Unplanned
Last Updated: 26 Feb 2019 21:09 by Bryan Cho
Changing the DataSource or scrolling are slow.

Create a grid with more than 20 columns and add 5K rows for example. Maximize the form and try to scroll with mouse wheel. You will notice that the scrolling performance is worse compared to the normal state of the form with less visible visual elements.

Workaround: this.radGridView1.EnableFastScrolling = true; and use the scrollbar's thumb

Second workaround: use paging:  https://docs.telerik.com/devtools/winforms/gridview/paging/overview Thus, you will display as many rows as possible to display on the screen per page. Instead of scrolling, you will navigate through pages.
Unplanned
Last Updated: 12 Dec 2019 13:50 by ADMIN
RadRichTextEditor renders the text with a little bigger characters spacing than RadRichTextBox and MS Word.
Unplanned
Last Updated: 05 Oct 2018 12:54 by ADMIN
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 0
Category: GridView
Type: Bug Report
9
To reproduce:
1.Add a RadGridView with one column.
2.Select the form and in the Properties window, set the form's Localizable property to true.
3.Specify the column's HeaderText for the default language.
4.Set the form's Language property to French (France).
5.Specify the column's HeaderText for  French (France).
6.Set the CurrentUICulture before the InitializeComponent method to "fr-FR". If you run the application, the column is localized as expected.
7.If you get back to the designer and change the form's Language property back to Default you will notice that the column's HeaderText disappears.

Workaround: set the HeaderText programmatically according to the current language.
Unplanned
Last Updated: 29 Mar 2019 16:16 by ADMIN
When UseCompatibleTextRendering property is set to false, the data cells overlaps the row header cells when horizontal scrolling is performed.
Unplanned
Last Updated: 20 Feb 2018 13:17 by ADMIN
Controls in RadPanel redraw slowly when changing the Enabled state of the panel.

Workaround:

private void radButton1_Click(object sender, EventArgs e)
{
    if (this.radPanel1.Enabled)
    {
        this.radPanel1.Enabled = false;
    }
    else
    {
        this.radPanel1.Visible = false;
        this.radPanel1.Enabled = true;
        this.radPanel1.Visible = true;
    }
} 
 
Unplanned
Last Updated: 30 Mar 2016 07:52 by Jesse Dyck
The Property Builder of RadGridView makes unnecessary Designer modifications, causing checkouts in source controlled files. For example, if you have a gridViewCheckBoxColumn1 stored in the designer file, you open the Property Builder and close it (no matter if you make any changes or not), the gridViewCheckBoxColumn1 is removed in favour of gridViewCheckBoxColumn2 that is automatically created.
Unplanned
Last Updated: 05 Apr 2017 14:36 by ADMIN
How to reproduce:
1. Run the Mail Merge example (QSF) 

2. Select the image inside the document and move it to another position
Unplanned
Last Updated: 31 Aug 2017 08:09 by ADMIN
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 2
Category: Scheduler/Reminder
Type: Bug Report
7
Please refer to the attached sample project. When you start the application the form's text indicates how many times the AppointmentFormatting event is fired for only 30 appointments - more than 400 times. The more appointments you have , the more times the vent is initially fired,e.g. if you have 50 appointmens it is fired If you switch between the different views you will see how the counter increases its value.
Unplanned
Last Updated: 29 Mar 2016 13:19 by Jesse Dyck
1. Create a new Form that inherits from RadForm and add some rad controls.
2. Checkin the file in your source control system
3. Open the form in design time will cause checkout
Unplanned
Last Updated: 03 Feb 2017 15:51 by ADMIN
Setting the RightToLeftLayout to true together with RightToLeft = Yes, cuts off the form
Unplanned
Last Updated: 30 Mar 2016 13:55 by ADMIN
I have a somewhat complex datasource with nested classes and collections of classes (called ReportConfiguration in my attached sample). I've created a sample app that illustrates the error when I try to databind using telerik controls; I get a runtime error that it cannot find one of the nested classes. Using standard .NET controls (FormMS), I do not get this error.
Unplanned
Last Updated: 30 Mar 2016 13:49 by ADMIN
ADMIN
Created by: Nikolay
Comments: 0
Category: UI Framework
Type: Bug Report
6
If you dock a control in RadPanel, this control will cover the borders of RadPanel. This behavior is different from the behavior of the standard Panel behavior where the border is not covered, because of a Padding of 1.

We should consider whether this change should be introduced in our suite as this could modify the design of our customers' layouts in a way then don't want.

Workaround: this.radPanel1.Padding = new Padding(1);
Unplanned
Last Updated: 07 Apr 2016 14:14 by ADMIN
To reproduce:
- Create a RadForm with a public label in it. 
- Inherit the new form and change the label text.
- Open the second form at design time - the file status is changed to modified.
Unplanned
Last Updated: 19 Mar 2019 12:55 by ADMIN
To reproduce:

Add a RadSplitContainer with several SplitPanels and use the following code:
  this.radSplitContainer1.EnableCollapsing = true;
  this.radSplitContainer1.UseSplitterButtons = true;

If you run the project, you will notice that the next/previous buttons are displayed for manipulating the SplitPanel's collapsed/expanded state. If you click one of the next/previous buttons, the relevant SplitPanel will be collapsed and the splitter will remain visible. Thus, the user has the possibility to return the previous state of the SplitPanel. However, if you try to collapse the SplitPanel programmatically by setting the Collapsed property to true, the corresponding splitter will disapper.
Unplanned
Last Updated: 30 Mar 2016 14:41 by ADMIN
Unplanned
Last Updated: 23 Aug 2016 08:31 by ADMIN
Please refer to the attached gif file.

