Home / Community & Support / Developer Productivity Tools Forums / ASP.NET AJAX > Scheduler > Get the following error "Provider name cannot be null or empty."

• Faifal

  Posted on Feb 6, 2012 (permalink)

  I am getting the following error when I run a web page using RadScheduler Custom Provider:
  
  Provider name cannot be null or empty.
  
  I placed in the web config exactly what is supplied in the demo as well as examples posted on the site and I am still getting the above error.
  
  Here is what is within my web.config:
  
  

  <?xml version="1.0"?><br>

  <configuration><br>

    <configSections><br>

      <sectionGroup name="telerik.web.ui"><br>

        <section name="radScheduler" type="Telerik.Web.UI.RadSchedulerConfigurationSection, Telerik.Web.UI, PublicKeyToken=121fae78165ba3d4" allowDefinition="MachineToApplication"/><br>

      </sectionGroup><br>

    </configSections><br>

    <telerik.web.ui><br>

      <radScheduler defaultAppointmentProvider="Integrated"><br>

        <appointmentProviders><br>

          <add name="ClassSchedSchedulerData" type="Scheduler3.RDSchedulerProvider" persistChanges="false"/><br>

        </appointmentProviders><br>

      </radScheduler><br>

    </telerik.web.ui><br>

    <appSettings><br>

      <add key="Telerik.ScriptManager.TelerikCdn" value="Disabled"/><br>

      <add key="Telerik.StyleSheetManager.TelerikCdn" value="Disabled"/><br>

    </appSettings><br>

    <system.web><br>

      <compilation debug="true" targetFramework="4.0"><br>

        <assemblies><br>

          <add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><br>

          <add assembly="System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><br>

          <add assembly="System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><br>

          <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/><br>

          <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><br>

          <add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><br>

          <add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><br>

          <add assembly="System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><br>

          <add assembly="System.Speech, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><br>

        </assemblies><br>

      </compilation><br>

      <pages><br>

        <controls><br>

          <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI"/><br>

        </controls><br>

      </pages><br>

      <httpHandlers><br>

        <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false"/><br>

        <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false"/><br>

        <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false"/><br>

        <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false"/><br>

        <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false"/><br>

      </httpHandlers><br>

      <httpModules/><br>

    </system.web><br>

    <system.webServer><br>

      <validation validateIntegratedModeConfiguration="false"/><br>

      <modules runAllManagedModulesForAllRequests="true"/><br>

      <handlers><br>

        <remove name="ChartImage_axd"/><br>

        <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode"/><br>

        <remove name="Telerik_Web_UI_SpellCheckHandler_axd"/><br>

        <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode"/><br>

        <remove name="Telerik_Web_UI_DialogHandler_aspx"/><br>

        <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode"/><br>

        <remove name="Telerik_RadUploadProgressHandler_ashx"/><br>

        <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode"/><br>

        <remove name="Telerik_Web_UI_WebResource_axd"/><br>

        <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode"/><br>

      </handlers><br>

    </system.webServer><br>

  </configuration><br>

  
  
  
  
  This is the following code within my provider:
  
  

  using System;<br>

  using System.Collections.Generic;<br>

  using System.Linq;<br>

  using System.Web;<br>

  using Telerik.Web.UI;<br>

  using System.Data;<br>

  using SchedEZ.DataAccess;<br>

  using SchedEZ.Utilities;<br>

  <br>

  <br>

  namespace Scheduler3<br>

  {<br>

      public class RDSchedulerProvider : SchedulerProviderBase    <br>

      {<br>

  <br>

  <br>

          #region Declarations<br>

  <br>

  <br>

          private IDictionary<int, Resource> _staff;<br>

          private IDictionary<int, Resource> _students;<br>

          private IDictionary<int, Resource> _equipments;<br>

          private IDictionary<int, Resource> _buildingRooms;<br>

  <br>

  <br>

          private Boolean _persistChanges = false;<br>

  <br>

  <br>

          public enum eResourceType<br>

          {<br>

              BuildingRoom = 0,<br>

              Staff = 1,<br>

              Equipment = 2,<br>

              Student = 3<br>

          }<br>

  <br>

  <br>

          #endregion<br>

  <br>

  <br>

          #region Properties<br>

  <br>

  <br>

          #endregion<br>

  <br>

  <br>

          #region General Code<br>

  <br>

  <br>

          public override void Initialize(string name, System.Collections.Specialized.NameValueCollection config)<br>

          {<br>

              if (config == null)<br>

              {<br>

                  throw new ArgumentNullException("config");<br>

              }<br>

  <br>

  <br>

              string persistChanges = config["persistChanges"];<br>

              if (!string.IsNullOrEmpty(persistChanges))<br>

              {<br>

                  if (!bool.TryParse(persistChanges, out _persistChanges))<br>

                  {<br>

                      throw new Exception("Invalid value for PersistChanges attribute. Use 'True' or 'False'.");<br>

                  }<br>

              }<br>

              else<br>

              {<br>

                  _persistChanges = true;<br>

              }<br>

  <br>

  <br>

          }<br>

  <br>

  <br>

          public override IDictionary<ResourceType, IEnumerable<Resource>> GetResources(ISchedulerInfo schedulerInfo)<br>

          {<br>

              Dictionary<ResourceType, IEnumerable<Resource>> resCollection = new Dictionary<ResourceType, IEnumerable<Resource>>();<br>

