Custom Task Code Example

public class CustomTask : INotifyPropertyChanged
    {
        #region Private variables
        private string dataItemId;
        private DateTime? start;
        private string taskName;
        private TimeSpan? duration;
        private string tasks;
        private string predecesors;
        private DateTime? constraintDate;
        private string constraintType;
        private string durationFormat;
        private string resources;
        #endregion // Private variables
        #region Public Properties
        public string DataItemId
        {
            get { return dataItemId; }
            set
            {
                if (value != dataItemId)
                {
                    dataItemId = value;
                    OnPropertyChanged("DataItemId");
                }
            }
        }
        public DateTime? Start
        {
            get { return start; }
            set
            {
                if (value != start)
                {
                    start = value;
                    OnPropertyChanged("Start");
                }
            }
        }
        public string TaskName
        {
            get { return taskName; }
            set
            {
                if (value != taskName)
                {
                    taskName = value;
                    OnPropertyChanged("TaskName");
                }
            }
        }
        public TimeSpan? Duration
        {
            get { return duration; }
            set
            {
                if (duration != value)
                {
                    duration = value;
                    OnPropertyChanged("Duration");
                }
            }
        }
        public string Tasks
        {
            get { return tasks; }
            set
            {
                if (value != tasks)
                {
                    tasks = value;
                    OnPropertyChanged("Tasks");
                }
            }
        }
        public string Predecessors
        {
            get { return predecesors; }
            set
            {
                if (value != predecesors)
                {
                    predecesors = value;
                    OnPropertyChanged("Predecessors");
                }
            }
        }
        public DateTime? ConstraintDate
        {
            get { return constraintDate; }
            set
            {
                if (value != constraintDate)
                {
                    constraintDate = value;
                    OnPropertyChanged("ConstraintDate");
                }
            }
        }
        public string ConstraintType
        {
            get { return constraintType; }
            set
            {
                if (value != constraintType)
                {
                    constraintType = value;
                    OnPropertyChanged("ConstraintType");
                }
            }
        }
        public string DurationFormat
        {
            get { return durationFormat; }
            set
            {
                if (value != durationFormat)
                {
                    durationFormat = value;
                    OnPropertyChanged("DurationFormat");
                }
            }
        }
        public string Resources
        {
            get { return resources; }
            set
            {
                if (value != resources)
                {
                    resources = value;
                    OnPropertyChanged("Resources");
                }
            }
        }
        #endregion // Public properties
        #region INotifyPropertyChanged
        public event PropertyChangedEventHandler PropertyChanged;
        public void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
        #endregion // INotifyPropertyChanged
    }

Public Class CustomTask
      Implements INotifyPropertyChanged
      #Region "Private variables"
      Private m_dataItemId As String
      Private m_start As System.Nullable(Of DateTime)
      Private m_taskName As String
      Private m_duration As System.Nullable(Of TimeSpan)
      Private m_tasks As String
      Private predecesors As String
      Private m_constraintDate As System.Nullable(Of DateTime)
      Private m_constraintType As String
      Private m_durationFormat As String
      Private m_resources As String
      #End Region
      #Region "Public Properties"
      Public Property DataItemId() As String
            Get
                  Return m_dataItemId
            End Get
            Set
                  If value <> m_dataItemId Then
                        m_dataItemId = value
                        OnPropertyChanged("DataItemId")
                  End If
            End Set
      End Property
      Public Property Start() As System.Nullable(Of DateTime)
            Get
                  Return m_start
            End Get
            Set
                  If value <> m_start Then
                        m_start = value
                        OnPropertyChanged("Start")
                  End If
            End Set
      End Property
      Public Property TaskName() As String
            Get
                  Return m_taskName
            End Get
            Set
                  If value <> m_taskName Then
                        m_taskName = value
                        OnPropertyChanged("TaskName")
                  End If
            End Set
      End Property
      Public Property Duration() As System.Nullable(Of TimeSpan)
            Get
                  Return m_duration
            End Get
            Set
                  If m_duration <> value Then
                        m_duration = value
                        OnPropertyChanged("Duration")
                  End If
            End Set
      End Property
      Public Property Tasks() As String
            Get
                  Return m_tasks
            End Get
            Set
                  If value <> m_tasks Then
                        m_tasks = value
                        OnPropertyChanged("Tasks")
                  End If
            End Set
      End Property
      Public Property Predecessors() As String
            Get
                  Return predecesors
            End Get
            Set
                  If value <> predecesors Then
                        predecesors = value
                        OnPropertyChanged("Predecessors")
                  End If
            End Set
      End Property
      Public Property ConstraintDate() As System.Nullable(Of DateTime)
            Get
                  Return m_constraintDate
            End Get
            Set
                  If value <> m_constraintDate Then
                        m_constraintDate = value
                        OnPropertyChanged("ConstraintDate")
                  End If
            End Set
      End Property
      Public Property ConstraintType() As String
            Get
                  Return m_constraintType
            End Get
            Set
                  If value <> m_constraintType Then
                        m_constraintType = value
                        OnPropertyChanged("ConstraintType")
                  End If
            End Set
      End Property
      Public Property DurationFormat() As String
            Get
                  Return m_durationFormat
            End Get
            Set
                  If value <> m_durationFormat Then
                        m_durationFormat = value
                        OnPropertyChanged("DurationFormat")
                  End If
            End Set
      End Property
      Public Property Resources() As String
            Get
                  Return m_resources
            End Get
            Set
                  If value <> m_resources Then
                        m_resources = value
                        OnPropertyChanged("Resources")
                  End If
            End Set
      End Property
      #End Region
      #Region "INotifyPropertyChanged"
      Public Event PropertyChanged As PropertyChangedEventHandler
      Public Sub OnPropertyChanged(propertyName As String)
            RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(propertyName))
      End Sub
      #End Region
End Class