Step 3 of 4: Adding the Code to your Application

In this step you will add the code to control your application.

Right-click your application and select View Code from the list.

Add the following statements to the Import or using statements at the top of the page:

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Imports C1.Silverlight.Schedule Imports System.Collections.Specialized Imports C1.C1Schedule Imports C1.Silverlight.Data Imports System.IO Imports System.Windows.Data Imports System.Globalization Imports MultiUser.DataService

Visual Basic

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Imports C1.Silverlight.Schedule
Imports System.Collections.Specialized
Imports C1.C1Schedule
Imports C1.Silverlight.Data
Imports System.IO
Imports System.Windows.Data
Imports System.Globalization
Imports MultiUser.DataService

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using C1.Silverlight.Schedule; using System.Collections.Specialized; using C1.C1Schedule; using C1.Silverlight.Data; using MultiUser.DataService; using System.IO; using System.Windows.Data; using System.Globalization; using System.ServiceModel;

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using C1.Silverlight.Schedule;
using System.Collections.Specialized;
using C1.C1Schedule;
using C1.Silverlight.Data;
using MultiUser.DataService;
using System.IO;
using System.Windows.Data;
using System.Globalization;
using System.ServiceModel;

Insert the following code below the initial class statement:

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Private _ds As DataSet = Nothing Private _dtAppointments As DataTable = Nothing Private _dtEmployees As DataTable = Nothing Private _dtCustomers As DataTable = Nothing

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private DataSet _ds = null; private DataTable _dtAppointments = null; private DataTable _dtEmployees = null; private DataTable _dtCustomers = null;

Add the following code directly underneath the InitializeComponent() method call to set C1Scheduler.ReminderFire and Scheduler.GroupItems.CollectionChanged event handlers:

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AddHandler Scheduler.ReminderFire, AddressOf scheduler_ReminderFire AddHandler Scheduler.GroupItems.CollectionChanged, GroupItems_CollectionChanged

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Scheduler.ReminderFire += new EventHandler<ReminderActionEventArgs>(scheduler_ReminderFire); Scheduler.GroupItems.CollectionChanged += new NotifyCollectionChangedEventHandler(GroupItems_CollectionChanged);

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Scheduler.ReminderFire += new EventHandler<ReminderActionEventArgs>(scheduler_ReminderFire);
Scheduler.GroupItems.CollectionChanged += new NotifyCollectionChangedEventHandler(GroupItems_CollectionChanged);

Set the mappings for the AppointmentStorage, OwnerStorage, and ContactStorage for the Scheduler:

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' set mappings for the AppointmentStorages Dim storage As AppointmentStorage = Scheduler.DataStorage.AppointmentStorage storage.Mappings.AppointmentProperties.MappingName = "Properties" storage.Mappings.Body.MappingName = "Description" storage.Mappings.[End].MappingName = "End" storage.Mappings.IdMapping.MappingName = "AppointmentId" storage.Mappings.Location.MappingName = "Location" storage.Mappings.Start.MappingName = "Start" storage.Mappings.Subject.MappingName = "Subject" storage.Mappings.OwnerIndexMapping.MappingName = "Owner" ' set mappings for the OwnerStorage Dim ownerStorage As ContactStorage = Scheduler.DataStorage.OwnerStorage AddHandler DirectCast(ownerStorage.Contacts, INotifyCollectionChanged).CollectionChanged, New NotifyCollectionChangedEventHandler(AddressOf Owners_CollectionChanged) ownerStorage.Mappings.IndexMapping.MappingName = "EmployeeId" ownerStorage.Mappings.TextMapping.MappingName = "FirstName" ' set mappings for the ContactStorage Dim cntStorage As ContactStorage = Scheduler.DataStorage.ContactStorage AddHandler DirectCast(cntStorage.Contacts, INotifyCollectionChanged).CollectionChanged, New NotifyCollectionChangedEventHandler(AddressOf Contacts_CollectionChanged) cntStorage.Mappings.IdMapping.MappingName = "CustomerId" cntStorage.Mappings.TextMapping.MappingName = "CompanyName" ' load data from server LoadData()

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' set mappings for the AppointmentStorages
        Dim storage As AppointmentStorage = Scheduler.DataStorage.AppointmentStorage
        storage.Mappings.AppointmentProperties.MappingName = "Properties"
        storage.Mappings.Body.MappingName = "Description"
        storage.Mappings.[End].MappingName = "End"
        storage.Mappings.IdMapping.MappingName = "AppointmentId"
        storage.Mappings.Location.MappingName = "Location"
        storage.Mappings.Start.MappingName = "Start"
        storage.Mappings.Subject.MappingName = "Subject"
        storage.Mappings.OwnerIndexMapping.MappingName = "Owner"

