Hello. I'm new to using Telerik and I'm experiencing strange behavior when editing data in the RadGridView control. I have a GridViewMaskedInputColumn and I lose the first character if I start editing the content of the cell by pressing 2 or more keys in quick succession. I've searched and searched these forums (as well as Telerik's guides and Google), but I could not find anything that helped. Please forgive me if I overlooked something.

My project currently using version 2018.1.122.45 of Telerik's WPF suite. 

Here's a snippet of my XAML, please let me know if more detail is needed. 

Please note that the "Mask" property for the column object doesn't actually contain the ">" sign. It uses the correct notation as demonstrated in Telerik's guide, I just can't figure out how to escape it in this forum. 

Thank you for any assistance. 

Hello, my task is show visible links between appoinments (example in the attachment).

Can you explain me how i can recieve the coordinates of each AppointmentItem?

I can recieve it by VisualTreeHelper, but using this approach i recieve only AppointmentItems which are prepared for drawing (due virtualization).  

Maybe i can use more simple way to recieve the coordinates? Or maybe i can disable virtualization for the RadScheduleView?

Hi

  We get this a Critical Error when we try to move around an event in a RadScheduleView:

System.NotSupportedException: Specified method is not supported.
   at Telerik.Windows.Controls.DraggedAppointmentsToLocalizedStringConverter.Convert(Object value, Type targetType, Object parameter, CultureInfo culture)
   at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.Activate(Object item)
   at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
   at System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext(Boolean lastChance)
   at MS.Internal.Data.DataBindEngine.Task.Run(Boolean lastChance)
   at MS.Internal.Data.DataBindEngine.Run(Object arg)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

  Currently we use Telerik version 2018.3.911.45 (Runtime Version V4.0.3.319).

  How can we fix this error?

Thank You,

Dave

Hi,

I'm having some problem with the synchronizing the combobox, when ItemsSource updates.

When I select an object and the combobox update, the item is perfectly synchronized with the selected objects value.

My problem is that my application poll new items every 10 sec and update/refresh the itemssource.  I'm using isSynchronizedWithCurrentItem = true and the combobox just set the first item by default, instead of displaying the actual value from the selected object, as before the itemssource updated.

How can I fix this?

  I've been having version issues with the Telerik DLLs so after lots of research and attempting to fix the issues to no avail I've decided to start a clean project and move my code over piece by piece in hopes of finding the culprit.  Everything is going well so far except my AutoCompleteBox does not show up in design mode or at runtime.  The XAML shows no errors and if you select the markup it highlights where the control should be but it remains invisible.  I had a similar problem with the RadButton but solved that by switching to the native WPF button.

Here is my XAML

This worked fine in my previous project until I started getting the weird errors that set off a frustrating chain of events that led me here. As for Telerik references I tried to minimize down to only what I absolutely needed.  At the moment I have Telerik.Windows.Controls and Telerik.Windows.Controls.Input.  This project was made using the Telerik WPF Project Template so I assumed all controls should work fine.  I am also using RadGlyphs and they are rendering just fine.

Hi,

what is the simplest way to change this white background behind tab "Home" as you can see on screenshot?

Thanks.

Hi, I'm running into an issue with the RadRibbonTab obscuring other content that should be in front of it.

The easiest way to illustrate this is with the attached screenshot. I put a breakpoint in the app when I click on an item inside the radRibbontab what is part of the RadRibbonView. The Z-order of the tab is higher than anything else on the screen, in this case obscuring other applications like visual studio. Note the order of the layers in the screenshot is my running WPF app is behind visual studio as expected, but the expanded ribbon tab is in front of it, obscuring part of visual studio.

This causes other issues in the application as well where the tab obscures other controls until the user explicitly hides the rad ribbon tab by focusing on the other control.

I am using VS Professional 2017, Version 15.8.0, .net version 4.7 and Telerik UI for WPF R3 2018

Thank you,

Chris

     Hi,

i'm trying to use KeyboardCommandProvider, with binding in a MVVM scenario for managing the Enter key(i don't want to move down). I've read this post, https://docs.telerik.com/devtools/wpf/controls/radgridview/commands/keyboardcommandprovider and i try to implement my CustomKeyboardCommandProvider without success; i've a usercontrol with insede a GridView but i've an error message: "The type CustomKeyboardCommandProvider does not include any accessibile constructor". How can i solve it in my scenario?

This is my code:

XAML:

<UserControl.Resources>
        <Conditional:CustomKeyboardCommandProvider x:Key="MyKeyboardCommand" />
    </UserControl.Resources>

<telerik:RadGridView Grid.Column="0" Grid.Row="1" Name="MyRadGridArtworks"
                                ItemsSource="{Binding GridViewList, Mode=TwoWay}"
                                SelectedItem="{Binding GridViewRowSelected, Mode=TwoWay}"                                            
                                EnableColumnVirtualization="False"
                                ValidatesOnDataErrors="None"              
                                ShowColumnSortIndexes="False"
    AutoGenerateColumns="False"
                                telerikControls:StyleManager.Theme="Office2013"                                          
    ColumnWidth="auto"                                         
    CanUserFreezeColumns="True"
                                LeftFrozenColumnCount="3"
                                ShowColumnFooters="True"                                      
                                KeyboardCommandProvider="{StaticResource MyKeyboardCommand}"
                                IsLocalizationLanguageRespected="False"
    RowIndicatorVisibility="Collapsed">

</telerik:RadGridView>

C# --> CustomKeyboardCommandProvider

public class CustomKeyboardCommandProvider : DefaultKeyboardCommandProvider
    {
        private GridViewDataControl dataControl;

        public CustomKeyboardCommandProvider(GridViewDataControl dataControl ) : base(dataControl)
        {
            this.dataControl = dataControl;
        }

        public override IEnumerable<System.Windows.Input.ICommand> ProvideCommandsForKey(System.Windows.Input.Key key)
        {

            if (key != System.Windows.Input.Key.Return)
                // use default behavior for all keys except Return
                return base.ProvideCommandsForKey(key);

            List<ICommand> commandsToExecute = new List<ICommand>();

            if (this.dataControl.CurrentCell == null)
                return commandsToExecute;

            if (this.dataControl.CurrentCell.IsInEditMode)
            {
                commandsToExecute.Add(RadGridViewCommands.CommitEdit);
            }
            else
            {
                commandsToExecute.Add(RadGridViewCommands.ActivateRow);
            }

            return commandsToExecute;
        }
    }

Hello,

I have problem with displaying group headers after when ever I change date in timeline view. There is xaml for schedule view:

GroupDescriptionsSource and ResourceTypesSource are initialized and filled by some data in view model constructor.
On image grupheader-ok.jpg - is all OK and this what I want every when I change date, but if I go to the future date, it displays like on image groupheader-problem.jpg and If I go back to the actual week (current date) then it displays like on image groupheader-problem-back.jpg.

Where could be problem?

Thank you for your answers.