Could not find ResourceType selected for grouping

[codispdp]

I am building a Team Outlook Calendar from our AD/Exchange binding the scheduler control to a DataTable from codebehind. My ResourceType is bound to an XmlDataSource with the values of the team members. I am receiving and error on the Schedule.DataBind();

Could not find ResourceType selected for grouping. Please, check that the GroupBy attribute is properly set and a ResourceType with the same name exists.

Can someone help, here is the code:

	<form id="Form1" method="post" runat="server">
	<ajax:ScriptManager ID="ScriptManager" runat="server" />
	<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
	<AjaxSettings>
	<telerik:AjaxSetting AjaxControlID="RadScheduler1">
	<UpdatedControls>
	<telerik:AjaxUpdatedControl ControlID="RadScheduler1" LoadingPanelID="RadAjaxLoadingPanel1" />
	</UpdatedControls>
	</telerik:AjaxSetting>
	</AjaxSettings>
	</telerik:RadAjaxManager>
	<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Transparency="30" BackColor="#E0E0E0" InitialDelayTime="500">
	<asp:Image ID="Image1" Style="margin-top: 200px" runat="server" ImageUrl="~/controls/Radcontrols/Ajax/Skins/Default/loading.gif"
	BorderWidth="0px" AlternateText="Loading"></asp:Image>
	</telerik:RadAjaxLoadingPanel>
	<div class="RadScheduler_Mac" style="background: transparent; width: 750px;">
	<div class="headerTop">
	Open System Team Calendar
	</div>
	</div>
	<telerik:RadScheduler
	runat="server"
	ID="RadScheduler1"
	Width="750px"
	Skin="Mac"
	SelectedView="ResourceView"
	GroupBy="Members"
	DayStartTime="07:00:00"
	DayEndTime="18:00:00"
	TimeZoneOffset="-05:00:00"
	DataKeyField="NameID"
	DataSubjectField="Subject"
	DataStartField="StartTime"
	DataEndField="EndTime"
	DataRecurrenceField="RecurrenceRule"
	DataRecurrenceParentKeyField="RecurrenceParentID">
	<ResourceTypes>
	<telerik:ResourceType
	KeyField="NameID"
	Name="Members"
	TextField="NameDesc"
	ForeignKeyField="NameID"
	DataSourceID="XmlDsResources" />
	</ResourceTypes>
	</telerik:RadScheduler>
	<asp:XmlDataSource id="XmlDsResources" DataFile="~/os/TeamCalendarResources.xml" runat="server"/>
	</form>

