Last Updated: 01 Jul 2019 14:56 by ADMIN
Release R3 2019 (LIB 2019.2.708)
Maximizing the form cuts off the RadRibbonBar and decreases the content padding.
Last Updated: 01 Jul 2019 14:52 by ADMIN
Release R3 2019 (LIB 2019.2.708)
I would like set timeline start at the same date like scheduler. 
But sometimes it don't refresh (see attachment).
What can I do?
kind regards
Last Updated: 01 Jul 2019 14:49 by ADMIN
Release R3 2019 (LIB 2019.2.708)

Hi there 

I found this issue in RadTreeView filtering

I have a 2-level text structure programmatically created

after creation I use the command


This is the only event handled


Private Sub txtFilter_TextChanged(sender As Object, e As EventArgs) Handles txtFilter.TextChanged

        radtreeNavigazione.Filter = txtFilter.Text

End Sub

When I set a filter with at least 4 letters and then I select the text in the filter box and press "back", the app freezes with cpu working at 50 %. 


I use this workaround to solve

Private Sub txtFilter_TextChanged(sender As Object, e As EventArgs) Handles txtFilter.TextChanged

        radtreeNavigazione.Filter = txtFilter.Text

End Sub


I use this workaround

Private Sub txtFilter_TextChanged(sender As Object, e As EventArgs) Handles txtFilter.TextChanged


      radtreeNavigazione.Filter = txtFilter.Text


End Sub


In this way it works, but I wanted to report the issue.

Thank you in advance for your attention


Last Updated: 01 Jul 2019 14:38 by ADMIN
Release R3 2019 (LIB 2019.2.708)

The latest release of WinForms causes a fatal exception when adding an item to a BindingList that is used in a RadGridView and a RadGanttView.

The first time an item is added there is not issue.

The second time an item is added, the following exception occurs.

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.WinControls.UI.GanttViewBindingProvider.GanttTaskList.IndexOf(Object key)
   at Telerik.WinControls.UI.GanttViewBindingProvider.GanttTaskList.get_Item(Object key)
   at Telerik.WinControls.UI.GanttViewBindingProvider.AddTaskByCM(CurrencyManager cm, Int32 index)
   at System.ComponentModel.ListChangedEventHandler.Invoke(Object sender, ListChangedEventArgs e)
   at System.Windows.Forms.CurrencyManager.OnListChanged(ListChangedEventArgs e)
   at System.Windows.Forms.CurrencyManager.List_ListChanged(Object sender, ListChangedEventArgs e)
   at System.ComponentModel.BindingList`1.OnListChanged(ListChangedEventArgs e)
   at System.ComponentModel.BindingList`1.FireListChanged(ListChangedType type, Int32 index)
   at MissileWarningThreatPlanner.EventWindow.EventList.GenMissileEventWorker_RunWorkerCompleted(Object sender, RunWorkerCompletedEventArgs e) in C:\Shape Source\VS\MissileWarningThreatPlanner - VS2010\MissileWarningThreatPlanner\EventWindow\EventList.cs:line 5329
   at System.ComponentModel.BackgroundWorker.OnRunWorkerCompleted(RunWorkerCompletedEventArgs e)

This is code that has not been modified for quite some time.  There has been no issue until the latest release.

I do not have time to try to create a simple example to try to reproduce the error at this time.  I will if possible.

For now, we are forced to revert to a previous version.



Last Updated: 01 Jul 2019 14:37 by ADMIN
Release R3 2019 (LIB 2019.2.708)

The issue can be reproduced by adding a RadBarCode to the form and setting its value this way:

this.radBarcode1.Value = "";

Last Updated: 28 Jun 2019 08:50 by ADMIN
Release R2 2019 SP1
Created by: Sasa
Comments: 2
Category: GridView
Type: Bug Report
RadGridView data source contains date values from years 2018 and 2019. After adding Excel like filters to the RadGridView and selecting year 2019 no rows were displayed, even though some values did match the filter condition (see attachment).
In Development
Last Updated: 27 Jun 2019 06:50 by ADMIN
To reproduce:

public Form1()

    CultureInfo culture = new CultureInfo("en-US");
    culture.DateTimeFormat.FirstDayOfWeek = DayOfWeek.Monday;
    this.radScheduler1.Culture = culture;
    this.radScheduler1.ActiveViewType = Telerik.WinControls.UI.SchedulerViewType.Month;

    Appointment a = new Appointment(new DateTime(2016, 8, 29, 0, 0, 0), new DateTime(2016, 9, 5, 0, 0, 0), "Meeting");


    this.radScheduler1.FocusedDate = new DateTime(2016, 9, 1);

Please refer to the attached gif file.
Last Updated: 25 Jun 2019 06:48 by ADMIN
Under Review
Last Updated: 19 Jun 2019 14:58 by ADMIN

Hello Guys,


Good Evening , As per your suggestions i make my custom treeview node with LiteVisualElements .

