented in Silverlight. When I connect to the path of the application it sends this error: "It's not a valid Wpf Application!"

Does this mean that I can't record any of the test steps for this program?

General Discussions

answered on 22 Aug 2012

2 answers

450 views

How do I remove Row Indicator drop shadow effect?

I am using both the RadTreeListView and the RadGridView controls and I am very happy with their performance. However, there is a cosmetic effect I can't figure out how to remove.

I have RowIndicatorVisibility="Collapsed" and RowDetailsVisibilityMode="Collapsed" in these controls. Even with this portion of the control out of sight, there is still a drop shadow effect visible on the left edge of the grid's view. How do I get rid of this drop shadow?

Note: the attached screen shot illustrates the issue.

Thanks for your time.

TreeListView

answered on 22 Aug 2012

1 answer

539 views

Refresh Data / Sorting from ViewModel

Hi,

I'm using the WPF RadGridView in an MVVM architecture.

My grid is sorted using a SortDescriptor defined on an "Order" property in XAML. The user is able to change the order using different ContextMenu Buttons. When I change the Order Property of the items in my ItemsSource, the changes are visible in the grid, but the sorting is not updated. Which means, the items are sorted in a wrong order.

How do I refresh the ItemsSource in my ViewModel? I do not want to aquire a reference to my RadGridView and call the Rebind() method.

Greets

GridView

answered on 22 Aug 2012

5 answers

266 views

Zooming and scrolling bugs

Zooming and scrolling on the x-axis seems to have some issues:

The point on the far left stays in view. I would expect it to disappear
No line is drawn between the last point in view on the right, and the first point outside the viewable range on the right
When I zoom in between two data point, the graph is replaced with the text "No Data Series"
Scrolling sometimes doesn't result in an updated graph

The .avi file linked here shows me using the mouse to drag the scrollbar around and dragging the scrollbar handles to zoom in and out:
telerikchartzoomscrollbugs.avi

My xaml is simply:

<telerikChart:RadChart.DefaultView>
                  <telerikCharting:ChartDefaultView>
                     <telerikCharting:ChartDefaultView.ChartArea>
                        <telerikCharting:ChartArea>
                           <telerikCharting:ChartArea.ZoomScrollSettingsX>
                              <telerikCharting:ZoomScrollSettings ScrollMode="ScrollAndZoom"/>
                           </telerikCharting:ChartArea.ZoomScrollSettingsX>
                        </telerikCharting:ChartArea>
                     </telerikCharting:ChartDefaultView.ChartArea>
                  </telerikCharting:ChartDefaultView>
               </telerikChart:RadChart.DefaultView>

[edit]
forgot to mention the version I'm using: 2010.3.1314
[/edit]

Chart

answered on 22 Aug 2012