Hi,

  <>How we can apply Binding.ValidationRules in the telerik:RadNumericUpDown control  ?

Hi,

I have found a serious bug in the new release. I have attached the example project as well. 

Run the project using the set of DLLs which are there in the bin/debug folder. 

There are Three columns in the GridView. Second column is set to invisible (isVisible = false). But when you run the project you can see second column is visible. Although the Header is empty. you can't resize the column. it just sit there.

One thing I figured it out that if I don;t set the width property of other columns it looks fine. But as you play with the Width or MinWidth property of column it will display the hidden column.

It was not happening before. These Telerik dll we got from the RadControls_for_WPF35_2011_1_0315_Dev.msi Setup.

The same issue is happening in silverlight as well. Let me know if you have any trouble in reproducing it.

I don't find any way to attach the sample project. so just pasting the code here. Name the project as "HiddenColumns". There are two files MainWindow.xaml and MainWindow.xaml.cs

Regards
Sanket Singhvi

I'm trying to implement custom filtering. I need to be the one who applies the new filter options to the underlying IEnumerable/IQueryable, as I have to apply certain column filters specially for the data source.

I can't figure out how I can be made responsible for returning the IQueryable that the RadGridView ultimately uses. i'd sort of expect an event like Filtering to have a return object on the EventArgs, for me to pass the IEnumerable back to it.

I'm also completely at a loss as to how to integrate this into the DataPager. Once again, I need to be responsible for implementing the page count retrieval.

Update: I think I can do it by implementing a custom QueryProvider and IQueryable, and parsing what Telerik applies to it into my own form. This sounds hard, though. =/

It's complicated by the fact that my data model doesn't actually have real members for the things I want to query by. I sort of would rather pass them around as text keys.

For example. I'm showing a list of Person objects. Person objects have a collection of Name objects. Only one of which is the "active name." I want the First Name column's filter to be handled by formulating some custom SQL that joins to Name, eliminates all by the current one, and filters that one's FirstName property. I can easily write this code, but I can't figure out how to grab the FilterDescriptor of the FirstName column and actually apply it to the result set the RadGridView AND pager use.

I need to refresh schedule view on button click or any event. when i bind data with it first time it works perfectly second time when i changed the data and rebind it, its not refresh the scheduleview

Hi,

I am using a stack panel with a TextBlock & ItemsControl.

How do I export the data to Excel.

Any quick sample will be highly appreciated.

Thanks & Regards,
Hirak

Hi,

we are using GridView.ToHtml method for Export grid's records.

Depending on records count, we get a System.OutOfMemoryException in this method. (>10000 records throw  exception)

We are using 'RadControls for WPF Q2 2009' version.

Are there anyway to improve performance or to avoid this exception?

Best regards!

Hi there, I am trying to create a behavior I can use to set the width of certain columns to 0 if certain things happen but when I try to access the AssociatedObject it is always null. I think the code will better explain this...


It's fairly obvious what I want to do there however no matter what the AssociatedObject is null, Here is the XAML I am using - hopefully someone can point me in the right direction on this.


Thanks alot!!!

Hello,

I'm trying to add an item to the top of my treeview with a value of "Select/Deselect All" that will check all items. I have a treeview named "tvDirectory" 

I added it like this:
 

Then I tried to implement the functionality in the Checked eventhandler like this:

But I get an "object reference not set to instance of an object for  "item". Help please, thanks.

Hi there,

I followed the ScheduleView / Drag And Drop Example but found two issues that I need assistance with.

(i) When an item is dragged from the ScheduleView back to the listbox, and the payload is directly dragged on top of a ListItem, when the drop operation completes the item disappears.
(ii) When an item is dragged to the very bottom of the listbox originating from the ScheduleView or the ListBox, when the drop operation completes the item disappears.

What changes to the OnDropQuery and OnDropInfo are required to get this to work. I'd like for an item to be able to be dragged back from the ScheduleView to the ListBox without disappearing.

I tried.to combine the Drag within a ListBox Example with the ScheduleView Drag Drop Example with no success.