  <br>

  <br>

              var myInfo = schedulerInfo as RDSchedulerInfo;<br>

              int classSchedID = myInfo.ClassSchedID;<br>

  <br>

  <br>

              // load the resources<br>

              if (_staff == null)<br>

                  _staff = ResourceStaff.loadResources(classSchedID);<br>

  <br>

  <br>

              if (_equipments == null)<br>

                  _equipments = ResourceEquipment.loadResources(classSchedID);<br>

  <br>

  <br>

              if (_students == null)<br>

                  _students = ResourceStudent.loadResources(classSchedID);<br>

  <br>

  <br>

              if (_buildingRooms == null)<br>

                  _buildingRooms = ResourceBuildingRoom.loadResources(classSchedID);<br>

  <br>

  <br>

  <br>

  <br>

              resCollection.Add(new ResourceType(Enum.GetName(typeof(eResourceType), eResourceType.Staff), true), _staff.Values);<br>

              resCollection.Add(new ResourceType(Enum.GetName(typeof(eResourceType), eResourceType.Student), true), _students.Values);<br>

              resCollection.Add(new ResourceType(Enum.GetName(typeof(eResourceType), eResourceType.BuildingRoom), false), _buildingRooms.Values);<br>

              resCollection.Add(new ResourceType(Enum.GetName(typeof(eResourceType), eResourceType.Equipment), true), _equipments.Values);<br>

  <br>

  <br>

              return resCollection;<br>

          }<br>

  <br>

  <br>

          public override IEnumerable<Appointment> GetAppointments(ISchedulerInfo schedulerInfo)<br>

          {<br>

              var myInfo = schedulerInfo as RDSchedulerInfo;<br>

              int classSchedID = myInfo.ClassSchedID;<br>

  <br>

  <br>

              List<Appointment> appointments = new List<Appointment>();<br>

  <br>

  <br>

              DataSet ds = ClassSchedWeekDayTime.getDataView_ByClassSchedID(classSchedID);<br>

  <br>

  <br>

              if (!ds.IsEmpty())<br>

              {<br>

                  foreach(DataRow dr in ds.Tables[0].Rows)<br>

                  {<br>

                      // create an appointment based on the data collected<br>

                      Appointment appt = ClassSchedule.addAppointment(dr);<br>

  <br>

  <br>

                      // load resources<br>

                      LoadResources(appt);<br>

  <br>

  <br>

                      // add to the appointments list<br>

                      appointments.Add(appt);<br>

                  }<br>

  <br>

  <br>

              }<br>

  <br>

  <br>

              return appointments;<br>

          }<br>

  <br>

  <br>

  <br>

  <br>

          private void LoadResources(Appointment apt)<br>

          {<br>

              // set the resource for each type<br>

  <br>

  <br>

              //Student<br>

              // students will be in every class schedule<br>

              foreach (KeyValuePair<int, Resource> res in _students)<br>

                  apt.Resources.Add(res.Value);<br>

  <br>

  <br>

              //Staff<br>

              List<Staff> sf = ResourceStaff.FindByID(apt.ID.toInt());<br>

              if (!sf.IsEmpty())<br>

              {<br>

                  foreach (Staff itm in sf)<br>

                      apt.Resources.Add(_staff[itm.StaffId]);<br>

              }<br>

  <br>

  <br>

              //Equipment<br>

              List<Equipment> eq = ResourceEquipment.FindByID(apt.ID.toInt());<br>

              if (!eq.IsEmpty())<br>

              {<br>

                  foreach (Equipment itm in eq)<br>

                      apt.Resources.Add(_equipments[itm.EquipmentId]);<br>

              }<br>

  <br>

  <br>

              //Equipment<br>

              List<BuildingRoom> br = ResourceBuildingRoom.FindByID(apt.ID.toInt());<br>

              if (!br.IsEmpty())<br>

              {<br>

                  foreach (BuildingRoom itm in br)<br>

                      apt.Resources.Add(_buildingRooms[itm.BuildingRoomID]);<br>

              }<br>

  <br>

  <br>

          }<br>

  <br>

  <br>

          public override void Insert(ISchedulerInfo schedulerInfo, Appointment appointmentToInsert)<br>

          {<br>

              base.Insert(schedulerInfo, appointmentToInsert);<br>

          }<br>

  <br>

  <br>

          public override void Update(ISchedulerInfo schedulerInfo, Appointment appointmentToUpdate)<br>

          {<br>

              base.Update(schedulerInfo, appointmentToUpdate);<br>

          }<br>

  <br>

  <br>

          public override void Delete(ISchedulerInfo schedulerInfo, Appointment appointmentToDelete)<br>

          {<br>

              base.Delete(schedulerInfo, appointmentToDelete);<br>

          }<br>

  <br>

  <br>

          #endregion<br>

      }<br>

  <br>

  <br>

  }<br>

  
  
  I really need help with this. A quick response to my issue would be greatly appreciated...
  
  thanks in advance
  
  
  

  Reply

• Genady Sergeev Genady Sergeev

  Posted on Feb 10, 2012 (permalink)

  Hi Faifal,
  
  Try implementing the Name property (it is defined in the base class) , however, it can be overriden. Also try calling the base initialize method. One of these should solve the problem.
  
  Please note that forum posts does not have guaranteed  response time and if there is an urgent issue it is best to submit a support tiket.
  
  Greetings,
  Genady Sergeev
  the Telerik team

  Sharpen your .NET Ninja skills! Attend Q1 webinar week and get a chance to win a license! Book your seat now >>

  Reply

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Home / Community & Support / Developer Productivity Tools Forums / ASP.NET AJAX > Scheduler > Get the following error "Provider name cannot be null or empty."