hi

I was using RadWindow as my main window.

it was correctly in the 2019 version but after updating to the new version the preview stopped showing.

What should I do to solve the problem?

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i found my answer in https://docs.telerik.com/devtools/wpf/controls/radwindow/how-to/use-radwindow-as-user-control

i must add

Style="{StaticResource RadWindowStyle}" 

to radwindow prperty

Hi Team,

I need to stop refreshing once the filter is applied.

Example.I have lot of items in one panel ,If I selected item1 in that panel and applied filter in the RadPropertyGrid  for some fields.

And then I will select sencond item in the grid.Now,the RadPropertyGrid  should display the filtered fields but it showing entire fileds.

How to achieve this.

Or give me a solution to set the text for the searchasyoutype textbox from codebehind

Can you please help me to creating  a custom connect.

Can you give me a small example as shown in below picture.

Hello,

I have an application where I store and add messages from the database. On startup I manually ladd the last so much messages from the database.

When I initially load, all messages and TimeBreaks are displayed fine. However the last message is not in view. The Chat shows the first lines and the scroll bar is positioned at the top, not at the bottom.

When I add new messages via the inputline, the message is in view

I use Telereik 2024.3.821.462

These message are added using the followin code:

View (code behind) => SendMessage event

 private void RadChat_SendMessage(object sender, SendMessageEventArgs e)
 {
     e.Handled = true;
     var updatedMessageText = (e.Message as TextMessage).Text;
     ViewModel.AddMessage(updatedMessageText);
 }

ViewModel => AddMessages

public async void AddMessage(string updatedMessageText)
{
    Message newMessage = new Message();
    newMessage.Author = CurrentAuthor.Name;
    newMessage.MessageDate = DateTime.Now;
    newMessage.MessageText = updatedMessageText;

    newMaxMessageId = _dashboardDao.InsertMessages(newMessage);

    ReadMessages();

}

private async void ReadMessages()
{
    IsReloading = true;
    newMaxMessageId = _dashboardDao.GetMaxMessageID();

    if (newMaxMessageId > currentMaxMessageId)
    {

        IEnumerable<Message> newMessages = await _dashboardDao.GetNewMessages(currentMaxMessageId, _sharedVM.NumMessageBoardMessages);
        newMessages = newMessages.OrderBy(x => x.MessageId).ToList();

        if (newMessages.Count() > 0)
        {
            if (!IsActive)
            {
                if (_ShowNewMessages)
                {
                    numNewMessages += newMessages.Count();
                    HasMessagesData hasMessagesData = new HasMessagesData(true, numNewMessages);
                    _sharedVM.HasMessages = hasMessagesData;
                }
                else
                {
                    numNewMessages = 0;
                }
            }
            else
            {
                numNewMessages= 0;
            }
        
            NewTextMessages = new ObservableCollection<TextMessageModel>();
    
            newMessages = newMessages.Where(x => x.MessageId > currentMaxMessageId);
            NewTextMessages.Clear();
            foreach (Message message in newMessages)
            {
                if (message.Author == CurrentUser)
                {
                    NewTextMessages.Add(new TextMessageModel() { Text = message.MessageText, Author = CurrentAuthor, CreationDate = message.MessageDate });
                }
                else
                {
                    NewTextMessages.Add(new TextMessageModel() { Text = message.MessageText, Author = new Author(message.Author), CreationDate = message.MessageDate });
                }
                if (_ShowNewMessages)
                {
                    _eventAggregator.GetEvent<NewMessageShownEvent>().Publish();
                }

            }
            currentMaxMessageId = newMessages.Last().MessageId;
            OnPropertyChanged(nameof(NewTextMessages));
        }
    }
    _ShowNewMessages = true;
    IsReloading = false;
}

View (code behind) triggerd by OnPropertyChanged(nameof(NewTextMessages))

his.ViewModel.PropertyChanged += (sender, args) =>
{

    if (args.PropertyName == "NewTextMessages")
    {
        AddNewMessages();
    }
};

private void AddNewMessages()
{

    foreach (var newMessage in ViewModel.NewTextMessages)
    {
        if (chat.LastMessage == null)
        {
            this.chat.AddTimeBreak(newMessage.CreationDate.DayOfWeek.ToString() + " " + newMessage.CreationDate.ToString("MMMM") + " " +  newMessage.CreationDate.Day.ToString() + ", " + newMessage.CreationDate.Year);
        }
        else
        {
            if ((chat.LastMessage.CreationDate.Year != newMessage.CreationDate.Year) || (chat.LastMessage.CreationDate.Month!= newMessage.CreationDate.Month) || (chat.LastMessage.CreationDate.Day != newMessage.CreationDate.Day))
            {
                this.chat.AddTimeBreak(newMessage.CreationDate.DayOfWeek.ToString() + " " + newMessage.CreationDate.ToString("MMMM") + " " + newMessage.CreationDate.Day.ToString() + ", " + newMessage.CreationDate.Year);
            }
        }
        var textMessage = new TextMessage(newMessage.Author, newMessage.Text, "sent", newMessage.CreationDate);
        this.chat.AddMessage(textMessage);
    }
}

Hi,

I need to add a DateField to a TableCell in a RichTextBox so that when a user clicks on the cell in the UI a calendar is displayed. 

I can see from the XAML that this is achieved by using the InsertSdtCommand with a CommandParameter of Date, how can a similar result be achieved from within the code.

Thank you.

I am using DateTimePicker on WPF and I would like to know if there is a way to modify the bacjgroud color of the DateTimePicker for a couple of dates.

Thank you in advance.