Completed
Last Updated: 20 Aug 2019 13:20 by ADMIN
Release R3 2019

By default, if you need to format the cells in RadCalendar, the ElementRender event is an appropriate solution. However, it doesn't process the row/column header cell elements illustrated in the attached screenshot.

Workaround:

            MonthViewElement mve = (MonthViewElement)this.radCalendar1.CalendarElement.CalendarVisualElement;
            foreach (CalendarCellElement cell in mve.TableElement.Children)
            {
                if (cell.Row == 0)
                {
                    cell.DrawFill = true;
                    cell.BackColor = Color.Red;
                } 
            } 

Completed
Last Updated: 05 Jun 2018 08:20 by Dimitar
How to reproduce:
public partial class RadForm1 : Telerik.WinControls.UI.RadForm
{
    public RadForm1()
    {
        InitializeComponent();


        ThemeResolutionService.ApplicationThemeName = "VisualStudio2012Light";

        this.radCalendar1.ShowRowHeaders = true;
        this.radCalendar1.AllowMultipleView = true;
        this.radCalendar1.MultiViewRows = 2;
        this.radCalendar1.MultiViewColumns = 2;
        this.radCalendar1.ShowFooter = true;
        this.radCalendar1.ShowOtherMonthsDays = false;
    }
}

Workaround: 
protected override void OnLoad(EventArgs e)
{
    base.OnLoad(e);

    MultiMonthViewElement viewElement = this.radCalendar1.CalendarElement.CalendarVisualElement as MultiMonthViewElement;
    CalendarMultiMonthViewTableElement tableElement = viewElement.FindDescendant<CalendarMultiMonthViewTableElement>() as CalendarMultiMonthViewTableElement;
    if (tableElement == null)
    {
        return;
    }

    foreach (RadElement child in tableElement.Children)
    {
        MonthViewElement monthViewElement = child as MonthViewElement;
        if (monthViewElement == null)
        {
            continue;
        }


        monthViewElement.FindDescendant<CalendarCellElement>().DrawBorder = false;
    }
}
Completed
Last Updated: 02 Apr 2018 07:55 by Dimitar
Workaround:
public partial class RadForm1 : Telerik.WinControls.UI.RadForm
{
    public RadForm1()
    {
        InitializeComponent();

        this.radDateTimePicker1.DateTimePickerElement.Calendar.ElementRender += Calendar_ElementRender;
    }

    private void Calendar_ElementRender(object sender, RenderElementEventArgs e)
    {
        if (this.radDateTimePicker1.DateTimePickerElement.Calendar.ZoomLevel == ZoomLevel.Days)
        {
            return;
        }

        CalendarCellElement element = e.Element as CalendarCellElement;
        if (element != null)
        {
            element.WeekEnd = false;
        }
    }
}
Completed
Last Updated: 15 Aug 2017 11:03 by ADMIN
To reproduce: use the following code snippet:

            radCalendar1.AllowMultipleSelect = true;
            radCalendar1.ShowRowHeaders = true;
            radCalendar1.AllowRowHeaderSelectors = true;
 If you select several cells, they all are selected. Then, click the header row cell. You will notice that the cells from this row are selected but all previously selected cells are cleared. The attached gif file illustrates the behavior. 

Workaround: use the MouseDown event to store the currently selected cells and then on MouseUp restore the missing selection:

public class MyCalendar : RadCalendar
{
    List<DateTime> selectedDays = new List<DateTime>();

    protected override void OnMouseDown(MouseEventArgs e)
    {
        CalendarCellElement cell = this.ElementTree.GetElementAtPoint(e.Location) as CalendarCellElement;
        if (cell != null)
        {
            bool isHeader = (bool)cell.GetValue(CalendarCellElement.IsHeaderCellProperty);
            if (isHeader)
            {
                selectedDays.Clear();
                foreach (DateTime date in this.SelectedDates)
                {
                    selectedDays.Add(date);
                }
            }
        }
        base.OnMouseDown(e);
    }

    protected override void OnMouseUp(MouseEventArgs e)
    {
        base.OnMouseUp(e);
        foreach (DateTime date in selectedDays)
        {
            if (!this.SelectedDates.Contains(date))
            {
                this.SelectedDates.Add(date);
            }
        }
    }

    public override string ThemeClassName  
    { 
        get 
        { 
            return typeof(RadCalendar).FullName;  
        }
    }
}
Approved
Last Updated: 29 Mar 2016 10:30 by ADMIN
To reproduce:
public Form1()
{
    InitializeComponent();
    this.radCalendar1.RangeMinDate = new DateTime(2014, 1, 1);
    this.radCalendar1.RangeMaxDate = new DateTime(2017, 7, 17);
    this.radCalendar1.FocusedDate = new DateTime(2014, 2, 4);
    this.radCalendar1.AllowFastNavigation = true;
    this.radCalendar1.FastNavigationStep = 1; 
    this.radCalendar1.AllowMultipleView = true;
    this.radCalendar1.MultiViewColumns = 4;
    this.radCalendar1.MultiViewRows = 3;
    this.radCalendar1.CurrentViewRow = 0;  
    this.radCalendar1.CurrentViewColumn = 1;  
}

The user expects when fast navigating forward, the view to be shifted with one year = 12 months. However, each next forward fast navigation moves with 11 months. 

