Questions on UI for WPF Forum

5 answers

449 views

Hi

I wanted to set the default DateTimeWatermarkContent for RadDatePicker from Style. At first it seemed not working (the default "Enter date" text appeared), later I have defined the property for each RadDatePicker manually and later removed these manual overrides for some reason. Surprisingly, the Style definition seemed to work now, but only in Visual Studio (I could even change the default value and the designer followed the changes). However, when I have run the application, my style definition was not used ("Enter date", again). Even stranger that from this point on, the designer "forgot" to use the style again as well.

What am I doing wrong? It is possible to set this property from Style?

My code:

<Window.Resources>

</Style>

</ResourceDictionary>

</Window.Resources>
...
<telerik:RadDatePicker Grid.Column="1" Grid.Row="0"></telerik:RadDatePicker>
<telerik:RadDatePicker Grid.Column="1" Grid.Row="2"></telerik:RadDatePicker>

...

Any ideas?

Thanks for the help in advance!

DateTimePicker

answered on 20 Oct 2010

1 answer

252 views

Modal Dialog is not truely Modal

Hello,

I wanted to make a suggestion for your next release of RadWindow. When it is active in a modal state (i.e. prompt or ShowDialog), it does not behave as one would expect. The Tab, Control, and Directional navigation does not operate in a manner that the customer would expect. If you go to your online demo, activate one of the Prompt samples. Than place focus in the address bar and start tabbing. You will notice that the controls behind the prompt get keyboard focus as well as Control and Navigation focus.

It would be great if your prompt was the only thing a user can focus to. I don't have to tell you how much of a problem this is in the case of protected (meaning that if I wanted a user to do something before gaining access to the main application a user can bybass my prompt and interact with the protected controls).

- Rashad Rivera

Window

answered on 20 Oct 2010

2 answers

131 views

Multibinding in RadTreeView

Hi, i've got a problem.
in my project i've a class like this :

public class Progetto

{

public Progetto()

{

ID = 0;

Descrizione = String.Empty;

Stringhe = new ObservableCollection<Stringa>();

Sprites = new ObservableCollection<Sprite>();

}

public int ID { set; get; }

public String Descrizione { set; get; }

public ObservableCollection<Stringa> Stringhe { set; get; }

public ObservableCollection<Sprite> Sprites { set; get; }

}

In my RadTree i'd like to see under the root node (Progetto) the two items "stringhe" and "sprites". I Tried with HierarchicalDataTemplate but with no result because under the root node i can only see "Stringhe" or "Sprites"... how to see that together ?? :

here my Hierrarchical..

<HierarchicalDataTemplate x:Key="Stringa">

<StackPanel Orientation="Horizontal">

<TextBlock Text="{Binding Ciao}" Foreground="Black" FontWeight="Bold" FontSize="12" />

<TextBlock Text="{Binding Descrizione}" Foreground="Black" FontWeight="Bold" FontSize="12" />

</StackPanel>

</HierarchicalDataTemplate>

<HierarchicalDataTemplate x:Key="Sprite">

<StackPanel Orientation="Horizontal">

<TextBlock Text="{Binding ID}" Foreground="Black" FontWeight="Bold" FontSize="12" />

<TextBlock Text="{Binding Descrizione}" Foreground="Black" FontWeight="Bold" FontSize="12" />

</StackPanel>

</HierarchicalDataTemplate>

<HierarchicalDataTemplate x:Key="Progetti" ItemsSource="{Binding Stringhe}"

ItemTemplate="{StaticResource Stringa}">

<StackPanel Orientation="Horizontal" >

<TextBlock Text="{Binding ID}" Foreground="Black" FontWeight="Bold" FontSize="12" />

<TextBlock Text="{Binding Descrizione}" Foreground="Black" FontWeight="Bold" FontSize="12" />

</StackPanel>

</HierarchicalDataTemplate>

Any Idea.. THANX IN ADVANCE

TreeView

answered on 20 Oct 2010

1 answer

91 views

Telerik without theme, or Windows 2000 classic theme

Hello,
is it possible to use Telerik controls without theme eq. mixing standard SL controls with Telerik's?

Teleriks themes is nice, but some conservative customers like old win32 application (Windows 98/2000 gray canvas).

How to use Telerik DataGrid with native Silverlight Button in one place?

Thanks

General Discussions

answered on 20 Oct 2010

2 answers

145 views

start edit mode on-key-down

Hello all,

First of all, I have done some searching on the Telerik forums (and using Google) to find my desired behavior, but I haven't been able to find quite what I'm looking for. If there is another post or how-to that I missed, please direct me there.

