Hi All,

I am using Radcombobox for my application and I am facing the following problem i.e., when the user inputs data in the combobox it should only allow type those values/data which are present in the combobox items and it should restrict the user in inputting the text/data which doesn't match with the dropdown list values .

Example: Take suppose i have already 4 values in the dropdownlist namely 1)Sanfrancisco 2)Newyork 3)London 4) Australia
 When the user types 'New' the system allow the user to input and also should suggest what are the values/records starting with New but needs to restrict the user when he enters something like 'Flo' (i.e., the item which doesn't matches with the dropdownlist values).

Can anyone suggest how to acheive this. Also it would be great if you can provide me code snippet
Currently I am using Q3 2009 SP1 version.

Regards,
Prasad.

Hello,

I have a L = List<A>  of classes A { int X, int Y, int Z,  DateTime Timestamp }

And want to set chart.DataSource = L and 3 line series should be drawn with the Timestamp property on the x-Axis and respectively the values of X,Y and Z on the y-Axis.

How can I do this ? Is set the DataXColumn values in the series...  but no reaction ...

could you give a small example ?

Hi,

I have two columns in my grid for which i add image in CellFormatting event. But when i re-bind my grid, those images come up in all columns.I am not able to trace the issue. I have tried adding GridviewImageColumn as well, but with that also i am facing the same problem. I have attached the screen shot.
My Code:

 DataTable dtTemp = new DataTable();
            for (int i = 0; i < dsTemp.Tables.Count; i++)
            {
                dtTemp.Merge(dsTemp.Tables[i]);
            }
            SetSummaryInFooterForCoaching(dtTemp);            
            CoachingGrd.DataSource = dtTemp.DefaultView;
            //if (CoachingGrd.Columns.Contains("Settings") || CoachingGrd.Columns.Contains("Agents Connected"))
            //{
            //    CoachingGrd.Columns.Remove(CoachingGrd.Columns["Settings"]);
            //    CoachingGrd.Columns.Remove(CoachingGrd.Columns["Agents Connected"]);
            //}
            //AddImageColumn(CoachingGrd.Columns.Count);
            
            (this.CoachingGrd.GridElement as GridTableElement).TableHeaderHeight = 35;
            CoachingGrd.MasterTemplate.AllowEditRow = true;
            CoachingGrd.MasterTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
            CoachingGrd.AllowColumnReorder = false;
            CoachingGrd.ThemeName = "ControlDefault";
            foreach (GridViewDataColumn column in CoachingGrd.Columns)
            {
                HideCoachingColumns(column);
                column.ReadOnly = true;
                if (column.FieldName == SalesCenterSettingsColumns.Range)
                    column.ReadOnly = false;           
                column.WrapText = true;
                column.TextAlignment = ContentAlignment.MiddleCenter;
            }

private void CoachingGrd_CellFormatting(object sender, CellFormattingEventArgs e)
        {
            GridViewDataColumn column = e.CellElement.ColumnInfo as GridViewDataColumn;

            if (column != null && column.FieldName == "Agents Connected")
            {
                e.CellElement.TextAlignment = ContentAlignment.MiddleLeft;
                e.CellElement.Image = global::PoseidonClient.Properties.Resources.People;
                e.CellElement.ImageAlignment = ContentAlignment.MiddleRight;
            }
            if (column != null && column.FieldName == "Settings")
            {
                e.CellElement.Image = global::PoseidonClient.Properties.Resources.Settings;
            }
        }

Thanks,
Pinaki

hi all

i want to display image in rad gridview ,image name is save in database and image is save in application folder

how can i show in vb.net window application.

If there a way to change the first day of the week for the datetimepicker in winforms

Issue 1:
I get an error on a heirarchical gridview:

An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll
Additional information: Exception has been thrown by the target of an invocation.

I have not been able to properly establish what causes this error, but I can see that it comes when I click on the child rows. The error is somewhat sporadic but it is always after expanding and clicking on childrows. The childrows in my grid are readonly.

Issue 2:
When I double click on childrows, the grid sometimes automatically scrows to the bottom (i.e. to the last row in the gridview mastertable) and I cannot explain this behaviour.

