Please forgive my lack of understanding on how the Persistence Framework functions.

I have an application where I allow users to set what columns on a Grid View are visible or hidden.  When they close the application, I want to save their preferences.  When they open the application, I want to reload their preferences from the last time they used the program. 

This seems like a good job for Persistence Framework.  I began by looking at this WPF online help example:http://www.telerik.com/help/wpf/persistence-framework-getting-started.html

The code that saves my Grid View layout as a stream seems to be working, however, I'm having trouble reloading the layout once the application has been closed and re-opened.  When I re-open the application my Stream object is nothing, so the PersistenceManager.Load method throws an error.  I don't understand how to retrieve my saved Grid View Layout.

Can you describe how Persistence Framework functions, and help me understand how I retrieve and apply my saved Grid View layout?

Any assistance is greatly appreciated.  Thank you.

Hello,
I have GridView with some columns with If I reduce width of GridView, unnecessary horizontal scrollbar appears. But when I click it, scrollbar disappears. There are no problems when all columns have How can I fix it ?

Hey guys,

I have RadRibbonDropDownButtons with drop down content inside a RadRibbonView.QuickAccessToolBar.  I also have functionality to dynamically change telerik themes.

When the application opens, I am able to click the RadRibbonDropDownButtons and see the drop down content perfectly fine, but when I change themes the drop down content does not open. All other telerik components work fine.

Below is the code to dynamically change themes. Any ideas on what would cause the button's not to display their drop down content?

Specifications:

Telerik libraries - RadControls for WPF Q2 3013 SP1
My Project: WPF desktop application in.Net 4.0 C#.

The problem:

I'm adding rows to the RagGridView through an ItemsSource binding to an observable collection.  Whenever an item is added to the collection, the RagGridView control reloads all previously added rows along with the new row.  It also re-instantiates user controls from the exsting rows.  For example, If I have 20 rows, and one gets added from the collection, the entire 20 rows are reloaded before the new one gets loaded. This makes the GUI get slower and slower as rows are added.

What's worse: When items are added that will be displayed out of the scrolling view, the RagGridView reloads all the old rows and then it eventually (after about 15 items are added that are not visible) goes into an infinite loop reloading all the rows that are not visible.  This locks up the GUI and fills up system memory since it re-instantiates user controls.  This infinite loop happens in my situation after about 45 to 50 rows total are in the grid control.

Here's the XAML definition of the control:


Here is the stack trace from my RowLoaded callback method while the RadGridControl is caught in the infinite loop:



And here's the stack trace when the control is instantiating my CircularProgressBar user control in the infinite loop:



I have tried turning data virturalization on and off with no change the results.  I have used the RadGridConrol with much success in the past, but I'm stumped here.  I hope I'm just missing something stupid.

Any suggestions?  Thanks.

I have a hyperlink in a cell of a GridView, I'm trying to use Automated UI Test to record the action of clicking on the hyperlink, the automation works well with the DataGrid that comes with Visual Studio but when I tried using Telerik's GridView, it fails. The error message I get, is along the lines, that it cannot detect the hyperlink. Could anyone please guide me on how to resolve this problem?

Hello, a few questions about this feature:

1) Is it possible to show a tooltip on annotations?
2) Is it possible to have a click event (mousedown / mouseup should be fine too) on annotations to do something in response of a click?
3) Is it possible to update the way an annotation looks based on the mouse being over the annotation? I tried with style triggers but it didn't work.

Thanks!

Hi
I have a draggable treeview and I would like to write on dragvisual content something like "Drop inside <Node Information>".
How can I get the Node information?

I tried something like this but "options" is always null



Thanks

I'm trying to show a tooltip in the needle in order to show the selected value.

I have this code in the xaml file:


And I wanted to add the tooltip format in the code behind file:


But when I run the program, it only shows a blank square, as you can see in the image that I have attached.
I think that I am missing something.

I saw this Page and i tried this code:


But it doesn't work either.

Regards,

Alberto Martinez

Hello,

I want to make a radgridview which columns and rows depends of the selected items in two combo boxes. Right now I'm doing that by creating a data table each time the selection changes and assigning it to the radgridview itemsource... It's woks fine with few elements but if one of the selection (for example, cities) has a lot of columns the grid stops working.... Is there a better way to implement this?

I've attached you an image of what I have for better understanding
Thanks!