Workaround: close manually the drop down list when the auto-complete popup is shown:

    this.radDropDownList1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
    this.radDropDownList1.DropDownListElement.AutoCompleteSuggest.DropDownList.PopupOpened+=DropDownList_PopupOpened;

private void DropDownList_PopupOpened(object sender, EventArgs e)
{
    this.radDropDownList1.CloseDropDown();
}
Unplanned
Last Updated: 07 Apr 2017 10:12 by ADMIN
How to reproduce:
public partial class Form1 : Form
    {
        private RangeSelectorViewElement chartElement;

        public Form1()
        {
            InitializeComponent();

            new RadControlSpyForm().Show();

            this.SetupChart();

            this.radRangeSelector1.AssociatedControl = this.radChartView1;
            this.chartElement = this.radRangeSelector1.RangeSelectorElement.AssociatedElement as RangeSelectorViewElement;
            this.chartElement.SeriesInitializing += new SeriesInitializingEventHandler(chartElement_SeriesInitializing);
        }

        private void chartElement_SeriesInitializing(object sender, SeriesInitializingEventArgs e)
        {
            e.SeriesType = typeof(LineSeries);
        }

        private void SetupChart()
        {
            LineSeries lineSeries = new LineSeries();
            lineSeries.DataPoints.Add(new CategoricalDataPoint(20, "Jan"));
            lineSeries.DataPoints.Add(new CategoricalDataPoint(22, "Apr"));
            lineSeries.DataPoints.Add(new CategoricalDataPoint(12, "Jul"));
            lineSeries.DataPoints.Add(new CategoricalDataPoint(19, "Oct"));
            this.radChartView1.Series.Add(lineSeries);

            LineSeries lineSeries2 = new LineSeries();
            lineSeries2.DataPoints.Add(new CategoricalDataPoint(3, "Jan"));
            lineSeries2.DataPoints.Add(new CategoricalDataPoint(1, "Apr"));
            lineSeries2.DataPoints.Add(new CategoricalDataPoint(5, "Jul"));
            lineSeries2.DataPoints.Add(new CategoricalDataPoint(2, "Oct"));
            this.radChartView1.Series.Add(lineSeries2);
        }

        private void radButton1_Click(object sender, EventArgs e)
        {
            this.radRangeSelector1.Height = 100;
            //this.ScaleVerticallyChart(this.chartElement.View, .55);
        }
}

Workaround: zoom out along the Y axis the hosted chart element and pan the view so that all series are visible
private void radButton1_Click(object sender, EventArgs e)
        {
            this.radRangeSelector1.Height = 100;
            this.ScaleVerticallyChart(this.chartElement.View, this.radRangeSelector1.Height / (float)150);
        }

        private void ScaleVerticallyChart(ChartView view, double verticalScaleFactor)
        {
            FieldInfo fiPan = view.GetType().GetField("pan", BindingFlags.NonPublic | BindingFlags.Instance);
            RadPoint pan = (RadPoint)fiPan.GetValue(view);
            FieldInfo fiZoom = view.GetType().GetField("zoom", BindingFlags.NonPublic | BindingFlags.Instance);
            RadSize zoom = (RadSize)fiZoom.GetValue(view);

            double verticalPan = pan.Y * verticalScaleFactor / zoom.Height;
            CartesianArea area = view.GetArea<CartesianArea>();
            if (area != null)
            {
                MethodInfo mi = area.GetType().GetMethod("GetCartesianClipRect", BindingFlags.NonPublic | BindingFlags.Instance);
                RectangleF rect = (RectangleF)mi.Invoke(area, new object[] { });
                SizeF areaSize = rect.Size;
                verticalPan += areaSize.Height - (areaSize.Height * verticalScaleFactor + verticalPan);
            }

            zoom = new RadSize(1, verticalScaleFactor);
            fiZoom.SetValue(view, zoom);
            view.Layout();
        }
Unplanned
Last Updated: 29 Mar 2016 10:10 by ADMIN
ADMIN
Created by: Peter
Comments: 0
Category: Installer and VS Extensions
Type: Bug Report
5
After update the Copy Local is set to False
Unplanned
Last Updated: 30 Mar 2016 13:49 by ADMIN
Happens with Win8 and VS2012 themes, but not with the Office themes only with form's top left and right corners. If the mouse is moved into the corner from the center of the form. From this cursor position, the form cannot be resized.  From this position, once a resize is attempted, repositioning the mouse and retrying the resize may not work at all.
Unplanned
Last Updated: 29 Mar 2016 12:53 by ADMIN
On Windwos XP , Windows Vista, Windows 7 the RadForm/ShapedForm hides the taskbar when it is set to Auto-Hide. When you try to show the taskbar it appears behind (under) the RadForm instead of infront (over) it.
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