Questions on UI for WinForms Forum

3 answers

158 views

[Solved] Always use Appointment edit dialog

Is there an option in the RadScheduler to force the user to use the edit dialog?

Default the user is able to type the appointments directly in the scheduler. In this case the only field that is being used is the Subject.
I created a custom edit dialog, and added a few fields. These fields are mandatory, and to fill this fields the user needs to use the edit dialog.

So is this possible?

Scheduler and Reminder

answered on 04 Nov 2013

5 answers

195 views

Gantt view Time line Format.

Is it possible to view large timeline events in Gantt view.
with Year as uppertimelineformat and Month as LowertimeLineformat

some thing like:
2010 2011 2012 2013
1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12

can you suggect the code snippet for this.

GanttView

answered on 04 Nov 2013

1 answer

143 views

[Solved] possibility of rotation

Hi,
Is there any possibility to rotate the document in PdfViewer (winforms)?
And about zoom, it is possible programmatically, manipulate these?

Thanks.

PdfViewer and PdfViewerNavigator

answered on 04 Nov 2013

1 answer

564 views

Keep OldValue when cell is not valid in CellValidating event

I want to lose focus and keep e.OldValue if cell is not valid in CellValidating event. Similar behavior to pressing ESC.
I wrote this code:

private object _cachedOldValue;

private bool _isValidValue;

private void radGridViewIssues_CellValidating(object sender, CellValidatingEventArgs e)

{

_isValidValue = true;

RadGridView radGridView = sender as RadGridView;

if (radGridView == null || !radGridView.IsInEditMode)

{

return;

}

ValidationResult validationResult = _presenter.ValidateCurrentValue(e.Column.Name, e.Value);

if (!validationResult)

{

_isValidValue = false;

_cachedOldValue = e.OldValue;

}

private void radGridViewIssues_CellValidated(object sender, CellValidatedEventArgs e)

{

RadGridView radGridView = sender as RadGridView;

if (radGridView == null)

{

return;

}

if (!_isValidValue)

{

radGridView.CurrentCell.Value = _cachedOldValue;

}

My column has float? datatype. It works with digits, but throws an exception, when I write some letters.

How can I achieve the desired functionality?

GridView

answered on 04 Nov 2013

3 answers

194 views

making resource a mandatory field

Hello,

I read of someone removing the (none) and (any) options from the resources dropdown on the AppointmentEdit form, what I like is to keep (none) and if the user does not select a resource other than (none) prompt the user to select a valid resource. I was trying the ApplySettingsToEvent method and it does not look to be firing when I close the Apppointment edit form. Using VS2008 RadScheduler 2012.1.321.20 .

Thanks

Scheduler and Reminder

answered on 01 Nov 2013

3 answers

121 views

Problem with "Check All" in the header cell for a GridViewCheckBoxColumn

I've got a problem with the VB version of the Check All code from the knowledge base:

http://www.telerik.com/support/kb/winforms/gridview/add-check-uncheck-all-check-box-in-the-header-cell.aspx

The difference in my case is that I add the column programmatically to a grid, and it's the last column in the grid.

The code works great unless the grid view is wide enough to cause a horizontal scroll bar. When I scroll sideways, back and forth a few times, I get a NullReferenceException when trying to check or uncheck a check box on an individual record. Screenshot of error below. Full stacktrace is below.

Anyone else have this problem? Any suggestions?

System.NullReferenceException was unhandled

HResult=-2147467261

Message=Object reference not set to an instance of an object.

Source=ProductPricingModeller.WinForms

StackTrace:

at ProductPricingModeller.WinForms.UseCurrentPriceHeaderCellElement.GridControl_ValueChanged(Object sender, EventArgs e) in E:\CODE\JssProductPricingModeller\ProductPricingModeller.WinForms\UseCurrentPriceHeaderCellElement.vb:line 201

at System.EventHandler.Invoke(Object sender, EventArgs e)

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

at Telerik.WinControls.UI.EventDispatcher.RaiseEvent[T](Object eventKey, Object sender, T args)

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

at Telerik.WinControls.UI.RadCheckBoxEditor.SetValue(Object value)

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

at Telerik.WinControls.UI.RadCheckBoxEditor.ToggleState()

at Telerik.WinControls.UI.RadCheckBoxEditorElement.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.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 Telerik.WinControls.UI.RadGridView.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 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(IntPtr 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 ProductPricingModeller.WinForms.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.nExecuteAssembly(RuntimeAssembly 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.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException:

GridView

answered on 01 Nov 2013

3 answers

200 views

[Solved] RadTreeView Scrollbar fall with NullReferenceExceprion

Hi Telerik,

There is a bug with RadTreeView, and scrollbar.

Download source files:
https://dl.dropboxusercontent.com/u/48038910/TreeScrollsCrash.rar

Steps to reproduce the bug:

Run attached application;
Push fill button;
Scroll tree to the end;
Push delete button

Program crashes with null reference exception.

Treeview

answered on 31 Oct 2013

1 answer

121 views

[Solved] Spell Checker Ignore Button

I’ve got a problem with the RadSpellChecker in VB

After calling “RadSpellChecker1.Check” with a standard “RadTextBoxControl”, pressing the ignore button repeatedly checks the first misspelled word and does not progress through the check. It does not move on to the next misspelt word and effectively loops.

If I change words I can get to the end of the check, cancel quits the check but ignore does appear to work as I expect

Has anyone seen this before and can suggest a solution

General Discussions

answered on 31 Oct 2013

3 answers

189 views

rtb - lines overlapping

Hi,
After the update to the latest version, I have noticed the following:
After cutting from ms-word and pasting into rtb I now get the following. The lines seem to squish into each other. I have attached a picture to illustrate my problem.
I have also noticed that some of the earlier saved documents are getting this squish treatment.
Karl

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 31 Oct 2013

3 answers

277 views

Focus issues

I have a RadDropDownList on a form with a label and a button. I have AllowShowFocusCues = true.

When the form is first displayed, the visual cue is NOT displayed. If I tab to the button and back to the DropDownList, then I *do* get the visual cue.

I know that the dropdownlist does get the initial focus because I can use the arrow keys and F4. But when the form is first displayed, the user cannot see where the focus is.

Is this a bug that I should report? Or is there something else that I need to do to get visual cues the first time the form is displayed?

Thanks!

DropDownList

answered on 31 Oct 2013