I am working with the WPF GridView control, and want to duplicate the behavior of the current WPF Toolkit DataGrid, with regards to editing. When you are focused on a cell (in the WPF DataGrid), you can immediately start typing, and the input cell will switch to edit mode and record that first key stroke, and continue in edit mode. (Think Microsoft Excel as another example.) I have been playing with the RadControls WPF Demo App, and cannot find any example that behaves in this fashion. Speed of data entry is a prime consideration for our users, and most will be using a tablet pc, so the act of double-clicking to change to edit mode makes for an inconvenient extra step.

Hopefully my description is clear... any help is greatly appreciated.
Thanks!
-Matt.

GridView

answered on 20 Oct 2010

1 answer

115 views

XamlParseException because of denied access to tmp-file

Hello,

i have some unsteady and non-reproducible XamlParseExceptions in the context of telerik RadGridView. These exceptions are caused by a denied access to tmp-files in the users temp-dir (eg: "C:\Users\XXX\AppData\Local\Temp\tmp7547.tmp").
The files content is binary (maybe some BAML?). The user is logged in as a normal user (not as administrator).
We are developing a desktop application using the RadGridView for WPF (2009.2) with .NET3.5 and Windows 7.

System.Windows.Markup.XamlParseException: Die in der Assembly "Telerik.Windows.Controls.GridView, Version=2009.2.813.35, Culture=neutral, PublicKeyToken=5803cfa389c90ce7" definierte Instanz von "FrozenColumnsSplitter" kann nicht erstellt werden. Ein Aufrufziel hat einen Ausnahmefehler verursacht.  Fehler in Objekt "PART_FrozenGridViewCellsPanel" in Markupdatei "Telerik.Windows.Controls.GridView;component/themes/office/black/DataCellsPresenter.xaml". ---> System.Reflection.TargetInvocationException: Ein Aufrufziel hat einen Ausnahmefehler verursacht. ---> System.UnauthorizedAccessException: Der Zugriff auf den Pfad "C:\Users\XXX\AppData\Local\Temp\tmp7547.tmp" wurde verweigert.

bei System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)

bei System.IO.File.Delete(String path)

bei System.Windows.Input.Cursor.LoadFromStream(Stream cursorStream)

bei System.Windows.Input.Cursor..ctor(Stream cursorStream)

bei Telerik.Windows.Controls.GridView.GridViewCursors.get_RefreezeCursor()

bei Telerik.Windows.Controls.GridView.FrozenColumnsSplitter..ctor()

   --- Ende der internen Ausnahmestapelüberwachung ---

   bei System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck)

   bei System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache)

   bei System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache)

   bei System.Activator.CreateInstance(Type type, Boolean nonPublic)

   bei System.Windows.Markup.BamlRecordReader.CreateInstanceFromType(Type type, Int16 typeId, Boolean throwOnFail)

Does anyone have any ideas whats happening here and how to avoid it?

thanks
tim

GridView

answered on 20 Oct 2010

2 answers

43 views

Selction Changed triggered before time is selected

I wish to capture the selection changed event for DateTimePicker. But the event is triggered when I select the date and yet to select the time, how to make sure that the event is triggered only after I select both date and time?

DateTimePicker

answered on 20 Oct 2010

5 answers

171 views

custom button

Hi,
I need to add a button to my treeviewitems in code behind (c#).
I don't find any "How to ", can you please help me?

Regards.
/Rodolfo

TreeView

answered on 20 Oct 2010

4 answers

416 views

Does the carousel offer a way to view a full image?

In code, I am attempting to execute the following pseudo code:

On left mouse up
{
   (If the item clicked is an image) and
   (matches Carosel.FindCaroselPanel().TopComtainer)
   {
   Show image preview overlay. // This is not a thumbnail as is inside the carousel. It's a bigger image.
   }
}

I'm fairly certain I'll get this working, but I'm wondering if I'm just missing some functionality that the carousel has. Seems like this would be a common use for it.

Carousel

answered on 20 Oct 2010

1 answer

686 views

How do you enter multiple lines of text in a cell?

Programmatically, if I put text with new line characters in it into a cell, it automatically increases the height and displays the text correctly. The question is, when I'm using the control, how do I type the newline characters in from the keyboard. Enter takes you to the next cell.
I've tried Alt-Enter (like Excel), Ctrl-Enter and Shift-Enter but I can't seem to insert newlines into the text.

Do I need to set a property to enable this sort of behavior?

GridView

answered on 20 Oct 2010