Workaround: 

            this.radCalendar1.CurrentViewRow = 0;  
            this.radCalendar1.CurrentViewColumn = 0;
            this.radCalendar1.CalendarElement.PreviousButton.PerformClick();
Approved
Last Updated: 29 Mar 2016 10:29 by ADMIN
The following line does not move MultiMonthView to the specific date:  

radCalendar1.CalendarElement.View.ViewStartDate = new DateTime(DateTime.Now.Year, 1, 1);


Workaround: use RadCalendar's FocusedDate property instead:

radCalendar1.FocusedDate = new DateTime(2014, 1, 1);
Approved
Last Updated: 29 Mar 2016 10:28 by ADMIN
To reproduce: 

1. When set the Disabled to true  of special day has not effect
this.radCalendar1.SpecialDays.Add(new RadCalendarDay(new DateTime(2014,7, 15)));
this.radCalendar1.SpecialDays[0].Disabled = true;

2. When set the Selected and Selectable to false, the special day is still can select and highlight
this.radCalendar1.SpecialDays[0].Selected = false;
this.radCalendar1.SpecialDays[0].Selectable = false;
Approved
Last Updated: 29 Mar 2016 10:27 by ADMIN
Meanwhile, you can workaround this by resetting the property every time you change the number of months that RadCalendar displays. This is shown in the next code snippet:

private void radPageViewPage2_ClientSizeChanged(object sender, EventArgs e)
{
    int numViews = this.radPageViewPage2.Size.Height / 240 + 1;
    radCalendar1.MultiViewRows = numViews;
    radCalendar1.ShowFastNavigationButtons = true;
    radCalendar1.ShowFastNavigationButtons = false;
}
Approved
Last Updated: 29 Mar 2016 10:24 by ADMIN
When a RadRichTextBox control is added as a child to RadCalendar, the Space and Enter key input is stolen by the calendar.

Workaround is available here: http://www.telerik.com/community/forums/getting-visible-dates-from-radcalendar
Completed
Last Updated: 25 May 2015 15:05 by ADMIN
Use the following code snippet:

private void radCalendar1_ViewChanged(object sender, EventArgs e)
{
    this.radCalendar1.SpecialDays.Clear();

    RadCalendarDay day = new RadCalendarDay(new DateTime(2014,04,15));
    radCalendar1.SpecialDays.Add(day);
    PictureBox pictureBox = new PictureBox();
    pictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
    pictureBox.Image = Properties.Resources.home;
    RadHostItem hostItem = new RadHostItem(pictureBox);
    day.TemplateItem = hostItem;
}

Clicking the navigation buttons does not navigate you to the respective month.

Workaround: assign the RadCalendarDay.TemplateItem before adding the day in the SpecialDays collection:
private void radCalendar1_ViewChanged(object sender, EventArgs e)
{
    this.radCalendar1.SpecialDays.Clear();

    RadCalendarDay day = new RadCalendarDay(new DateTime(2014,04,15));
    PictureBox pictureBox = new PictureBox();
    pictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
    pictureBox.Image = Properties.Resources.home;
    RadHostItem hostItem = new RadHostItem(pictureBox);
    day.TemplateItem = hostItem; 
    radCalendar1.SpecialDays.Add(day);
}

Note: if the initial code is used in the ViewChanging event, clicking the navigation buttons leads to freezing the application.
Completed
Last Updated: 21 May 2015 13:36 by ADMIN
To reproduce: use the following code snippet:

public Form1()
{
    InitializeComponent();

    this.radCalendar1.AllowMultipleView = true;
    this.radCalendar1.MultiViewRows = 3;
    this.radCalendar1.MultiViewColumns = 4;
    this.radCalendar1.AllowMultipleSelect = true;
    this.radCalendar1.ShowRowHeaders = true;
    this.radCalendar1.ShowColumnHeaders = true;
    this.radCalendar1.AllowColumnHeaderSelectors = true;
    this.radCalendar1.AllowRowHeaderSelectors = true;
    this.radCalendar1.ShowViewSelector = true;
    this.radCalendar1.AllowViewSelector = true;

  
    this.radCalendar1.RangeMinDate = new DateTime(2014, 3, 3);
    this.radCalendar1.RangeMaxDate = new DateTime(2014, 7, 27);
    this.radCalendar1.FocusedDate = new DateTime(2014, 5, 5);
}

Please refer to the attached gif file.