	Imports System.Net
	Imports System.IO
	Imports System.XML
	Imports System.Data
	Imports System.Configuration
	Imports System.Security.Cryptography.X509Certificates
	Imports System.DirectoryServices
	Partial Class os_TeamCalendar
	Inherits System.Web.UI.Page
	Const errorLevel As Integer = 2  ' 2 = verbose, 1 = concise
	Protected Sub Page_Load1(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
	' sharing calendar must be set to reviewer http://office.microsoft.com/en-us/outlook/HP011111491033.aspx
	If (Not IsPostBack) Then
	RadScheduler1.SelectedDate = Today
	Dim dt As New DataTable()
	dt.Columns.Add("StartTime", System.Type.GetType("System.DateTime"))
	dt.Columns.Add("EndTime", System.Type.GetType("System.DateTime"))
	dt.Columns.Add("NameID", System.Type.GetType("System.String"))
	dt.Columns.Add("Name", System.Type.GetType("System.String"))
	dt.Columns.Add("Location", System.Type.GetType("System.String"))
	dt.Columns.Add("Subject", System.Type.GetType("System.String"))
	dt.Columns.Add("Status", System.Type.GetType("System.String"))
	dt.Columns.Add("Type", System.Type.GetType("System.String"))
	dt.Columns.Add("RecurrenceRule", System.Type.GetType("System.String"))
	dt.Columns.Add("RecurrenceParentID", System.Type.GetType("System.Int32"))
	Dim strUsers As String = System.Configuration.ConfigurationManager.AppSettings("Usernames")
	Dim arrUsers() As String = strUsers.Split(",")
	Dim strUser As String
	For Each strUser In arrUsers
	LookUpCalendar(strUser, RadScheduler1.SelectedDate, dt)
	Next
	RadScheduler1.DataSource = dt
	RadScheduler1.DataBind()
	Else
	End If
	End Sub
	Sub LookUpCalendar(ByVal Name As String, ByVal dDate As DateTime, ByRef dt As DataTable)
	Dim strURL As String = "http://" & System.Configuration.ConfigurationManager.AppSettings("EMailServer") & "/exchange/" & Name & "/calendar/"
	Dim strRequest As String = "<?xml version=""1.0""?>" & _
	"<g:searchrequest xmlns:g=""DAV:"">" & _
	"<g:sql>SELECT ""urn:schemas:calendar:location"", ""urn:schemas:httpmail:subject"", " & _
	"""urn:schemas:calendar:dtstart"", ""urn:schemas:calendar:dtend"", " & _
	"""urn:schemas:calendar:busystatus"", ""urn:schemas:calendar:instancetype"" " & _
	"FROM Scope('SHALLOW TRAVERSAL OF """ & strURL & """') " & _
	"WHERE NOT ""urn:schemas:calendar:instancetype"" = 1 " & _
	"AND ""DAV:contentclass"" = 'urn:content-classes:appointment' " & _
	"AND ""urn:schemas:calendar:dtstart"" > '" & _
	String.Format("{0:yyyy/MM/dd}", dDate) & " 00:00:00' " & _
	"AND ""urn:schemas:calendar:dtend"" &lt; '" & _
	String.Format("{0:yyyy/MM/dd}", dDate.AddDays(1)) & " 00:00:00' " & _
	"ORDER BY ""urn:schemas:calendar:dtstart"" ASC" & _
	"</g:sql></g:searchrequest>"
	'0 = "  Instance type: 0-Single appointment<br>"
	'1 = "  Instance type: 1-Master recurring appointment<br>"
	'2 = "  Instance type: 2-Single instance, recurring appointment<br>"
	'3 = "  Instance type: 3-Exception to a recurring appointment<br>"
	Dim strStatusText As String = ""
	Dim Status As Integer
	Dim ResponseXmlDoc As XmlDocument = SendRequest("SEARCH", strURL, strRequest, strStatusText, Status)
	AddToSchedule(ResponseXmlDoc, Name, dt)
	'Display the results.
	If (Status >= 200 And Status < 300) Then
	'AddInfo("<br>" & Name & "   " & "Result = " & Status & ": " & strStatusText, 2)
	ElseIf Status = 401 Then
	'AddInfo("<br><font color='red'>Permission denied!</font>", 1)
	'AddInfo("<br><font color='red'>Check your permissions for this item.</font>", 2)
	Else
	'AddInfo("<br><font color='red'>Request failed.</font>", 1)
	'AddInfo("<br><font color='red'>Result = " & Status & ": " & strStatusText & "</font>", 2)
	End If
	End Sub
	Sub AddToSchedule(ByVal ResponseXmlDoc As System.Xml.XmlDocument, ByVal Name As String, ByRef dt As DataTable)
	' Build a list of the DAV:href XML nodes, corresponding to the folders
	' in the mailbox.  The DAV: namespace is typically assigned the a: prefix in the XML response body.
	If (ResponseXmlDoc Is Nothing) Then Return
	Dim HrefNodes As System.Xml.XmlNodeList = ResponseXmlDoc.GetElementsByTagName("a:href")
	' Build a list of the urn:schemas:httpmail:subject XML nodes,
	' The urn:schemas:httpmail: namespace is typically assigned the e: prefix in the XML response body.
	Dim SubjectNodeList As System.Xml.XmlNodeList = ResponseXmlDoc.GetElementsByTagName("e:subject")
	' Build a list of the urn:schemas:calendar:location XML nodes,
	' The urn:schemas:calendar: namespace is typically assigned the d: prefix in the XML response body.
	Dim LocationNodeList As System.Xml.XmlNodeList = ResponseXmlDoc.GetElementsByTagName("d:location")
	' Build a list of the urn:schemas:calendar:dtstart XML nodes,
	Dim StartTimeNodeList As System.Xml.XmlNodeList = ResponseXmlDoc.GetElementsByTagName("d:dtstart")
	' Build a list of the urn:schemas:calendar:dtend XML nodes,
	Dim EndTimeNodeList As System.Xml.XmlNodeList = ResponseXmlDoc.GetElementsByTagName("d:dtend")
	' Build a list of the urn:schemas:calendar:busystatus XML nodes,
	Dim BusyStatusNodeList As System.Xml.XmlNodeList = ResponseXmlDoc.GetElementsByTagName("d:busystatus")
	' Build a list of the urn:schemas:calendar:instancetype XML nodes,
	Dim InstanceTypeNodeList As System.Xml.XmlNodeList = ResponseXmlDoc.GetElementsByTagName("d:instancetype")
	' Loop through the returned items (if any).
	If SubjectNodeList.Count > 0 Then
	Dim i As Integer
	For i = 0 To SubjectNodeList.Count - 1
	Dim dr As DataRow = dt.NewRow()
	dr("Subject") = SubjectNodeList(i).InnerText
	dr("Location") = LocationNodeList(i).InnerText
	dr("StartTime") = DateTime.Parse(StartTimeNodeList(i).InnerText)
	dr("EndTime") = DateTime.Parse(EndTimeNodeList(i).InnerText)
	dr("Status") = BusyStatusNodeList(i).InnerText
	dr("NameID") = Name
	dr("Name") = Name
	dr("Type") = InstanceTypeNodeList(i).InnerText
	dr("RecurrenceRule") = DBNull.Value
	dr("RecurrenceParentID") = DBNull.Value
	'0 = "  Instance type: 0-Single appointment<br>"
	'1 = "  Instance type: 1-Master recurring appointment<br>"
	'2 = "  Instance type: 2-Single instance, recurring appointment<br>"
	'3 = "  Instance type: 3-Exception to a recurring appointment<br>"
	dt.Rows.Add(dr)
	Next
	End If
	End Sub
	Function SendRequest(ByVal strCommand As String, ByVal strURL As String, ByVal strBody As String, _
	ByRef strStatusText As String, ByRef iStatCode As Integer) As XmlDocument
	Try
	' Create a new CredentialCache object and fill it with the network credentials required to access the server.
	Dim Username As String = System.Configuration.ConfigurationManager.AppSettings("UserForReadingCalendars")
	Dim Password As String = System.Configuration.ConfigurationManager.AppSettings("PwdForReadingCalendars")
	Dim strDomain As String = System.Configuration.ConfigurationManager.AppSettings("WindowsDomain")
	Dim myCred As New NetworkCredential(strDomain & "\" & Username, Password)
	Dim myUri As System.Uri = New System.Uri(strURL)
	Dim MyCredentialCache As New CredentialCache
	MyCredentialCache.Add(myUri, "Basic", myCred)
	' Create the HttpWebRequest object.
	Dim objRequest As HttpWebRequest = CType(WebRequest.Create(strURL), HttpWebRequest)
	' Add the network credentials to the request.
	objRequest.Credentials = MyCredentialCache
	' Specify the method.
	objRequest.Method = strCommand
	' Set Headers
	objRequest.KeepAlive = True
	objRequest.Headers.Set("Pragma", "no-cache")
	objRequest.ContentType = "text/xml"
	'Set the request timeout to 5 minutes
	objRequest.Timeout = 300000
	If (strBody.Length > 0) Then
	' Store the data in a byte array
	Dim ByteQuery() As Byte = System.Text.Encoding.ASCII.GetBytes(strBody)
	objRequest.ContentLength = ByteQuery.Length
	Dim QueryStream As Stream = objRequest.GetRequestStream()
	' Write the data to be posted to the Request Stream
	QueryStream.Write(ByteQuery, 0, ByteQuery.Length)
	QueryStream.Close()
	End If
	' Send the method request and get the response from the server.
	Dim objResponse As HttpWebResponse = CType(objRequest.GetResponse(), HttpWebResponse)
	' Get the Status code
	iStatCode = objResponse.StatusCode
	strStatusText = objResponse.StatusDescription
	' Get the XML response stream.
	Dim ResponseStream As System.IO.Stream = objResponse.GetResponseStream()
	' Create the XmlDocument object from the XML response stream.
	Dim ResponseXmlDoc As New System.Xml.XmlDocument
	ResponseXmlDoc.Load(ResponseStream)
	' Clean up.
	ResponseStream.Close()
	objResponse.Close()
	Return ResponseXmlDoc
	Catch ex As Exception
	Throw ex
	End Try
	Return Nothing
	End Function
	End Class

