We are having performance issue on TreeListView. At most we have to load around 80K rows. We would like to know what is the performance benchmark on your testing. Its taking way long to load this much of data. 

We would have around 10 columns in the TreeList View. 

Could you please send us a sample project that shows around 100k rows so that we would know if there is something we are doing on our side that's causing the delay?

We are using latest 2012 sp1 version of Telerik. 

I'm building a reusable user control that will contain a search query textbox and a GridView that contains the results of the query.  I have created a DependencyProperty on the user control that will hold the collection of items to be searched.  Since the type of objects we will be searching and displaying on the screen varies, I also need to have the user control support custom column definitions for the GridView.  I tried creating a DependencyProperty for the columns definition, but it looks like the GridView didn't support binding the columns property to it.

As it stands right now, the columns are defined from within the user control's XAML.  It is fully functional.  However, this breaks reusability if we want to work with a collection of a different type of object, and we don't want to auto-generate columns.  Any ideas on how we can move the GridView column definitions outside of the user control but still have them written in XAML?  I've done some searching for a solution but haven't found anything ideal yet.

Thanks.

I'm relatively new user of Telerik controls.

I have a grid with a group column, and the grouped column is not visible. Clicking on group record throws an exception. It is not consistent, but I do get this error every now and then. I would appreciate if anyone could point me in the right direction.

Version: 2012.1.326.40
Call Stack:

  Telerik.Windows.Data.dll!Telerik.Windows.Data.ObjectDataBinder.GetValue(object bindingSource = null, string propertyPath = "Manager") Line 26 + 0x3 bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridViewBoundColumnBase.GetCellContent(object item = null) Line 1213 + 0x1d bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridViewBoundColumnBase.CreateCellElement(Telerik.Windows.Controls.GridView.GridViewCell cell = {Telerik.Windows.Controls.GridView.GridViewCell}, object dataItem = null) Line 179 + 0x11 bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewCell.CreateCellElement(Telerik.Windows.Controls.GridViewColumn column = {Telerik.Windows.Controls.GridViewDataColumn}, object dataItem = null) Line 549 + 0x1a bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewCell.SetCellElement() Line 522 C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewRow.PrepareCell(Telerik.Windows.Controls.GridView.GridViewCellBase cellBase = {Telerik.Windows.Controls.GridView.GridViewCell}, Telerik.Windows.Controls.GridViewColumn column = {Telerik.Windows.Controls.GridViewDataColumn}) Line 961 C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewCellsPanel.PrepareCell(Telerik.Windows.Controls.GridView.GridViewCellBase cell = {Telerik.Windows.Controls.GridView.GridViewCell}, Telerik.Windows.Controls.GridViewColumn column = {Telerik.Windows.Controls.GridViewDataColumn}) Line 410 C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewCellsPanel.GetVirtualizedCell(Telerik.Windows.Controls.GridViewColumn column = {Telerik.Windows.Controls.GridViewDataColumn}, bool createIfNull = true) Line 367 + 0xf bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewCellsPanel.RealizeAndMeasureCells(int startIndex = 0, int predictedLastIndex = 7, System.Func<int,int> calculateNextIndex = {Method = {System.Reflection.RuntimeMethodInfo}}) Line 334 + 0xe bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewCellsPanel.UpdateVirtualizedCells() Line 269 C#
> Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewCellsPanel.MeasureOverride(System.Windows.Size availableSize = {System.Windows.Size}) Line 306 C#

Hi, i have a question - how can i create rounded corners for rad grid view.
I tried to use opacity mask, but not with great success - i was wondering if i need to edit new template or i can use opacity mask.

Thank you.

I have a RadRibbonView with his "IsMinimized" property set to "True". In my RadRibbonView, I have a "Search" RadRibbonTab with many fields and a search button. If my users click on the RadRibbonTab, the RadRibbonTab expand and the user can enter values the fields and click on the search button to start searching informations.

I'm trying to implement a CTRL+F gesture (search shortcut) and I would like to know how I can force the RadRibbonTab to be visible by code to simulate a user click on the RadRibbonTab.

Thank's

We like RadRibbonTab auto adjust the width of the header (Width="Auto"), but comparing RadRibbonTab with Excel, the header in Excel is about 25% wider then RadRibbonTab.  Could you please show me how to make the tab header more wider.
The tab header in our application is created by user, so auto adjustable is necessary.  
BTW: We are using RadControl 4.0.30319 
Thanks,
Chris

Have a touch screen app with a RadCarouselpanels populating a listbox.
(there are 3 usercontrols) . I only need to lock the scrolling on one of the usercontols.
So the user are able to use the touch features.

any thoughts?

Hi,
I'm starting to use your RadCarousel control and I have got a problem.

I want to replace the horizontal buttons with a customized button with a picture.

How could I do this?

Thank you for your help. 

Bea

Hi,
    I have the following recurrence pattern string DTSTART:20120502T113000ZDTEND:20120502T123000ZRRULE:FREQ=MONTHLY;INTERVAL=16;BYMONTHDAY=2
I use this code to apply it to an appointment
When checking for occurennces it seems to occur every 12 months on day 2 and not every 16 months. In fact any month number over 12 seems always fall back to 12.

Is this a bug or have I got my logic wrong?
Thanks

I have a grid view that has about 450 items in it, with 8 columns on each item. There are 10 top-level nodes.

Expanding or collapsing at any level takes quite a while - click on the arrow, wait almost a second, then the change shows up in the grid. The speed doesn't seem to change depending on whether the tree is fully expanded or fully closed. The treelist is bound directly to a collection.

I did a quick profile, and it looks like it's spending most of it's time in:

Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureChild(class System.Windows.UIElement,valuetype System.Windows.Size,int32)

Any thoughts...