Questions on UI for WPF Forum

2 answers

330 views

Hello there,

In the RadGridView, when the grid is grouped by a column, each group header row has an arrow icon on the left hand side pointing up or down to indicate whether the group is expanded or not. Is it possible to change that icon to a custom icon?

Thanks

Russell

GridView

answered on 09 Sep 2015

2 answers

145 views

Increase Scroll Lines when scrolling with mouse wheel

On Gridview, I have a request to make the grid scroll more rows when using the mouse wheel then it is doing now. I have looked up things like SystemInformation.MouseWheelScrollLines property. So is there an easier way to make the mouse wheel go through rows faster when using the mouse wheel?

GridView

answered on 09 Sep 2015

2 answers

427 views

ComboBox IsEditable TabIndex doesn't work

I attached a small project illustrating a problem. I have combo boxes and text boxes on the control. When I do not apply any properties on my components and start the application my tab order is perfectly fine. I hit tab and it goes to first combo cox then to cext etc. Exactly the way tab index is set up. But as soon as I add property IsEditable="true" to my combo box it messes it up. When I start application it omits combo box and it goes straight to text box, then it omits another combo box and it goes again straight to text box. Please advice how to fix this tab problem issue. I want to have this editable and have tab index going top down and left right.

Second question. I applied style with ThemeType=telerikControls:Windows8Theme how can I have yellow rectangle around the focused combo box this theme gives gray one which is very hard to recognize.

ComboBox

answered on 09 Sep 2015

3 answers

97 views

Automatic conversion

Hi,

When i select "automatic conversion" for minor tick lenght and major tick lenght, and if i put a large zoom, i have this problem (Attach file).

This is normal?

How can i just put 6:00/6:15/6:30/6:45 instead of 6:00/6:1515/6:3030/6:4545?

Thanks

ScheduleView

answered on 09 Sep 2015

3 answers

93 views

DateContinuousAxis Grid Labels

Hi

I would like to ask if there is an easy solution to create a grid on the x-axis of a datecontinuous axis.

e.g. every x second/minute/hour depending on the total timespan shown in the chart there will be a tick/grid line. independent if there exist a value for that specific datetime

thanks for your help!

ChartView

answered on 09 Sep 2015

6 answers

121 views

RadGridView Drag and Drop from / to GridViewColumnGroup

Hi

I need to drag and drop from / to GridViewColumnGroup of RadGridView.

I haven't found any example or guide how to do it.

Setting up DragDropManager events (like DragInitializeHandler, DropHandler ... ) to RadGridView doesn't work on GridViewColumnGroup.

Drag and drop from / to GridViewCells and GridViewHeaderCells works, but GridViewColumnGroup doesn't.

Does anyone know how to drag and drop from / to GridViewColumnGroup?

DragAndDrop

answered on 09 Sep 2015

1 answer

67 views

RadColorSelector SelectedColour change on touch

Hi.

RadColorSelector - SelectedColour property doesn't change on Touch event. Appears yellow circle in random places of the screen:
Theme - Windows8Touch
dll version - 2015.1.225.45

ColorPicker

answered on 08 Sep 2015

2 answers

205 views

Bind to SelectedAppointments

Hey,

I am using a custom AppointmentSelectionBehaviour to prevent the user from selecting Appointments with more than 2 different resource types. This works correctly. The problem is that I wish to bind to the selected appointments. There is a property on the RadScheduleView called "SelectedAppointments" but I am not able to bind to it. Am I doing something wrong? I want to be able to modify the selected appointments in my view model.

Thanks

ScheduleView

answered on 08 Sep 2015

8 answers

346 views

Suppress IDataErrorInfo validation in GridView

Hi,

In my application data entities implement both INotifyDataErrorInfo and IDataErrorInfo interfaces. When I bind these entities to the GridView control and perform validation I get each error listed twice in the error tooltip. I believe it happens in GridViewBoundColumnBase.GetDataErrorValidationErrors() method which collects errors using both interfaces mentioned above.

Can I somehow disable validation via IDataErrorInfo interface?

It's WPF application, .NET 4.5, Telerik contols version 2012.3.1017.45

Thanks,
Victor

GridView

answered on 08 Sep 2015

2 answers

135 views

RadScheduleView - Drag from ListBox

Hi, I’m having trouble implementing drag & drop of custom appointments into RadScheduleView and would be thankful if anyone could point me in the right direction.

I have a ListBox (standard WPF} which contains some items (files to be played). User can drag these items and place them onto RadSchedule (play time). I figured out how to enable dragging and transform the data into Appointment. I can see the created item when it’s being dragged over schedule view, but when I release the mouse /Drop/ nothing happens.

Item is not added to bound Appointments collection, nor is any *Drop event being raised. I should note there is a “Forbidden” mouse cursor icon when dragging.

When I drag & resize appointments, that are already present in collection, everything works as expected.

I was even able to reproduce it with this simplified example:

public class MainWindowViewModel

{

public MainWindowViewModel()

{

appointments.Add(

new Appointment()

{

Start = DateTime.Now,

End = DateTime.Now.AddHours(1),

Subject = "Test"

});

}

//ItemsSource for listbox

private ObservableCollection<string> strings = new ObservableCollection<string>() { "First", "Second", "Third" };

public ObservableCollection<string> Strings

{

get { return strings; }

set { strings = value; }

}

//ItemsSource for RadSceduleView

private ObservableCollection<Appointment> appointments = new ObservableCollection<Appointment>();

public ObservableCollection<Appointment> Appointments

{

get { return appointments; }

set { appointments = value; }

}

Behavior to transform dragged string into appointment collection:

public class DropBehavior : ScheduleViewDragDropBehavior

{

public override IEnumerable<IOccurrence> ConvertDraggedData(object data)

{

if (Telerik.Windows.DragDrop.Behaviors.DataObjectHelper.GetDataPresent(data, typeof(ListBoxItem), false))

{

var lbItem = Telerik.Windows.DragDrop.Behaviors.DataObjectHelper.GetData(data, typeof(ListBoxItem), false) as ListBoxItem;

return new Appointment[] {

new Appointment() { Subject = (string)lbItem.DataContext }

};

return base.ConvertDraggedData(data);

}

And final XAML:

<Window x:Class="ScheduleViewTest.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:local="clr-namespace:ScheduleViewTest"

Title="MainWindow" Width="640" Height="480">

<Window.DataContext>

<local:MainWindowViewModel/>

</Window.DataContext>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition/>

<ColumnDefinition Width="15"/>

<ColumnDefinition Width="3*"/>

</Grid.ColumnDefinitions>

<ListBox ItemsSource="{Binding Strings}">

<ListBox.ItemContainerStyle>

<Style TargetType="ListBoxItem">

<Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True"/>

</Style>

</ListBox.ItemContainerStyle>

</ListBox>

<telerik:RadScheduleView x:Name="scheduler" Grid.Column="2" AllowDrop="True"

AppointmentsSource="{Binding Appointments}">

<telerik:RadScheduleView.ViewDefinitions>

<telerik:DayViewDefinition/>

<telerik:MonthViewDefinition/>

</telerik:RadScheduleView.ViewDefinitions>

<telerik:RadScheduleView.DragDropBehavior>

<local:DropBehavior/>

</telerik:RadScheduleView.DragDropBehavior>

</telerik:RadScheduleView>

</Grid>

</Window>

As for version I'm using "2013.2.611.45" and preferably would like to avoid updating (legacy app)

Thanks for help and suggestions in advance.

Matej

ScheduleView

answered on 08 Sep 2015