Questions on UI for WPF Forum

3 answers

105 views

Unable to achieve data virtualization with treelistview

Hi,

I am trying to use data virtualization with radtreelistview.

SummaryData

[] lstData = GetSummaryData();
VirtualQueryableCollectionView vqResults = new VirtualQueryableCollectionView(lstData) { LoadSize = 100, VirtualItemCount = 100000 };
radTreelistView.ItemsSource = vqResults ;

But i am getting a blank screen.

If I directly assign the source to radtreelistview, it loads correctly.
I need to implement data virtualization with radtreelistview. Are there any demerits of using data virtualization ?
Can you please provide an example project.

Thanks.

TreeListView

answered on 28 Feb 2013

4 answers

308 views

Section, Block and Paragraph styles

Hi,

I wonder if it is possible to extend the Section, Block and Paragraph objects, and wither they have any visual representation to them?

We are trying to create an editor using the RadRichTextbox, where the user should add one or more section (similar to the container concept in WPF) to the document, and then then add blocks within each section, and then they add text, images, inline controls...etc. to each block. After that, we want to enable the user to re-order those sections or the blocks within each section. So ideally, when a mouse over a section, the whole section border will be visible, to show the section boundaries. When the user right clicks, a context menu will show up to allow moving the section up/down. Same functionality should be there for blocks.

Can we use the section object “Telerik.Windows.Documents.Model.Section” to achieve this functionality? We are inspiring our specific purpose editor from this hierarchy

http://www.telerik.com/help/wpf/radrichtextbox-features-document-elements-hierarchy.html

and would like to reuse those object! Any advice?

Cheers

RichTextBox

answered on 28 Feb 2013

1 answer

190 views

Validation using Data Annotations

Hi
I am using data annotations to validate items in a collection presented in a RadGridView.
It successfully validates a property of an item in the collection e.g. a name is required

// ...

{

public class GroupOfItems

{

[Required(ErrorMessage="Name must be provided!")]

public string GroupName { get; set; }

// ...

I now want to ensure the name is unique within the collection. I have tried adding the [Key] attribute but no error is indicated if I enter another item with the same name. It may be that [Key] is not appropriate in this context.

What can you suggest I do to implement this validation rule?
Thanks
Craig
PS. I'm using C#, WPF, MVVM, Rad Controls for WPF 2012.3.1129.40

GridView

answered on 28 Feb 2013

1 answer

81 views

horizontal lines in day view not showing until vertical scroll bar is used

For some reason, vertical lines do not appear on our scheduleview until the vertical scroll bar is used. I've attached two images for reference.

Please Advise.

ScheduleView

answered on 28 Feb 2013

6 answers

393 views

Collapsed RadRibbonTab header takes up space

I have a radribbonview defined as this:

<telerik:RadRibbonView IsMouseWheelTabScrollingEnabled="False" ApplicationButtonVisibility="Collapsed" TitleBarVisibility="Collapsed" Background="HotPink">

<telerik:RadRibbonTab HeaderVisibility="Collapsed">

<telerik:RadRibbonGroup />

...

<telerik:RadRibbonGroup />

</telerik:RadRibbonTab>

<telerik:RadRibbonView />

I set the background to hotpink to illustrate my problem. There is only one radribbontab inside the radribbonview - so I really do not need any header for it.

In my program it looks like this (see attached file). The top row of tabs ("Project", "Contacts"... are not part of this problem, my problem is on a radribbonview inside the "Suppliers" tab).

I changed it resently from RadRibbonBar to RadRibbonView because it kept bugging me that RadRibbonBar is obsolete.

How do I make the large "margin" in top go away (the margin is not really a margin - it is where my RadRibbon tab would have had it's header if it had one). Anything else I need to collapse?

Thanks
Inger Marie

RibbonView and RibbonWindow

answered on 28 Feb 2013

0 answers

569 views

GridViewDataColumn's CellEditTemplate navigation issue

Hello telerik team. I have problem with CellEditTemplate navigation. I have GridViewDataColumn with RadMaskedNumericInput CellEditTemplate:

<telerik:GridViewDataColumn Name="RateColumn" DataMemberBinding="{Binding Rate,Mode=TwoWay}"

Header="{x:Static properties:Resources.CurrencyRateHeader}" DataFormatString="{} {0:#########0.00000000}">

<telerik:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<controls:RadMaskedNumericInput InputBehavior="Insert" Value="{Binding Rate, Mode=TwoWay}"

IsClearButtonVisible="False" Mask="##.########" FormatString="########00.00000000"

SpinMode="PositionAndValue"

UpdateValueEvent="PropertyChanged"

SelectionOnFocus="SelectAll"

KeyboardNavigation.TabNavigation="Local"

HorizontalAlignment="Stretch"

/>

</DataTemplate>

</telerik:GridViewDataColumn.CellEditTemplate>

</telerik:GridViewDataColumn>

The problem is in navigation: when i'm ending editing of this cell i cannot navigate to the next row's cell on hitting enter button. Navigation work's only with Tab button. How can i achieve desired result?

GridView

asked on 28 Feb 2013

5 answers

364 views

DataGrid, Select a row, right-click

Hello, the problem is such DataDrid to create a context menu, but it has a function of interaction with the selected row, so that when one line is highlighted, and we click the right mouse button on the 2, the context menu appears for the selection, that is, for one. Need to by pressing the right button on the DataGrid stood Item and its context menu. Tell me how to implement this.

DataFilter

answered on 28 Feb 2013

1 answer

67 views

multiple zooms in an chart with multiple y-axes

Hi Telerik,

is it possible to have multiple zooms in a chart with multiple y-axes? (for each Y axis it's own zoom)

Greetings Uwe

ChartView

answered on 28 Feb 2013

3 answers

63 views

Is it possible to put data in the group header row, that isn't a part of the group?

I'm trying to use the RadGridView control for a WPF app (.NET 4.5). We've got a WCF service which runs a SQL query that looks at 2 tables in 1 database, and a third table in a secod database. The WCF service returns all of the results. The results include things like client number, case number, client's first and last names, date of birth, etc. We want to group the results by the client number, and that's easily done, but what we also want to do is display things like the client's first and last name, DOB, etc in the group header. Clearly, however, we don't want to group by the client's name, or DOB, etc. Only by the client number (the case number does change from one record to the next and some other fields do too, but aren't relevant to this discussion).

My question is a simple one, is it possible to put into the group header data that isn't a part of the group, like client's first and last name, DOB, etc? If so, how is that done. But if not, then how do we get the data in a way that the RadGridView will display it the way we need it displayed?

GridView

answered on 28 Feb 2013

0 answers

98 views

Issue with Exporting to Word

Hi,
I'm trying to use the GridView export to *whatever format*, and they all seem to work fine, except the export to Text. I tried using your demo online, and that gave me the same problem. When I save it, it saves as a .doc (I also tried with .docx), and then the file is naturally saved to my drive as that format. However when I open it, it tries to open in a browser (in my case IE), and throws an error and won't open. First of all, have you seen this before, and secondly why would it try to open in a browser? Shouldn't it just be Word?

Thanks,
Ryan

GridView

asked on 27 Feb 2013