I have a RadObservableCollection which is populated with 2560 DataPoint Objects every 800ms.  Each DataPoint object has a Time and Value property (DateTime and Double).

I only want to store 10 seconds worth of data, so every time I add a value, I check whether the collection contains 10 seconds of data or not already.  If it does, I remove the first item in the collection.

Unfortunately the RemoveAt(0) function on RadObservableCollection is an O(n) operation and this is causing my application to slowdown as my collection grows to it's "full" capacity, which is many thousands of entries.  Because my data is coming in so fast, I need everything to happen in less than 1 second.

I've created an ObservableQueue<T> class which implements INotifyCollectionChanged and has a ConcurrentQueue as the underlying data type, whose TryDequeue operation is O(1).  Like the following:

My new implementation of the code to update the collection is as follows:

However I can't get the solution to work.  Either it locks up my UI or I get a "Collection was modified during enumeration" exception.

Is there any way to better implement a limited size collection where I can remove the first value in O(1) time?

Hi,

I'm trying to use the RadRichTextBow to perform some printings but after lots of tries, the richtextbowx is still always blank....

I even try to create a new project with only a span with no success....

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApplication1"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <telerik:RadRichTextBox x:Name="test">
            <telerik:RadDocument>
                <telerik:Section>
                    <telerik:Paragraph>
                        <telerik:Span Text="Span declared in XAML" />
                    </telerik:Paragraph>
                </telerik:Section>
            </telerik:RadDocument>
        </telerik:RadRichTextBox>
    </Grid>
</Window>

Am I doing something really wrong ? Maybe a missing reference...

Good afternoon,

As the title says, I am looking for a way to add a new pane without navigation to it / having it selected.

I've searched around google and even in the forums and documentation but I haven't found an example or answer (maybe I'm searching for the wrong terms).

Any help will be appreciated.

Thanks in advance,

Diogo

What is the little > on top left of the grid?

If I add group it is always at the top of the 1st group.

Can we hide it? Its confusing as if this is the current row and not the one selected.

Our centralized logging system detected the following exception in one of our customers machines. It's not systematic or frequent: it just randomly happens on that machine: 

And here is the code causing the issue:

They are on a quite old version of our product using Telerik 2014.3.1021.40 (.NET 4.0 and Microsoft Windows NT 6.2.9200.0 64 bit).

Our latest version includes Telerik 2015.3.930.40: as far as you guys know, the new version solves that issue?

Thank you,

Regards,

Manuel

Hi @all,

Im new to Telerik and currenty trying to implement some Telerik Controls (Trial) to an existing Solution.

Two Projects in the solution are WPF Control Libraries.

After installing Telerik for WPF and changing the standard Windows controls to Telerik controls, everything worked as expected.

For Deployment we need to place our references to a different FilePath (Not the Telerik Installation Path).

But after copying the dll-Files to this path and re-reference them from the new path into the solution, no Telerik-Controls are visible

on the UI anymore. The remaining Standard-Windows-Controls (which we have not switches to Telerik yet) are still visible.

Are there best practices to reference the Telerik-Binaries without installing the Telerik-Setup for WPF Controls?

Any suggestions on this?

Thanks in advance

Andreas Geier

Hello,

 We are using  RichTextBox control for Mail merge functionality to implement in our system. Our requirement is to complete the mail merge and print the entire document.

When the print is completed, we would like to know that the printing job is completed successfully for all pages to perform some insert/update operations in the database. We are using the following code to check the printing job is success, but we are not getting the PrintJobInfoCollection results.

 RadDocument _MergedDocument = this.radRichTextBox.MailMerge();
                if (_MergedDocument != null)
                {
                    this.radRichTextBox.Document = _MergedDocument;

                    PrintSettings _PrintSettings = new PrintSettings()
                    {
                        DocumentName = "My document",
                        PrintMode = PrintMode.Native,
                        PrintScaling = PrintScaling.None                        
                    };

                    PrintDialog _PrintDialog = new PrintDialog();
                    _PrintDialog.PageRangeSelection = PageRangeSelection.AllPages;
                    _PrintDialog.UserPageRangeEnabled = true;
                    Nullable<Boolean> print = _PrintDialog.ShowDialog();
                    if (print == true)
                    {                        
                        this.radRichTextBox.Print(_PrintDialog, _PrintSettings);                        
                        PrintJobInfoCollection jobs = _PrintDialog.PrintQueue.GetPrintJobInfoCollection();
                        foreach (PrintSystemJobInfo theJob in jobs)
                        {
                            if (((theJob.JobStatus & PrintJobStatus.Completed) == PrintJobStatus.Completed) || ((theJob.JobStatus & PrintJobStatus.Printed) == PrintJobStatus.Printed))
                            {
                                MessageBox.Show("completed");
                            }
                        }
                    }                    
                }

Thanks

I use BingMapProvider with IsTileCachingEnabled set to true, and I notice memory leak because of the cache even though I call the Dispose() function for the provider class.

Currently I have a workaround by deriving a CustomBingMapProvider from BingMapProvider to expose the MapSources to public. When disposing, I set all the CacheStorage of the MapSources to null. This workaround works for me.

 Do you have any idea or any solution to dispose the cache properly?

Hello,

When we create a mail merge file and click on preview results, the formatting of the document becomes improper as shown in 'MailMerge2'.

 As you can see in 'MailMerge1', we are able to see the proper formatting when we click Show Field Names. 

 However Ms Word Mail merge feature works properly in the same scenario.