Questions on UI for WinForms Forum

3 answers

212 views

The combo boxes are attached to the stored procedures which get the data from the database. But they still do not seem to get initialized. In WinForms I guess we have to force the loading or initialization, what is the code for this. Thanks in advance.

DropDownList

answered on 03 Sep 2012

3 answers

407 views

Cannot resize button from the theme

Hi,

I was trying to resize the radbutton to be larger in visual style builder so that when I swith theme both text and button can be bigger. I was managed to set the text with a bigger font size but couldn't find a way to make radbutton bigger. When my winform app runs the text on the button is truncated since it's set bigger. I tried minsize on rootradelement, radbuttonelement and elements further down, still doesn't work. Please advise.

Thank you,
Dannie

Buttons, RadioButton, CheckBox, etc

answered on 03 Sep 2012

3 answers

321 views

gridview combobox filter on combo box columns

Hi,

I have a column that is connected to an enum, and another column that is connected to a list of objects.

when i try to select an object/enum member on the filter, the system crashes.

in the enum case with the following reason:

System.InvalidCastException was unhandled

Message="Invalid cast from 'System.String' to 'Sivan3.Dao.Poco.Student+StudentStatus'."

Source="mscorlib"

StackTrace:

at System.Convert.DefaultToType(IConvertible value, Type targetType, IFormatProvider provider)

at System.String.System.IConvertible.ToType(Type type, IFormatProvider provider)

at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)

at Telerik.WinControls.UI.GridFilterCellElement.SetFilterValue(Object value)

at Telerik.WinControls.UI.GridFilterCellElement.set_Value(Object value)

at Telerik.WinControls.UI.RadGridView.UpdateFiltering()

at Telerik.WinControls.UI.RadGridView.OnValueChanged(Object sender, EventArgs e)

at Telerik.WinControls.UI.RadGridView.CallValueChanged(Object sender, EventArgs e)

at Telerik.WinControls.UI.BaseGridEditor.OnValueChanged()

at Telerik.WinControls.UI.RadComboBoxEditor.comboBoxElement_TextChanged(Object sender, EventArgs e)

at Telerik.WinControls.RadItem.OnTextChanged(EventArgs e)

at Telerik.WinControls.UI.EditorBaseElement.OnTextChanged(EventArgs e)

at Telerik.WinControls.RadItem.OnPropertyChanged(RadPropertyChangedEventArgs e)

at Telerik.WinControls.UI.PopupEditorBaseElement.OnPropertyChanged(RadPropertyChangedEventArgs e)

at Telerik.WinControls.UI.RadComboBoxElement.OnPropertyChanged(RadPropertyChangedEventArgs e)

at Telerik.WinControls.RadObject.RaisePropertyNotifications(RadPropertyValue propVal, Object oldValue, Object newValue, ValueSource oldSource)

at Telerik.WinControls.RadObject.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

at Telerik.WinControls.RadElement.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

at Telerik.WinControls.RadObject.SetValue(RadProperty property, Object value)

at Telerik.WinControls.RadItem.set_Text(String value)

at Telerik.WinControls.UI.RadComboBoxElement.set_Text(String value)

at Telerik.WinControls.UI.RadComboBoxElement.SyncTextWithItem()

at Telerik.WinControls.UI.ComboPopupForm.listBoxElement_SelectedIndexChanged(Object sender, EventArgs e)

at Telerik.WinControls.UI.RadListBoxElement.OnSelectedIndexChanged(SelectedIndexChangedEventArgs e)

at Telerik.WinControls.UI.RadListBoxElement.DispatchSelectionEvents(Boolean selectedIndex, Boolean selectedItem, Object oldValue)

at Telerik.WinControls.UI.RadListBoxElement.SetSelectedIndex(Int32 value, Boolean fireEvents)

at Telerik.WinControls.UI.RadListBoxElement.set_SelectedIndex(Int32 value)

at Telerik.WinControls.UI.RadListBoxElement.HandleSelectOne(Int32 newIndex)

at Telerik.WinControls.UI.RadListBoxElement.ProcessSelection(Int32 newIndex, Boolean onMouseDrag, InputDevice device)

at Telerik.WinControls.UI.RadListBoxElement.ProcessMouseSelection(RadItem item, MouseNotification reason)

at Telerik.WinControls.UI.RadListBoxItem.DispatchMouseNotification(MouseNotification notification)

at Telerik.WinControls.UI.RadListBoxItem.OnMouseUp(MouseEventArgs e)

at Telerik.WinControls.RadElement.OnCLREventsRise(RoutedEventArgs args)

at Telerik.WinControls.RadElement.OnBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadItem.OnBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadElement.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadElement.DoMouseUp(MouseEventArgs e)

at Telerik.WinControls.RadElement.CallDoMouseUp(MouseEventArgs e)

at Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)

at Telerik.WinControls.RadControl.OnMouseUp(MouseEventArgs e)

at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

at Telerik.WinControls.RadControl.WndProc(Message& m)

at Telerik.WinControls.UI.RadPopupControlBase.WndProc(Message& m)

at Telerik.WinControls.UI.ComboPopupForm.WndProc(Message& msg)

at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(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(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.Run(Form mainForm)

at Sivan3.Program.Main() in D:\Sivan3\trunk\src\PC\Sivan3\Program.cs:line 32

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()

InnerException:

on the databound columns, it throws an exception that an Object Must implement IConvertible.