[Atanas Korchev]

Hi codispdp,

This error indicates that no resource has been populated. This can occur if your datasource returns empty result set.
You can check whether your XmlDataSource returns any data - for example you can try binding a regular dropdownlist control to it.

If this does not help you can open a support ticket and send us your project.

Regards,
Albert
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[codispdp]

I added a dropdown list and theXMLDatasource is fine I will open a support ticket.

[Irina]

Hi. I also have the same problem. Did you have any success with your support ticket? Has it been fixed yet?  

[Peter]

Hi Irina,

Dan sent us a demo project from which we discovered that the error is caused by a glitch in RadScheduler. Untill we fix it, you can add the resources dynamically from code behind. Here is an example in which the resources come from an xml file:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If (Not IsPostBack) Then
           '*  *   *
            RadScheduler1.DataSource = dt
            InitializeResources()
            RadScheduler1.DataBind()

        Else

        End If
    End Sub

    Private Sub InitializeResources()
        Dim resType As New ResourceType("Members")
        resType.ForeignKeyField = "NameID"
        RadScheduler1.ResourceTypes.Add(resType)

        Dim doc As XmlDocument = New XmlDocument()
        doc.Load(Server.MapPath("~/App_Data/TeamCalendarResources.xml"))

        For Each node As XmlNode In doc.SelectNodes("/names/name")
            Dim id As String = node.Attributes("NameID").Value
            Dim desc As String = node.Attributes("NameDesc").Value
            RadScheduler1.Resources.Add(New Resource("Members", id, desc))
        Next
    End Sub

The above code reads the xml file and creates a resource dynamically which is added to RadScheduler. I hope this offers you an acceptable solution for now. 


Greetings,
Peter
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center