Issue 3:
I have observed yet another error.. see below (couldnt attach it as a *.txt):
=========================================================================================
System.Transactions Critical: 0 : <TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Critical"><TraceIdentifier>http://msdn.microsoft.com/TraceCodes/System/ActivityTracing/2004/07/Reliability/Exception/Unhandled</TraceIdentifier><Description>Unhandled exception</Description><AppDomain>Docwize.Client.vshost.exe</AppDomain><Exception><ExceptionType>System.Reflection.TargetInvocationException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType><Message>Exception has been thrown by the target of an invocation.</Message><StackTrace>   at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct&amp;amp; sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature 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(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   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&amp;amp; m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message&amp;amp; m)
   at Telerik.WinControls.RadControl.WndProc(Message&amp;amp; m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message&amp;amp; m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message&amp;amp; m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&amp;amp; 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(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(ApplicationContext context)
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
   at DocwizeClient.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
   at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()</StackTrace><ExceptionString>System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---&amp;gt; System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---&amp;gt; System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.WinControls.UI.RadGridViewElement.get_CurrentColumn()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridDataCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfo()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.Initialize(GridViewColumn column, GridRowElement row)
   at Telerik.WinControls.UI.GridDateTimeCellElement..ctor(GridViewColumn column, GridRowElement row)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle._InvokeConstructor(Object[] args, SignatureStruct&amp;amp; signature, IntPtr declaringType)
   at System.RuntimeMethodHandle.InvokeConstructor(Object[] args, SignatureStruct signature, RuntimeTypeHandle declaringType)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at Telerik.WinControls.UI.GridRowElement.CreateCell(GridViewColumn column)
   at Telerik.WinControls.UI.GridDataRowElement.CreateCell(GridViewColumn column)
   at Telerik.WinControls.UI.CellElementProvider.CreateElement(GridViewColumn data, Object context)
   at Telerik.WinControls.UI.CellElementProvider.GetElement(GridViewColumn data, Object context)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.UpdateElement(Int32 position, T data)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeElement(RadElement element, RectangleF clientRect, RectangleF finalRect)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeHorizontally(SizeF finalSize)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.GridVisualElement.ArrangeElement(RadElement element, SizeF finalSize, RectangleF clientRect)
   at Telerik.WinControls.UI.GridVisualElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.ScrollableRowsContainerElement.ArrangeElement(IVirtualizedElement`1 element, Int32 position)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOnScrollUp()
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.ScrollableRowsContainerElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()
   at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayoutCallback(ILayoutManager manager)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct&amp;amp; sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature 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(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   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&amp;amp; m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message&amp;amp; m)
   at Telerik.WinControls.RadControl.WndProc(Message&amp;amp; m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message&amp;amp; m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message&amp;amp; m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&amp;amp; 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(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(ApplicationContext context)
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
   at DocwizeClient.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
   at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()</ExceptionString><InnerException><ExceptionType>System.Reflection.TargetInvocationException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType><Message>Exception has been thrown by the target of an invocation.</Message><StackTrace>   at System.RuntimeMethodHandle._InvokeConstructor(Object[] args, SignatureStruct&amp;amp; signature, IntPtr declaringType)
   at System.RuntimeMethodHandle.InvokeConstructor(Object[] args, SignatureStruct signature, RuntimeTypeHandle declaringType)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at Telerik.WinControls.UI.GridRowElement.CreateCell(GridViewColumn column)
   at Telerik.WinControls.UI.GridDataRowElement.CreateCell(GridViewColumn column)
   at Telerik.WinControls.UI.CellElementProvider.CreateElement(GridViewColumn data, Object context)
