hello
I have 2 different Rad list boxes first one is called "LeftList" and the second one called "RightList" then i have a button when it clicked it moves the selected items from the list on the left to the list on the right  here is the code that i user to move items

    For Each item In Me.LeftList.SelectedItems
            Me.RightList.Items.Add(item)
        Next

however it is giving me errors


Here is a copy of the error

Exception has been thrown by the target of an invocation.


Action details
{"Exception has been thrown by the target of an invocation."}
System.Reflection.TargetInvocationException was unhandled
Message="Exception has been thrown by the target of an invocation."
Source="mscorlib"
StackTrace:
at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEnt ry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
at System.Threading.ExecutionContext.runTryCode(Object userData)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuarante edCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at Telerik.WinControls.RadControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms .UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int 32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase. OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase. DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase. Run(String[] commandLine)
at RetailManagementSystem.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.InvalidOperationException
Message="Element already added"
Source="Telerik.WinControls"
StackTrace:
at Telerik.WinControls.RadElementCollection.CheckElementAlreadyAdded(RadE lement element)
at Telerik.WinControls.RadElementCollection.OnInsert(Int32 index, Object value)
at System.Collections.CollectionBase.System.Collections.IList.Add(Object value)
at Telerik.WinControls.RadElementCollection.Add(RadElement value)
at Telerik.WinControls.UI.RadVirtualizedStackViewport.ResetVisualList(Poi nt scrollValue, Boolean isScrolling)
at Telerik.WinControls.UI.RadVirtualizedStackViewport.ResetValue(Point currentValue, Size viewportSize, Size extentSize)
at Telerik.WinControls.UI.RadScrollLayoutPanel.ResetScrollPos()
at Telerik.WinControls.UI.RadScrollLayoutPanel.ArrangeOverride(SizeF finalSize)
at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()
InnerException:


i tried so much but i really think there is a bug in the RadListBox controls


can i get some help with this issue please

thanks

Hello,

Hi,

I'm displaying several type of classes using the BindingList class as a DataSource. The GridView automatically generates columns of the names of the properties defined in these classes. In this case te text of the columns can be set with the DisplayName attribute. So far so good. My question now is, if there is a way to  change the order of the columns via property attributes and/or if it is possible the hide some properties from beeing displayed. 

Thanks in advance

Martin

Hi,

        I have custom appointment class and as well as custom editappointment dialog. I am able to reproduce Daily recurrence and weekly recurrence in the radscheduler. But when i try to create exceptions for the Appointment,  the radscheduler control displays daily recurrence even for the days which has been defined as exception.i am using SchedulerBindingDataSource. 

I am new user for Telerik , recently learning RadGridView tutorial --> Hierarchical Grid --> GridViewBinding to Hierarchical Data
I do as tutorial, when arrive at "Define Relation" I can't find "GridViewRelation Collection Editor" as shown in tutorial.

Pls,
Is there anyone can tell me where I can get "GridViewRelation Collection Editor"?

Thanks and Best Regards
Naunton

Hi All,

Currently the RadPanelbarGroupElement[s] are displayed in a way that they are visible as seperate buttons kind of thing where we see the lines/borders around them.

I have a requirement where I need the text of the RadPanelbarGroupElements to be displayed in such a way that they are blended with the background.

For ex
Consider this screen itself and assume it that its RadPanelBar.
Now the way I want to dispay the group elements is as follows:

RadGroupElement1

RadGroupElement2

RadGroupElement3



Instead, I dont want it to be displayed with demarcations like:

RadGroupElement1

---------------------

RadGroupElement2

----------------------

RadGroupElement3

In all the sample applications of RadPanelBar, we see the group elements easily distinguishable with some boundaries.
I need to show them boundary less.

I hope i am able to explain the problem.If its not clear please let me knw and i will provide the screen shot of how i want the radpanelbar to look like.

Looking forward for your help.

thanks
barkha

Hello,
I am showing a menu on click of  start button of the ribbon bar.
But along with menu options it also shows some unwanted space (in grey color) on the right hand side of the menus.
How to avoid this ?

Any help is greatly appreciated.

Regards,
Sid

I use RadGridView to edit some data and declare the GridViewMaskBoxColumn in the following way

            GridViewMaskBoxColumn widthColumn = new GridViewMaskBoxColumn();
            widthColumn.HeaderText = "Width";
            widthColumn.FieldName = "Width";
            widthColumn.MaskType = MaskType.Numeric;
            widthColumn.Mask = "f2";
            widthColumn.FormatInfo = CultureInfo.CurrentCulture;
            BaseGridView.MasterGridViewTemplate.Columns.Add(widthColumn);

As u can see I even set the culture manually and during debug I see that the culture is "ru-RU" that means I will see the numbers separated width "," instead of "."

That's works fine I see the comma clearly.
But then I set
            BaseGridView.CellValidating += new CellValidatingEventHandler(BaseGridView_CellValidating);
to validate if the user entered the data in a valid range for my application.
When debug reaches this action i can see CellValidatingEventArgs.Value defined as "11.11" instead of "11,11" as was shown in the editor.
This leads application to an exception when i try set this value to a float property.
What have i done wrong?

I need to create a winforms app with multiple 'panels' that have rounded corners with a shadow. This is what I'm talking about: DropShadow.

How would I go about doing this? I need to be able to put objects in the panel (.SWF file, .PDF file, HTML, ...)

I just started looking at the Telerik stuff today so I know almost nothing about it.

TIA - Jeff.

Hi,