RadTimePicker - unable to localize Close button Text using Localization Provider

Visual Style Builder is unable to start on computer with Italian regional settings.

Selection in RadDateTimePicker when the culture is ar-SA is not correct. Further, changing the selected date using the arrow keys does not set the right value.

Exception is thrown on key press if RadMaskedEditBox has MaskType set to Numeric, Mask to C2, and Value to Null.

RadDateTimePicker ValueChanging event cannot be canceled with e.Cancel = true;

FIX. RadSpinEditor - user should not be able to change the value of the control with the arrow keys when in ReadOnly mode

When you inherit from RadTextBox and override the OnKeyPress or OnKeyDown, those events are not fired.

FIX. RadMaskedEditBox - the minus sign is stripped our with ExcludePromptAndLiterals and IncludePrompt formats with currency mask, while it should not.

To reproduce:
- create a descendant of RadTextBox 
- add RadSpellChecker to the form
- try to check the value of the custom text box

FIX. RadDateTimePicker - setting the value to null, should clear the selection

Steps to reproduce:
1. Add a RadDateTimePicker to a form.
2. Set ShowUpDown to true.
3. Set NullDate to be DateTime.Now
4. Set MinValue to DateTime.Now.Date
5. Set MaxValue to DateTime.Now.AddDays(1).AddSeconds(-1)
6. Try to change the value and press tab to save the value. The value will be set to null.

Steps to reproduce:
1. Add a RadGridView with a browse column to a form
2. Add a new row.
3. Open the editor and type in a value.

After you close the editor you will see that the value is not updated.

1. Create a new project and add a button.
2. On its Click event show and dispose RadColorDialog form
3. Run the project and note how memory consumption increases

Despite the fact that the elements of RadTextBox have ToolTipText and AutoToolTip properties, one can't set the tooltip at design-time. We should consider whether we should continue using these properties or introduce a new method to allow for setting tooltips at design-time.

Resolution:
Open 'Edit UI elements' and set the Tooltip property of RadTextBoxItem 

To reproduce:
1. Drag RadColorDialog to a form
2. Set the SelectedColor and Show the form
3. Close the form, set another SelectedColor and Show the form again.
4. The result is that the circle position is wrong and the values in the editors are wrong.

if user sets the RadDateTimePicker.Checked property to False in the Form load, the editor appears as enabled and user is allowed to make changes.

1. Create a new project
2. Add a button and on this button start a new form containing RadMarkupEditor
3. Open and close this form several times

FIX. RadSpinEditor's Text property should act the same way as the Text property of the element

FIX. RadSpinEditor - TextChanged of the control is not fired. Should fire in the same cases as the TextChanged event of the element.

According to MSDN controls should not change the focus when handling the Enter event