   at Telerik.WinControls.UI.CellElementProvider.GetElement(GridViewColumn data, Object context)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.UpdateElement(Int32 position, T data)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeElement(RadElement element, RectangleF clientRect, RectangleF finalRect)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeHorizontally(SizeF finalSize)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.GridVisualElement.ArrangeElement(RadElement element, SizeF finalSize, RectangleF clientRect)
   at Telerik.WinControls.UI.GridVisualElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.ScrollableRowsContainerElement.ArrangeElement(IVirtualizedElement`1 element, Int32 position)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOnScrollUp()
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.ScrollableRowsContainerElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()
   at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayoutCallback(ILayoutManager manager)</StackTrace><ExceptionString>System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---&amp;gt; System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.WinControls.UI.RadGridViewElement.get_CurrentColumn()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridDataCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfo()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.Initialize(GridViewColumn column, GridRowElement row)
   at Telerik.WinControls.UI.GridDateTimeCellElement..ctor(GridViewColumn column, GridRowElement row)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle._InvokeConstructor(Object[] args, SignatureStruct&amp;amp; signature, IntPtr declaringType)
   at System.RuntimeMethodHandle.InvokeConstructor(Object[] args, SignatureStruct signature, RuntimeTypeHandle declaringType)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at Telerik.WinControls.UI.GridRowElement.CreateCell(GridViewColumn column)
   at Telerik.WinControls.UI.GridDataRowElement.CreateCell(GridViewColumn column)
   at Telerik.WinControls.UI.CellElementProvider.CreateElement(GridViewColumn data, Object context)
   at Telerik.WinControls.UI.CellElementProvider.GetElement(GridViewColumn data, Object context)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.UpdateElement(Int32 position, T data)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeElement(RadElement element, RectangleF clientRect, RectangleF finalRect)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeHorizontally(SizeF finalSize)
   at Telerik.WinControls.UI.StackLayoutElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.GridVisualElement.ArrangeElement(RadElement element, SizeF finalSize, RectangleF clientRect)
   at Telerik.WinControls.UI.GridVisualElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.UI.ScrollableRowsContainerElement.ArrangeElement(IVirtualizedElement`1 element, Int32 position)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOnScrollUp()
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeElements(SizeF finalSize)
   at Telerik.WinControls.UI.BaseVirtualizedContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.VirtualizedStackContainer`1.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.UI.ScrollableRowsContainerElement.ArrangeOverride(SizeF finalSize)
   at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
   at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
   at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()
   at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayoutCallback(ILayoutManager manager)</ExceptionString><InnerException><ExceptionType>System.NullReferenceException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</ExceptionType><Message>Object reference not set to an instance of an object.</Message><StackTrace>   at Telerik.WinControls.UI.RadGridViewElement.get_CurrentColumn()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridDataCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfo()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.Initialize(GridViewColumn column, GridRowElement row)
   at Telerik.WinControls.UI.GridDateTimeCellElement..ctor(GridViewColumn column, GridRowElement row)</StackTrace><ExceptionString>System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.WinControls.UI.RadGridViewElement.get_CurrentColumn()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridDataCellElement.UpdateInfoCore()
   at Telerik.WinControls.UI.GridCellElement.UpdateInfo()
   at Telerik.WinControls.UI.GridVirtualizedCellElement.Initialize(GridViewColumn column, GridRowElement row)
   at Telerik.WinControls.UI.GridDateTimeCellElement..ctor(GridViewColumn column, GridRowElement row)</ExceptionString></InnerException></InnerException></Exception></TraceRecord>

I have an application that used another vendors ribbon control. We were very unhappy with it, so just replaced it with your RibbonBar control. We understood that to get the benefits from the ribbon control, that we should use the RadRibbonForm. Since we already had all of the code written for this form, we just changed the inherits statement from Forms.Form to RadRibbonForm.

Now when we run the application, we cannot use the title bar. We cannot move the window. We cannot min/max the window. And we cannot access the close or control icons.

Is there another step we need to do to get the RadRibbonForm title bar to work correctly?

Thanks!

I have a hierarchical grid, but I need to allow users only to be able to select rows in the top level (not sub-levels).
I tried to detect when the selection is in the sub-level and deselect that row and select corresponding parent row, but it didn't work out.

Is it possible in general to disallow row selection in a grid?

I am using Q1 2010 SP1.
Suggestions? Thanks.

Hello,

How can i open the EditAppointmentDialog programmatically? It is because i wanna update the database after the user clicks btnOK. Is this possible to get back dialog result?

Thanks,
Angus

Hello

Is there a simple way to prepopulate the subject field of a new appointment box?

Thanks,
TS