        ' set mappings for the OwnerStorage
        Dim ownerStorage As ContactStorage = Scheduler.DataStorage.OwnerStorage
        AddHandler DirectCast(ownerStorage.Contacts, INotifyCollectionChanged).CollectionChanged, New NotifyCollectionChangedEventHandler(AddressOf Owners_CollectionChanged)
        ownerStorage.Mappings.IndexMapping.MappingName = "EmployeeId"
        ownerStorage.Mappings.TextMapping.MappingName = "FirstName"

        ' set mappings for the ContactStorage
        Dim cntStorage As ContactStorage = Scheduler.DataStorage.ContactStorage
        AddHandler DirectCast(cntStorage.Contacts, INotifyCollectionChanged).CollectionChanged, New NotifyCollectionChangedEventHandler(AddressOf Contacts_CollectionChanged)
        cntStorage.Mappings.IdMapping.MappingName = "CustomerId"
        cntStorage.Mappings.TextMapping.MappingName = "CompanyName"

        ' load data from server
        LoadData()

C#	Copy Code
// set mappings for the AppointmentStorages AppointmentStorage storage = Scheduler.DataStorage.AppointmentStorage; storage.Mappings.AppointmentProperties.MappingName = "Properties"; storage.Mappings.Body.MappingName = "Description"; storage.Mappings.End.MappingName = "End"; storage.Mappings.IdMapping.MappingName = "AppointmentId"; storage.Mappings.Location.MappingName = "Location"; storage.Mappings.Start.MappingName = "Start"; storage.Mappings.Subject.MappingName = "Subject"; storage.Mappings.OwnerIndexMapping.MappingName = "Owner"; // set mappings for the OwnerStorage ContactStorage ownerStorage = Scheduler.DataStorage.OwnerStorage; ((INotifyCollectionChanged)ownerStorage.Contacts).CollectionChanged += new NotifyCollectionChangedEventHandler(Owners_CollectionChanged); ownerStorage.Mappings.IndexMapping.MappingName = "EmployeeId"; ownerStorage.Mappings.TextMapping.MappingName = "FirstName"; // set mappings for the ContactStorage ContactStorage cntStorage = Scheduler.DataStorage.ContactStorage; ((INotifyCollectionChanged)cntStorage.Contacts).CollectionChanged += new NotifyCollectionChangedEventHandler(Contacts_CollectionChanged); cntStorage.Mappings.IdMapping.MappingName = "CustomerId"; cntStorage.Mappings.TextMapping.MappingName = "CompanyName"; // load data from server LoadData();

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// set mappings for the AppointmentStorages
            AppointmentStorage storage = Scheduler.DataStorage.AppointmentStorage;
            storage.Mappings.AppointmentProperties.MappingName = "Properties";
            storage.Mappings.Body.MappingName = "Description";
            storage.Mappings.End.MappingName = "End";
            storage.Mappings.IdMapping.MappingName = "AppointmentId";
            storage.Mappings.Location.MappingName = "Location";
            storage.Mappings.Start.MappingName = "Start";
            storage.Mappings.Subject.MappingName = "Subject";
            storage.Mappings.OwnerIndexMapping.MappingName = "Owner";

            // set mappings for the OwnerStorage
            ContactStorage ownerStorage = Scheduler.DataStorage.OwnerStorage;
            ((INotifyCollectionChanged)ownerStorage.Contacts).CollectionChanged += new NotifyCollectionChangedEventHandler(Owners_CollectionChanged);
            ownerStorage.Mappings.IndexMapping.MappingName = "EmployeeId";
            ownerStorage.Mappings.TextMapping.MappingName = "FirstName";

            // set mappings for the ContactStorage
            ContactStorage cntStorage = Scheduler.DataStorage.ContactStorage;
            ((INotifyCollectionChanged)cntStorage.Contacts).CollectionChanged += new NotifyCollectionChangedEventHandler(Contacts_CollectionChanged);
            cntStorage.Mappings.IdMapping.MappingName = "CustomerId";
            cntStorage.Mappings.TextMapping.MappingName = "CompanyName";

            // load data from server
            LoadData();

Add the following code to handle the GroupItems_CollectionChanged event:

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Private Sub GroupItems_CollectionChanged(sender As Object, e As NotifyCollectionChangedEventArgs) For Each group As SchedulerGroupItem In Scheduler.GroupItems If group.Owner IsNot Nothing Then ' set SchedulerGroupItem.Tag property to the data row. That allows to use data row fields in xaml for binding Dim index As Integer = CInt(group.Owner.Key(0)) group.Tag = _dtEmployees.Rows.Find(index) End If Next End Sub

Visual Basic

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Private Sub GroupItems_CollectionChanged(sender As Object, e As NotifyCollectionChangedEventArgs)
        For Each group As SchedulerGroupItem In Scheduler.GroupItems
            If group.Owner IsNot Nothing Then
                ' set SchedulerGroupItem.Tag property to the data row. That allows to use data row fields in xaml for binding
                Dim index As Integer = CInt(group.Owner.Key(0))
                group.Tag = _dtEmployees.Rows.Find(index)
            End If
        Next
    End Sub

