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Telerik Scheduler RadSchedulerRecurrenceEditor.RecurrenceRule.MaximumCandidates does not work : Possible bug since 2010

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Scheduler

This is a migrated thread and some comments may be shown as answers.

Matt asked on 27 Mar 2017, 09:12 AM

20170327-rad-recurrence-issue.png

My project still uses Telerik v2011.1.413.35 and came across an issue with the recurrence editor. Here are the settings:

Recurrence: Hourly
Recur every: 1 hr
Repeat end: End By
End by: 10/3/2018

The above setting when configured in UI or preset at Page_Load always generates and stops at only 3000 occurrences. I tried setting/overriding RadSchedulerRecurrenceEditor.RecurrenceRule.MaximumCandidates and RadSchedulerRecurrenceEditor.RecurrenceRule.Range.MaxOccurrences during Page_Load or on click/submit of form, before accessing Occurrences property, as suggested in these forum topics: Link 1, Link 2. That does not work.

So, I went ahead and installed the latest Telerik UI for ASP.NET AJAX, and tried the same experiement a fresh, simple page that only has the recurrence editor, and still does not work. Below is the code snippet, both ASPX and VB page.

01.<%@ Page Language="VB" AutoEventWireup="false" CodeFile="RecurrenceEditor.aspx.vb" Inherits="RecurrenceEditor" %>

02.

03.<!DOCTYPE html>

04.

05.<html xmlns="http://www.w3.org/1999/xhtml">

06.<head runat="server">

07. <title></title>

08. <telerik:RadStyleSheetManager id="RadStyleSheetManager1" runat="server" />

09.</head>

10.<body>

11. <form id="form1" runat="server">

12. <telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>

13. <asp:Panel ID="pnlRadRecurrenceEditorTest" runat="server" CssClass="ssection" Width="600">

14. <telerik:RadSchedulerRecurrenceEditor ID="radRecurEditor" runat="server"></telerik:RadSchedulerRecurrenceEditor>

15. <asp:Button ID="btnRadRecurrenceEditorSubmit" runat="server" Text="Schedule Submit" /><br />

16. <asp:Label ID="lblRadRecurrenceEditorDetails" runat="server"></asp:Label>

17. </asp:Panel>

18. </form>

19.</body>

20.</html>

01.Imports Telerik.Web.UI

02.

03.Partial Class RecurrenceEditor

04. Inherits System.Web.UI.Page

05.

06. Protected Sub Page_Load_Recurrence(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load

07. lblRadRecurrenceEditorDetails.Text = String.Empty

08. If IsPostBack Then Exit Sub

09. 'NOTE: With or without the below code commented, I cannot get occcurrences > 3000 in count

10. Dim endDate As New Date(2018, 10, 4)

11. radRecurEditor.StartDate = Now()

12. radRecurEditor.EndDate = endDate

13. radRecurEditor.RecurrenceRule = New HourlyRecurrenceRule(1, New RecurrenceRange(Now(), TimeSpan.Zero, endDate, 0))

14. radRecurEditor.RecurrenceRule.Range.MaxOccurrences = 10002

15. radRecurEditor.RecurrenceRule.MaximumCandidates = 10001

16. lblRadRecurrenceEditorDetails.Text += "<br>Max occurrences: " & radRecurEditor.RecurrenceRule.Range.MaxOccurrences.ToString()

17. lblRadRecurrenceEditorDetails.Text += "<br>Max candidates: " & radRecurEditor.RecurrenceRule.MaximumCandidates.ToString()

18. End Sub

19. Protected Sub btnRadRecurrenceEditorSubmit_Click(sender As Object, e As EventArgs) Handles btnRadRecurrenceEditorSubmit.Click

20. Dim output As New List(Of String)

21. output.Add("Max candidates: " & radRecurEditor.RecurrenceRule.MaximumCandidates.ToString())

22. radRecurEditor.RecurrenceRule.MaximumCandidates = 10000 'doesn't work

23. output.Add("Max candidates changed to: " & radRecurEditor.RecurrenceRule.MaximumCandidates)

24. output.Add("Max occurrences: " & radRecurEditor.RecurrenceRule.Range.MaxOccurrences.ToString())

25. output.Add("ToList count: " & radRecurEditor.RecurrenceRule.Occurrences.ToList().Count)

26. output.Add("Total count: " & radRecurEditor.RecurrenceRule.Occurrences.Count)

27. output.Add("Last recurring date: " & radRecurEditor.RecurrenceRule.Occurrences.LastOrDefault())

28. lblRadRecurrenceEditorDetails.Text = String.Join("<br>", output)

29. End Sub

30.

31.End Class

I have also attached the resultant page view.

Let me know what I'm doing wrong here, or if this is an actual bug in the tool.

Thanks.

3 Answers, 1 is accepted

answered on 28 Mar 2017, 05:53 PM

The issue is really really odd. I think this is a bug, but I'm open to explanation of such implementation. Following explains the issue.

If I try to set `MaximumCandidates` by directly referencing the rad schedule recurrence editor, it does not work. BUT, if I assign `RecurrenceRule` property of the editor to a variable, and then set the max property, it works. Following is the code snippet explaining it.

1.radRecurEditor.RecurrenceRule.MaximumCandidates = Integer.MaxValue 'does not work!

2.radRecurrenceRule.MaximumCandidates = Integer.MaxValue 'works!!

Oh well!

answered on 28 Mar 2017, 05:58 PM

Just to clarify, here is the complete code-behind snippet, in reference to the original issue post.

01.Protected Sub Page_Load_Recurrence(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load

02. lblRadRecurrenceEditorDetails.Text = String.Empty

03. If IsPostBack Then Exit Sub

04.End Sub

05.Protected Sub btnRadRecurrenceEditorSubmit_Click(sender As Object, e As EventArgs) Handles btnRadRecurrenceEditorSubmit.Click

06. RecurrenceTestOutput(radRecurEditor.RecurrenceRule)

07.End Sub

08.

09.Protected Sub RecurrenceTestOutput(radRecurrenceRule As RecurrenceRule)

10. Dim output As New List(Of String)

11. output.Add("Max candidates: " & radRecurrenceRule.MaximumCandidates.ToString())

12. radRecurEditor.RecurrenceRule.MaximumCandidates = Integer.MaxValue 'does not work!

13. radRecurrenceRule.MaximumCandidates = Integer.MaxValue 'works!!

14. output.Add("Max candidates changed to: " & radRecurrenceRule.MaximumCandidates)

15. output.Add("Max occurrences: " & radRecurrenceRule.Range.MaxOccurrences.ToString())

16. output.Add("ToList count: " & radRecurrenceRule.Occurrences.ToList().Count)

17. output.Add("Total count: " & radRecurrenceRule.Occurrences.Count)

18. output.Add("Last recurring date: " & radRecurrenceRule.Occurrences.LastOrDefault())

19. lblRadRecurrenceEditorDetails.Text += String.Join("<br>", output)

20.End Sub

answered on 30 Mar 2017, 08:45 AM

Hello Matt,

The RecurrenceEditor RecurrenceRule is designed to get only the Recurrence rule text, which does not contain the number of max candidates. That is why the first approach is not changing the MaximumCandidates property.

In such scenarios, where the recurrence rule needs to be modified, we recommend the approach that you have used in your next reply, assigning the rule to a variable and modify and use the variable.

Regards,
Peter Milchev
Telerik by Progress

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