Thanks,

Nadav Ben-Gal

GridView

answered on 03 Sep 2012

5 answers

151 views

Exception in Visual Studio 2012 when Telerik WinForms searching update

Hi!
After updated Telerik WinForms VS Extension via PackageManager in Visual Studio 2012 i got the error message with exception.
See the attached picture.

My Telerik WinForms VS extensions version is 2012.2.815.0.
Visual Studio 2012 RC.

The error only appears after opening one of my solutions. After clicking "ok" everything works fine.

Visual Studio Extensions

answered on 31 Aug 2012

7 answers

273 views

Updating from version Q3 2009 SP1 to Q2 2012

Hi,

We are currently using telerik Q3 2009 SP1. In order to use the latest feature like SpellCheker, Richtextbox with import\export rtf functionalities, We would like to update our product to the latest version Q2 2012 (Version 2012.2.608).

When we are trying to remove the old telerik dlls reference and add the new telerik dlls, it gives the compilation error for some of the following control.

1. Listbox
2. Combobox
3. TabItem
4. Gridview

We did add the dlls from bin40 directory. And, we were trying to import the namespace for Telerik.QuickStart. But, even then, it throws the compilation error.

Please let us know, what are we missing here.

We would appreciate your immediate response on this.

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 31 Aug 2012

13 answers

790 views

Alternating row color

How can I set every alternating row to a different backcolor? Do I have to do that in the Theme manager or what?

GridView

answered on 31 Aug 2012

6 answers

555 views

TextBoxColumn FormatString in Editors

Hello,

I am using a GridViewTextBoxColumn to display decimal values, and I am applying a formatstring like "{0:0.00##########}" to the column to trim off what may be several trailing zeros in the data. The data is formatted properly and looks great in the column, but when I go to edit the data by double-clicking, the formatstring is no longer applied. So my edit box is filled up with the trailing zeros, making editing cumbersome to the user. Is there a way I can apply my formatstring to what shows up in the editor as well?

Thank you,

Rachel

GridView

answered on 31 Aug 2012

5 answers

440 views

Random crashes

Using an Object-Relational hierarchy with two levels, I keep getting random crashes in the grid related to index out of bound or removing an item that is not in a collection when calling BindingList<T>.ResetItem. I have already opened a support ticket, but Telerik Support could not recreate the problem, hence no real help was provided.
It is hard to recreate the problem, but I would think with the detailed stack trace of the crashes, it should help point out where in the code it happens and add appropriate error handling.

Below is the stack trace of one of many crashes I have been getting, please let me know if you have seen similar problem before, or have any hints to get around this issue.

System.ArgumentException: Cannot remove the specified item because it was not found in the specified Collection.

at System.Collections.CollectionBase.System.Collections.IList.Remove(Object value)

at Telerik.WinControls.RadElementCollection.Remove(RadElement value)

at Telerik.WinControls.UI.GroupPanelElement.UpdateView()

at Telerik.WinControls.UI.GroupPanelElement.ProcessEvent(GridViewEvent eventData)

at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(GridViewEvent gridEvent, PriorityWeakReferenceList list, GridEventProcessMode processMode)

at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(GridViewEvent gridEvent)

at Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(GridViewEvent gridEvent)

at Telerik.WinControls.UI.GridViewSynchronizationService.OnPostCallback(Object state)

Thanks,
Andy

GridView

answered on 30 Aug 2012

5 answers

250 views

[Solved] Hide Overflow menu, Outlook View

Hi support,

Is it possible to hide the overflow menu with a tab strip in Outlook view mode?

Regards,
Nadia

PageView

answered on 30 Aug 2012

1 answer

146 views

Customer Recurrence Dialog

Hi,

I tried to create and use a custom Recurrence Dialog derived from EditRecurrenceDialog. I've not found a factory like IAppointmentFactory for appointment dialogs so I tried to use the derived dialog directly in the event handler:

private void radScheduler1_RecurrenceEditDialogShowing(object sender,

Telerik.WinControls.UI.RecurrenceEditDialogShowingEventArgs e)

{

e.RecurrenceEditDialog = new My

RecurrenceDialog(e.Appointment);

}

But it always shows the standard dialog layout. What I'm doing wrong?

Scheduler and Reminder

answered on 30 Aug 2012