I use the Telerik libraries 2014.2.811.45.

I have a tree which can be edited by the user. The user as well can adjust the width of the tree and make it narrow enough to cut off some of the node names.

This post here (http://www.telerik.com/forums/treeview-tooltips-instead-of-horizontal-scroll-bar) seems to solve the problem but is unfortunately outdated. The API has changed meanwhile - the functions/properties don't exist any more.

Still I tried to adjust the solution to my library version but I couldn't get it work. The solution gets the bounds of the tree and each of its items and compares them. This seems to be an easy and adequate solution which I would like to use as well. Trying out different properties showed me the following: Width seems to return NaN. ActualWidth seems to return pretty much the width of the tree whether it is called on the tree or the node. I would expect it to return the width of the node name if called on the node. Further I could not find a property to get the right border of the tree/items.

How can I solve this problem with my telerik libraries?

I am using a RadColumnSparkline inside a RadTimebar but can't style the columns so they look a bit better than out of the box.

I want the columns to have a margin between each other, rounded tops and a dark border color. 

I've already tried to overwrite the telerik column style to tackle the rectangle for the column but no column was shown:

  <telerik:RadColumnSparkline.Resources>
<Style TargetType="telerik:Column" BasedOn="{StaticResource ColumnStyle}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="telerik:Column">
<Rectangle Stroke="Black" Margin="5,0,5,0"  Fill="{TemplateBinding Fill}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</telerik:RadColumnSparkline.Resources>

I've attached an image  of  how they currently look .

This is the code for the timebar:

<telerik:RadTimeBar 
Grid.Column="1"
x:Name="TimeBar"
PeriodStart="{Binding AppearanceSearchOverview.PeriodStart, Converter={StaticResource DateTimeToLocalTimeConverter}}"
PeriodEnd="{Binding AppearanceSearchOverview.PeriodEnd, Converter={StaticResource DateTimeToLocalTimeConverter}}"
VisiblePeriodStart="{Binding ElementName=TimeBar, Path=PeriodStart}"
VisiblePeriodEnd="{Binding ElementName=TimeBar, Path=PeriodEnd}"
Selection="{Binding Path=TimeRange, Converter={StaticResource TelerikTimeRangeConverter}, Mode=TwoWay}"
MinSelectionRange="00:01:00"
MaxSelectionRange="72:00:00"
MinZoomRange="00:15:00"
Background="{StaticResource PanelBackgroundBrush}"
SelectionTitleFormatString="{}{0:HH':'mm':'ss} - {1:HH':'mm':'ss}"
IsSnapToIntervalEnabled="False">
<telerik:RadTimeBar.Intervals>
<telerik:DayInterval />
<telerik:HourInterval />
<telerik:MinuteInterval IntervalSpans="5" />
</telerik:RadTimeBar.Intervals>
<Grid>
<telerik:RadColumnSparkline 
AutoRange="False"
ItemFill="#3D6F99"
MinYValue="{Binding AppearanceSearchOverview.MinValue}"
ItemsSource="{Binding AppearanceSearchOverview.Results}"
XValuePath="X"
MinXValue="{Binding ElementName=TimeBar, Path=PeriodStart}"
MaxXValue="{Binding ElementName=TimeBar, Path=PeriodEnd}"
YValuePath="Y"/>

</telerik:RadTimeBar>

Hello Telerik Team,

I want to add a button on a gridview column header. For that I wrote a custom control that inherits from GridViewDataColumn. The custom control sets the GridViewHeaderCellStyle and implements a command.

Here the style:

<ResourceDictionary 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:controls="clr-namespace:MyControls">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2016;component/Themes/Telerik.Windows.Controls.GridView.xaml" />
    </ResourceDictionary.MergedDictionaries>

    <Style TargetType="telerik:GridViewHeaderCell" BasedOn="{StaticResource GridViewHeaderCellStyle}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate>
                    <StackPanel>
                        <TextBlock Text="myText"/>
                        <telerik:RadButton Content="myButton" Command="{Binding TestCommand, RelativeSource={RelativeSource FindAncestor, AncestorType=controls:hGridViewDataColumn}}"/>
                    </StackPanel>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>

And the custom control:

namespace MyControls
{   
    public class hGridViewDataColumn : GridViewDataColumn
    {
        static hGridViewDataColumn()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(hGridViewDataColumn), new FrameworkPropertyMetadata(typeof(hGridViewDataColumn)));
        }

        public hGridViewDataColumn()
        {
            HeaderCellStyle = FindResource("hGridViewHeaderCellStyle") as Style;
        }

        private ICommand _testCommand;
        public ICommand TestCommand
        {
            get
            {
                return ...;
            }
        }
    }
}

Unfortunately the binding doesn't work. What's wrong?