In That Node i have taken one StackLayoutElement and RoundRectShape assigned to it but still panel shows corners instead of round edges,

i tried with different properties and styles but not get succeed , so please help me out.

here i have attached image of my node and "stackLayoutElement" code too.

spnlControls = new StackLayoutElement();
            spnlControls.Orientation = Orientation.Horizontal;
            spnlControls.NotifyParentOnMouseInput = true;
            spnlControls.DrawFill = true;
            spnlControls.DrawBorder = true;
            spnlControls.Shape = new RoundRectShape(4);
            spnlControls.BackColor = Color.Transparent;
            spnlControls.BackColor2 = Color.Transparent;
            spnlControls.BackColor3 = Color.Transparent;
            spnlControls.BackColor4 = Color.Transparent;
            spnlControls.BorderGradientStyle = GradientStyles.Solid;
Last Updated: 19 Jun 2019 09:46 by ADMIN
Created by: Dimitri
Comments: 3
Category: GridView
Type: Bug Report

In my gridview need support of different heights of rows. I solved it with the autosize property.

But now I have a side action that the header row and filter row also react to the autosize property.

Attached you can see this behaviour...

Here my code:

Grid.MasterView.TableFilteringRow.MinHeight = 40
Grid.AutoSizeRows = True

Is there a chance to separate data rows from filter and header row?




Last Updated: 19 Jun 2019 05:34 by ADMIN

So, when I drop a RadStatusStrip on my radForm. In that object, I then add a RadWaitingBarElement. Then I change SPRING = TRUE and WAITINGSTYLE = "Dash", all in the properties window.  At design time, it looks good.  However, at run time, it reverts back to the default bar and just scrolls across the screen.  Did I find a bug? Do I need to change other properties of the RadWaitingBarElement?  Also, I noticed that when I change the WaitingIndicators in property page, those changes to take affect either. Very confusing and frustrating


 We are using Telerik version 2018.3.911.40

Last Updated: 17 Jun 2019 14:19 by ADMIN
Release R2 2019 SP1
Hello Telerik, 

your control changed the format to Verdana when import rtf. But only in the first line. And only the first line is Arial. Is the first line with any other font formated, its all ok.

Here the code:

string rtfText = @"{\rtf1\ansi\ansicpg1252\deff0\deflang1031{\fonttbl{\f0\fnil\fcharset0 Arial;}{\f1\fnil\fcharset0 Tahoma;}{\f2\fnil\fcharset0 Times New Roman;}{\f3\fnil\fcharset0 Arial Unicode MS;}{\f4\fnil\fcharset0 Calibri;}}
{\colortbl ;\red0\green0\blue0;}
\viewkind4\uc1\pard\tx300\tx600\tx900\tx1200\tx1500\tx1800\tx2100\tx2400\tx2700\tx3000\tx3300\tx3600\tx3900\tx4200\tx4500\cf1\b\fs32 Arial\f1\par
\f2 Times New Roman\par
\f0 Arial\f2\par
\f3 Arial Unicode MS\par
\f4 Calibri\b0\f0\fs20\par
RtfFormatProvider rtf = new RtfFormatProvider();
this.radRichTextEditor1.Document = rtf.Import(rtfText);

this.richTextBox1.Rtf = rtfText;

In the screenshot you can see, left the standard .net rtf control and rigth the Telerik richtexteditor. 
The zip is the sample project.
Last Updated: 17 Jun 2019 14:15 by ADMIN
Release R2 2019 SP1
The data validation rule should have values for formula1 and formula2 elements, which define the start and end values for a range to validate between. When such values are missing, a NullReferenceException is thrown on import and the document cannot be imported. As a workaround, the document can be modified by deleting the AlternateContent attribute.
Last Updated: 17 Jun 2019 14:10 by ADMIN
Release R2 2019 SP1
Created by: Karsten
Comments: 3
Category: GanttView
Type: Bug Report


why is the datatype of the ChildMember/ParentMember item limited to Int32? This is a problem when displaying tasks or events from tables with string or UUID idents. It would be a more flexible control if the type could be any type. Should not be a big deal to change this or is it?