Workaround: 
private void Calendar_MouseDown(object sender, MouseEventArgs e)
{
    CalendarCellElement cell = this.radCalendar1.CalendarElement.ElementTree.GetElementAtPoint(e.Location) as CalendarCellElement;
    if (cell != null && cell.Date < this.radCalendar1.RangeMinDate && (bool)cell.GetValue(CalendarCellElement.IsHeaderCellProperty) == true)
    {
        foreach (MonthViewElement monthView in this.radCalendar1.CalendarElement.CalendarVisualElement.Children[0].Children.Last().Children)
        {
            {
                foreach (CalendarCellElement monthCell in monthView.TableElement.Children)
                {
                    if (monthCell.Date.Month == cell.Date.Month && monthCell.Date.Year == cell.Date.Year &&
                        this.radCalendar1.RangeMinDate <= monthCell.Date)// &&
                       // (bool)cell.GetValue(CalendarCellElement.IsHeaderCellProperty) == false)
                    {
                        if (char.IsLetter(cell.Text[0]))
                        {
                            //perform column selection
                            if (monthCell.ControlBoundingRectangle.X == cell.ControlBoundingRectangle.X)
                            {
                                this.radCalendar1.SelectedDates.Add(monthCell.Date);
                            }
                        }
                        else
                        {
                            //perform row selection
                            if (monthCell.ControlBoundingRectangle.Y == cell.ControlBoundingRectangle.Y)
                            {
                                this.radCalendar1.SelectedDates.Add(monthCell.Date);
                            }
                        }
                    }
                }
            }
        }
    }
}
Completed
Last Updated: 20 Oct 2014 14:26 by ADMIN
To reproduce: 
1. Drag and drop RadCalendar to form
2. Set design time the AllowMultipleView property to true
3. Set design time value of the MultiViewRows and MultiViewColumns properties to 2
4. When save the form or run the project an exception is thrown. 

Workaround: 
Set the AllowMultipleView and MultiViewColumns properties with code.
Completed
Last Updated: 14 Jul 2014 07:50 by ADMIN
To reproduce: use the following code snippet:

public Form1()
{
    InitializeComponent();
    this.radCalendar1.AllowMultipleView = true;
    this.radCalendar1.MultiViewRows = 3;
    this.radCalendar1.HeaderNavigationMode = Telerik.WinControls.UI.HeaderNavigationMode.Zoom;
}
Completed
Last Updated: 14 Jul 2014 07:49 by ADMIN
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 1
Category: Calendar
Type: Bug Report
0
FIX. RadCalendar - Incorrect week numbering

Use the following code snippet:

radCalendar1.AllowMultipleView = true;
radCalendar1.MultiViewColumns = 1;
radCalendar1.MultiViewRows = 5;
radCalendar1.ShowRowHeaders = true;

CultureInfo ci = new CultureInfo("en-US");
CalendarWeekRule weekRule = CalendarWeekRule.FirstDay;
ci.DateTimeFormat.CalendarWeekRule = weekRule;
radCalendar1.Culture = ci;

Expected behavior: when the CalendarWeekRule is FirstDay, 01/01/2013 should be displayed as week 1
Declined
Last Updated: 06 Jun 2014 07:50 by ADMIN
ADMIN
Created by: Nikolay
Comments: 0
Category: Calendar
Type: Bug Report
0
RadCalendar should support month selection. I.e, the end-user should be able to press a single button, and all the cells from the current month should become selected.

Resolution: 

#1 This behavior could be achieved very easy with current API, so we are thinking  that there is no need to implement it in our RadCalendar as embedded functionality. 

For example: 

C#

            this.radCalendar1.AllowMultipleSelect = true;
            for (int i = 1; i <= DateTime.DaysInMonth(DateTime.Now.Year,DateTime.Now.Month); i++)
            {
                this.radCalendar1.SelectedDates.Add(new DateTime(DateTime.Now.Year, DateTime.Now.Month, i));
            }
VB

Me.radCalendar1.AllowMultipleSelect = True
For i As Integer = 1 To DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month)
Me.radCalendar1.SelectedDates.Add(New DateTime(DateTime.Now.Year, DateTime.Now.Month, i))
Next

#2 You can set ShowOtherMonthsDays to false and use ViewSelector. 

For example: 

C# 
this.radCalendar1.AllowMultipleSelect = true;
this.radCalendar1.AllowViewSelector = true;
this.radCalendar1.ShowViewSelector = true;
this.radCalendar1.ShowOtherMonthsDays = false;
VB
Me.radCalendar1.AllowMultipleSelect = True
Me.radCalendar1.AllowViewSelector = True
Me.radCalendar1.ShowViewSelector = True
Me.radCalendar1.ShowOtherMonthsDays = False
Completed
Last Updated: 06 Jun 2014 06:46 by ADMIN
The event should fire so one can customize the appearance on loading.
Completed
Last Updated: 05 Jun 2014 07:08 by ADMIN
ADMIN
Created by: Nikolay
Comments: 0
Category: Calendar
Type: Bug Report
1
Although RadCalendarDay has a Tooltip property, it does not show any tooltips.
Completed
Last Updated: 23 Apr 2014 12:56 by ADMIN
ADMIN
Created by: Martin Vasilev
Comments: 0
Category: Calendar
Type: Bug Report
0
Set the RadCalendar's NavigationNextImage and NavigationPrevImage properties in design time through property grid. The assigned images is shown in the designer. When run the application the images do not be shown.
Completed
Last Updated: 23 Aug 2012 05:41 by ADMIN
To reproduce: select 01/01/0001 and click the previous button
Completed
Last Updated: 14 Dec 2011 11:08 by ADMIN
The border of the special days in RadCalendar does not change on mouse leave.
1 2