I'm wondering if anybody has done any work extending DataFilter to handle dealing with child collections in a complicated manner. For instance, I have an IParent interface, which has an IEnumerable<IChild> Children member. I'd like to be able to express visually:

from p in parents where p.Children.Any(i => i.Type == 1 && i.Foo = "Bar")

Basically, I want to select parents based on whether any children exists.

I have this notion that I could implement this entirely on my own... somehow. Perhaps a custom 3-part editor control for teh Children property, with a "any" operator... and a sub-RadDataFilter rendered in part-3.

That seems pretty kludgy though.

Hi Support
I was able to bind combo according to this thread http://www.telerik.com/help/silverlight/raddatafilter-how-to-create-custom-filter-editors.html
but i don't know how to bind it to special value and Description, is there any idea?
<DataTemplate x:Key="ComboKind">

<telerik:RadComboBox DisplayMemberPath="Dsc"

                     SelectedValue="{Binding Value, Mode=TwoWay, FallbackValue=null}"/>

 

</DataTemplate>

P.S. Item Source contain ID and Dsc

Thanks in advance 
Mehri

Hi,

I have an issue about the scroll on my gridview.
My gridview contains a lot of data so there is vertical scrollbars and I set the insert row to visible.
The problem is when I enter data on the insert row and I press enter the gridview don't scroll to the the added row.
Here is my gridview:

I tried to use the event RowEditEnded in the code behind to scroll to the position of  the row like this but it didn't work:

Do you any solution about this issue?
Thanks

Hello all, 

we are having a big problem with radchart performance. I'll explain  an example to illustrate the situation. 

In one part of our app, a user control that contains 5 Radcharts is loaded. Each chart contains two series for a total of 10, and each series has exactly 2880 points in our database. Internally, each chart is set to use a sampling threshold of 200, X axis range is set to DateTime and AutoRange, and zoom settings are set to zoom and scroll. As these are multi-series charts, the schema we used is that found in Telerik's documentation (binding to nested collections), associating each series mapping to one collection index. 

As the user refreshes, one WCF call is asynchronously made to retrieve each series data (thus, 10 calls in total). The call returns really fast, and in around 2 seconds all the lists of points that feed the series are loaded in memory.

The problem arises when updating the charts's ItemsSource property. It takes a lot of time since the ItemsSource of each chart is updated until all the charts are shown in the screen properly (around 15-20 seconds!!). This is totally a mess for us, as our customer needs to change the date queries dinamycally and perform refresh operations frequently. Waiting for 20-25 seconds every time a refresh is made is not acceptable for him. 

Showing point marks, labels and so on is disabled, as well as animations. Please, could you provide any help for this?

I post the chart configuration code here:


And here, the function used to process the result of the asynchronous WCF call. As you can see, we make a local copy of the list returned by the WCF method inserting it in an ObservableCollection and then setting the ObservableCollection as an item of m_lstChartSource, which is a list and the object set as Chart.ItemsSource target. "ProcessChartSerie" makes additional processing regarding the serie (color, item mappings and so on):

The follow code doesn't work:

I tried setting OpenDropDownOnFocus="True", and it works only for the first time. When the ComboBox is still on focus but the dropdown is close, I tried typing in the textbox the dropdown will not open.

within wpf radChart, export to xlsx, is it possible to dump out a table of the raw data that is used in the chart?  Do i need to do this "by hand" via another process?
thanks,
robert

Hi,

In the Self referencing radgridview, I need to implement the below items

1. Multiple row headers (dynamically)
2. Binding the List Collection to the grid

For example, the grid should look like
------------------------------------------------------------------------------------------------------------------
                                 MICROSOFT             |                           TELERIK
------------------------------------------------------------------------------------------------------------------
Topic         |       .NET    |    Sharepoint       |     RadGridView    |    RadContextMenu
------------------------------------------------------------------------------------------------------------------
- T1           |         xyz     |      abc                 |            34            |           25
    - T11     |                   |                            |                            |            zzz
 -------------------------------------------------------------------------------------------------------------------

I have the LINQ query list as below

CompanyID | Company Name | ProductID | Product Name        | Topic ID | Topic Name|  Parent Topic ID | Value ID | Value
        1         |  Microsoft           |  1              |   .NET                    | 1            |  T1              |       NULL           |     1         | xyz
        1         |  Microsoft           |  2              |   Sharepoint           | 1            |  T1              |       NULL           |     2          | abc
        2         |  Telerik              |  3              |   RadGridView        | 1            |  T1              |       NULL           |     13        | 34
        2         |  Telerik              |  4              |   RadContextMenu | 1            |  T1              |       NULL           |     15        | 25
        2         |  Telerik              |  4              |   RadContextMenu | 2            |  T11            |       1                  |     19        | zzz

and I am having this query result in List<myClass>. myClass is having fields and properties for the above mentioned table.
Please help me to achieve this with some sample code.

Trouble Filtering Rows.
I have the need to bind a viewmodel that has a hierarchy of objects in the template for the TreeListView. I have a need to make rows(nodes) toggle between visible or invisible while in "ShowAll" mode where all the nodes can be seen. The user clicks the show all checkbox outside of the treeview to enter show all mode. There is an eye icon beside every treelistivew item kind of like adobe products have. The eye once clicked will turn from gray to a selected state to show that he item is visible. Once the ShowAll mode is turned off the items should be filtered from view. I can't work this out.



The converter can work on my IsVisible variable internally for each of my children but there is no way to check the show all control from the TreeListViewTableDefinitino.ItemsSource as it passes through the converter(I could flag the converter to show everything). I tried to use a Multibinding which doesn' t work. I also tried to pass the Element in the ConverterParameter but that doesn't work either. I toyed with polluting my viewmodel with a static ShowAll property and manually walking the hierarchy and updating the IsVisible properties using that property flag but I am having troubles with that too.

 So, naturually my question is, how do I properly filter the rows? 

In WPF telerik gridview control if you have a gridViewComboBoxColumn, during runtime I am seeing a problem:

1. Select the 'Click here to add new item' button to add a new row to the grid
2. click the comboxBox item (the DDLB) and select something from the drop down.
3. hit the 'tab' button on keyboard.
4. click the add new item button again.
5. click the combox item to open the drop down
*** at this point the combobox does not open or become selected, instead the row just adds without allowing any modification***

I am getting the same problem with your sample project as well as my project.
(sample I found at the link below)
http://www.telerik.com/community/forums/wpf/gridview/use-combobox-while-inserting-data.aspx

Has anybody else seen this issue and hopefully have a workaround?

Thanks again - Chris

Hi,
My Treeview's ItemsOptionListType is set to CheckList and binded it with data. 
My requirement is:-
For some of treeviewitem's checkbox need to be Read only.
I am able to set IsEnable to 'false' in ItemContainerStyle then total item appearance is is disabled mode.
But i want to set IsReadOnly to True which is not available as i want to see same look for all treeview items.

Any Suggestions?