Thank you und kind regards


Last Updated: 17 Jun 2019 13:32 by ADMIN
Release R2 2019 SP1
Created by: JeffSM
Comments: 3
Category: FileDialogs
Type: Bug Report


Since 1998 I design about 1000 ActiveX, FileDialogs were one of them.


Your is cool.

But my end-user complain that when they select details view, the column DateTime is not clickable to sort the files.


Please, fix it, or show me how to do.





Last Updated: 14 Jun 2019 06:47 by ADMIN

To reproduce:

- Open The popup

- Click on it, and then click on the form

- Repeat until the popup stays opened

Last Updated: 12 Jun 2019 13:58 by ADMIN

Please refer to the attached gif file.

Let's take for instance demo application with its default document, with text "RadRichTextEditor for WinForms" at the beginning in font Calibri of size 28. Suppose the user wants to add A, then empty line, then C in single line, followed by the rest of the document, and to have these three new lines in Times New Roman in size 10.

If there is no empty line, but letter B in middle line, then user can set caret to document start, set the font and size, and type A<Return>B<Return>C<Return>. And it would look fine (and even then, if we set caret just after B and press Return the new paragraph will have spacing after set to 7.5 for no apparent reason).

If we want an empty line instead of B in the line, then there is no simple way to do it. Typing A<Return><Return>C<Return> would produce a huge gap between A and C (we still first set the caret, and font and size). One way to accomplish what we want is to select all new text, set font size to something other than 10, and then back to 10 (which is also weird to have to do).

Last Updated: 12 Jun 2019 08:18 by ADMIN
Release R2 2019 SP1
To reproduce:
- Use the attached project.
- Resize the panel to the left.
- You will notice that the borders are cut off.

Second scenario: refer to the
RadCollapsiblePanel1.ExpandDirection = Telerik.WinControls.UI.RadDirection.Right
RadSplitContainer1.SplitPanels("SplitPanel2").SizeInfo.SizeMode = Telerik.WinControls.UI.Docking.SplitPanelSizeMode.Absolute
RadSplitContainer1.SplitPanels("SplitPanel2").SizeInfo.AbsoluteSize = New System.Drawing.Size(637, 522)

Workaround: manually update the collapsible panel`s size in the SplitterMoved event
public WorkCenterScheduleAndStatusControl()

    this.radSplitContainer1.SplitterMoved += RadSplitContainer1_SplitterMoved;

private void RadSplitContainer1_SplitterMoved(object sender, SplitterEventArgs e)
    this.radCollapsiblePanel1.Size = new Size(this.radCollapsiblePanel1.Size.Width, this.radCollapsiblePanel1.Size.Height - 1);
    this.radCollapsiblePanel1.Size = new Size(this.radCollapsiblePanel1.Width, this.radCollapsiblePanel1.Size.Height + 1);

Last Updated: 12 Jun 2019 08:17 by ADMIN
Release R2 2019 SP1
To reproduce:
- Add to collapsible panels to a form.
- Dock the first to the top and set the Dock property of the second to Fill.
- Set the ExpandDirection of the second to Up.
- Start the application and collapse and then expand the second panel.
- You will notice that the header button is no longer visible.

void radCollapsiblePanel1_Expanded(object sender, EventArgs e)
Under Review
Last Updated: 12 Jun 2019 06:15 by ADMIN
Created by: avani
Comments: 1
Category: TreeView
Type: Bug Report

Hi All,


I have made User control for custom node, in this user control i have used following controls

1 RadLabel (no of control - 3)

2 RadPanel (no of control -1)

3 PictureBox (no of Control - 4 )

4 TableLayoutPanel (no of control -3)

Means i have used total 11 controls within my user control.

Height of usercontrol = 146

Width of Usercontrol = 595


I have taken RadTreeView and above UserControl added as Node,following properties of treeview is set

this.radTreeView1.DataSource = Staff.GetStaff();
            this.radTreeView1.ParentMember = "ParentID";
            this.radTreeView1.ChildMember = "ID";
            this.radTreeView1.DisplayMember = "Department";
            this.radTreeView1.CreateNodeElement += this.OnCreateNodeElement;

this.radTreeView1.TreeViewElement.AutoSizeItems = true;
            this.radTreeView1.ShowRootLines = false;
            this.radTreeView1.FullRowSelect = false;
            this.radTreeView1.ShowLines = true;
            this.radTreeView1.LineStyle = TreeLineStyle.Solid;
            this.radTreeView1.LineColor = Color.FromArgb(110, 153, 210);
            this.radTreeView1.TreeIndent = 50;



But when i run the code it shows like this means my control is not displaying and the property "AutoSizeItems" is not working.


hope for quick reply