Good afternoon,

I'm having an issue with RadComboBox binding. I'm implementing iNotifyPropertyChanged which works with both get and set properties.
When I change my selection in the RadComboBox the propertychanged event is raised and works fine.
However, I have IsEditable="True" & IsReadOnly="True" set


When I delete all of the text in the ComboBox using the keyboard "back space" key the property changed event isn't raised.
i.e. I would expect the selected index to be -1 again and the selected value to clear to some default.

Any idea how I can get around this?

This problem came to light because my DataErrorValidationRule isn't working properly if the selected ComboBox text has been fully deleted after a selection was made.

When viewing the Validation Error in a message box it reads 'Value " could not be converted.'

Here's my validation code for your reference:




Thank you for your time,

Rob

Q1 2012

I have a RadGridView that I am binding to a DataTable. The DataTable is dynamically generated in code. In the first column of the DataTable there is an object. I have an event attached to the RowLoaded event. In the RowLoaded event I want to set the template of the first cell to a Resource Template. This is the code I am using but the cell is always empty.

XAML Template

XAML GridView

Code

Thanks,

Billy Jacobs

I have a form with some fields.  One of the fields is an ordinary TextBox that is bound to a variable of type Decimal.

When I type letters into the field, it's highlighted in red, to indicate that it has failed validation, but the validation error is not added to the form's ValidationSummary, and ValidationSummary.HasErrors remains True.

Am I simply misunderstanding what ValidationSummary is supposed to do?

I'm getting an application crash when I drag a row from a RadGridView and drop it into an open doc in WordPad.  I don't get a crash when I drop it into an open doc in Notepad, Word 2003, or Excel 2003.  Drag and drop within the application seems to work fine.

Exception:

• {"Error HRESULT E_FAIL has been returned from a call to a COM component."}
• -2147467259

Here's the stack trace:

•    at MS.Win32.UnsafeNativeMethods.DoDragDrop(IDataObject dataObject, IOleDropSource dropSource, Int32 allowedEffects, Int32[] finalEffect)
•    at System.Windows.OleServicesContext.OleDoDragDrop(IDataObject dataObject, IOleDropSource dropSource, Int32 allowedEffects, Int32[] finalEffect)
•    at System.Windows.DragDrop.OleDoDragDrop(DependencyObject dragSource, DataObject dataObject, DragDropEffects allowedEffects)
•    at System.Windows.DragDrop.DoDragDrop(DependencyObject dragSource, Object data, DragDropEffects allowedEffects)
•    at Telerik.Windows.DragDrop.DragDropManager.DoDragDrop(DependencyObject dragSource, Object data, DragDropEffects allowedEffects, DragDropKeyStates initialKeyState, Object dragVisual, Point relativeStartPoint, Point dragVisualOffset) in c:\TB\117\WPF_Scrum\Release_WPF_40\Sources\Development\Core\Controls\DragDropManager\DragDropManager.cs:line 1012

We have an application that uses RadGridView.
We use RadGridView collection of objects that have attributes of validation.
There is also a button on the ToolBar that switches on edit mode of objects (editing is disabled by default).
The problem is that when you add a new object that does not pass validation and disable the editing mode, the application crashes with StackOverflowException.
If the button Edit Mode is not on the ToolBar everything works fine.

List the steps to repeat this behavior:
1) Press the Edit Mode (on the toolbar)
2) Add a new blank line (by pressing Ins)
3) Cancel the edit mode by clicking the Edit Mode (on the toolbar)
4) Click on any item on the main window
5) get the exception

If in p.3) you press the the EditMode button not on the toolbar everything will work fine without any exceptions.

UPD Sample project in archive 

Hello,

I'm  having a tough time getting a List box to Drag and Drop onto a RadDataForm

the RadListBox has a different type object bound to the collection than the RadDataForm , however both share a single common field

any examples would be greatly appreciated i have included a snapshot of the application along with the offending issue

Hi,

i use the "RadMaskedTextInput" and Text={Binding nn} to show a Adress. The Content should be "Österreich". But it shows me something like a "?" instat of the "Ö". How can i solve this?


Thanks
Regards
ww

Hi,

It appears that if you remove the Telerik.Windows.Controls.GridView.pdb from a project and then run the project in debug mode, an exception is thrown when you try to insert a row into an instance of the RadGridView control.

I'm just concerned about this because our application allows end users to create plug-in components, and some of them do this using Telerik controls, but they don't always provide the .pdb files. Since this is only happening in debug mode, it's probably not an issue, but I am curious why this is happening?

To reproduce:

Create a simple WPF application and add a RadGridView to the main window.

Create a simple data structure, example:



Bind the grid to an observable collection of that data structure:


Build the application in "Debug" mode, and then run it.

You should be able to insert rows into the RadGridView just fine.

Now, go into the output directory for the application and delete this file:

Telerik.Windows.Controls.GridView.pdb

Don't rebuild the application, just run it again, in debug mode.

If you try to insert a row into the grid, the system throws an exception and complains about a data binding object of some sort.

Any idea as to why this is happening? I thought .pdb files were only used in the event that an exception was thrown, so I'm a little unclear as to why RadGridView would crash *because* there is no .pdb file available...

Thanks.

Hi,

I have an issue where I have groupDescriptors defined on a Grid.
I added a GridViewExpressionColumn with a custom AggregateFunction using the code provided in this thread:
http://www.telerik.com/community/forums/wpf/gridview/aggregate-column-footers-don-t-sum-on-data-change-caliburn-micro-mvvm.aspx 

The AggregateFunction calculation works at the Grand Total level, but not at the GroupDescriptor level.

See screenshot attached. (2nd one)

Did somebody ever encountered the problem before?

Thank you,
Alan

Hello Telerik Team,

I have small doubt in wpf rating,
     How to bind rad rating? Bcoz i want to store the rated value in database.
our telerik version is 2010_2_0723_DEV.