Hello,
I'm using Telerik 2017.2.614.45.NoXaml but the Vertical and Horizontal scrollbars are not appearing for RadRichTextBox. See attached the XAML and the Telerik dlls that are referenced. What else is missing?

Also our application has Theme which applies to all other Telerik controls except RadRichTextBox. Any idea why?

Hi Team, 

I am looking to read the content of a specific page from RADRichTextBox with  below features

1. Define Page Start ( from page number) and Read all Data(Text, Image, Symboles etc) up to a given document position. Identify lines, paragraph,  Image etc individually.

2. Track location changes of any content or image, for example, User inserted any image but later on changes the location of image in RichTextBox

3. How can we search lines, Images and get the location coordinates of same?

4. How to know the page properties like font, size, margins etc.

5. how to validate the content of the PDF page from another PDF stream.

6. Merge multiple PDF streams( generated by another source)

Kindly help me to know on this and let me know for any question.

RadRichTextBox is realy a very powerful control, except when comes to using Arabic language. However, I made many posts regarding this issue and came up with e result; where such problems regarding Arabic language may be managed later on in next releases.

Any way, I found a work around; where I captured keyboard messages and replaced numbers with their Arabic representations using the following function:

Where _char is an english number (e.g. 2,3,4,...) and the return string is the Arabic representation.

My question is: how to use such function to replace English numbers coming up from numbered lists, with their Arabic representation? I tried using ListLevelStyle but I could not find where lies the up coming numbers of the list.

Any help would be greatly appreciated .....

The attached image shows my requirement:

Hello Telerik Forum,

We have a problem in the EditAppointment dialog of the ScheduleView. In ower Software we have two options to view an appointment.

the first one is over the ScheduleView with wich we have no problems. the second one is over a RadGridView.

If we open an Appointment over the RadGridView we use:

"RadScheduleViewCommands.EditAppointment.Execute(appointment, scheduleView);" to get a EditAppointment dialog.

Now if we change the start- or endtime of the appointment we get an NullReference exception by calling the "DateSpan(IDateSpan)" Constructor. This error occurs only by editing the appointment via RadGridView. So we have no influence by saving the appointment.

Here is the snippet of the StackTrace where the error appears:

System.NullReferenceException: object reference not set to an instance of an object.
   bei Telerik.Windows.Controls.ScheduleView.DateSpan..ctor(IDateSpan other)
   bei Telerik.Windows.Controls.ScheduleView.Slot..ctor(IOccurrence occurence)
   bei Telerik.Windows.Controls.ScheduleView.ReadOnlyBehavior.CanEditAppointment(IReadOnlySettings readOnlySettings, IOccurrence occurrence)
   bei Telerik.Windows.Controls.ScheduleView.ReadOnlyBehavior.CanSaveAppointment(IReadOnlySettings readOnlySettings, IOccurrence occurrence)
   bei Telerik.Windows.Controls.ScheduleViewBase.OnAppointmentEditConfirmed(Object sender, EventArgs e)
   bei Telerik.Windows.Controls.SchedulerDialogViewModel.OnConfirmed(EventArgs eventArgs)
   bei Telerik.Windows.Controls.SchedulerDialogViewModel.<OnConfirmCommand>b__0(SchedulerDialogViewModel vm)
   bei Telerik.Windows.Controls.SchedulerDialogViewModel.DoWithViewModel[T](Object sender, Action`1 action)
   bei Telerik.Windows.Controls.SchedulerDialogViewModel.OnConfirmCommand(Object sender, ExecutedRoutedEventArgs e)
   bei System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
   bei System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
   bei System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
   bei System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
   bei System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e)
   bei System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)
   bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   bei System.Windows.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
   bei System.Windows.Input.RoutedCommand.ExecuteCore(Object parameter, IInputElement target, Boolean userInitiated)
   bei MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
   bei System.Windows.Controls.Primitives.ButtonBase.OnClick()
   bei System.Windows.Controls.Button.OnClick()
   bei Telerik.Windows.Controls.RadButton.OnClick() --> LAST USER INTERACTION

Nice greetings Patrick.