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void GroupItems_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { foreach (SchedulerGroupItem group in Scheduler.GroupItems) { if (group.Owner != null) { // set SchedulerGroupItem.Tag property to the data row. That allows to use data row fields in xaml for binding int index = (int)group.Owner.Key[0]; group.Tag = _dtEmployees.Rows.Find(index); } } }

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void GroupItems_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            foreach (SchedulerGroupItem group in Scheduler.GroupItems)
            {
                if (group.Owner != null)
                {
                    // set SchedulerGroupItem.Tag property to the data row. That allows to use data row fields in xaml for binding
                    int index = (int)group.Owner.Key[0];
                    group.Tag = _dtEmployees.Rows.Find(index);
                }
            }
        }

Use the following code to handle the Owners_CollectionChanged event:

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Private Sub Owners_CollectionChanged(sender As Object, e As NotifyCollectionChangedEventArgs) If e.Action = NotifyCollectionChangedAction.Add Then For Each cnt As Contact In e.NewItems Dim row As DataRow = _dtEmployees.Rows.Find(cnt.Key(0)) If row IsNot Nothing Then ' set Contact.MenuCaption to the FirstName + LastName string cnt.MenuCaption = row("FirstName").ToString() & " " & row("LastName").ToString() End If Next End If End Sub

Visual Basic

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Private Sub Owners_CollectionChanged(sender As Object, e As NotifyCollectionChangedEventArgs)
        If e.Action = NotifyCollectionChangedAction.Add Then
            For Each cnt As Contact In e.NewItems
                Dim row As DataRow = _dtEmployees.Rows.Find(cnt.Key(0))
                If row IsNot Nothing Then
                    ' set Contact.MenuCaption to the FirstName + LastName string
                    cnt.MenuCaption = row("FirstName").ToString() & " " & row("LastName").ToString()
                End If
            Next
        End If
    End Sub

C#	Copy Code
void Owners_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { if (e.Action == NotifyCollectionChangedAction.Add) { foreach (Contact cnt in e.NewItems) { DataRow row = _dtEmployees.Rows.Find(cnt.Key[0]); if (row != null) { // set Contact.MenuCaption to the FirstName + LastName string cnt.MenuCaption = row["FirstName"].ToString() + " " + row["LastName"].ToString(); } } } }

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void Owners_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            if (e.Action == NotifyCollectionChangedAction.Add)
            {
                foreach (Contact cnt in e.NewItems)
                {
                    DataRow row = _dtEmployees.Rows.Find(cnt.Key[0]);
                    if (row != null)
                    {
                        // set Contact.MenuCaption to the FirstName + LastName string
                        cnt.MenuCaption = row["FirstName"].ToString() + " " + row["LastName"].ToString();
                    }
                }
            }
        }

Insert the code below to handle the Contacts_CollectionChanged event:

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Private Sub Contacts_CollectionChanged(sender As Object, e As NotifyCollectionChangedEventArgs) If e.Action = NotifyCollectionChangedAction.Add Then For Each cnt As Contact In e.NewItems Dim row As DataRow = _dtCustomers.Rows.Find(cnt.Key(0)) If row IsNot Nothing Then ' set Contact.MenuCaption to the CompanyName + Contactname string cnt.MenuCaption = row("CompanyName").ToString() & " (" & row("ContactName").ToString() & ")" End If Next End If End Sub

Visual Basic

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Private Sub Contacts_CollectionChanged(sender As Object, e As NotifyCollectionChangedEventArgs)
        If e.Action = NotifyCollectionChangedAction.Add Then
            For Each cnt As Contact In e.NewItems
                Dim row As DataRow = _dtCustomers.Rows.Find(cnt.Key(0))
                If row IsNot Nothing Then
                    ' set Contact.MenuCaption to the CompanyName + Contactname string
                    cnt.MenuCaption = row("CompanyName").ToString() & " (" & row("ContactName").ToString() & ")"
                End If
            Next
        End If
    End Sub

C#	Copy Code
void Contacts_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { if (e.Action == NotifyCollectionChangedAction.Add) { foreach (Contact cnt in e.NewItems) { DataRow row = _dtCustomers.Rows.Find(cnt.Key[0]); if (row != null) { // set Contact.MenuCaption to the CompanyName + Contactname string cnt.MenuCaption = row["CompanyName"].ToString() + " (" + row["ContactName"].ToString() + ")"; } } } }

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void Contacts_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            if (e.Action == NotifyCollectionChangedAction.Add)
            {
                foreach (Contact cnt in e.NewItems)
                {
                    DataRow row = _dtCustomers.Rows.Find(cnt.Key[0]);
                    if (row != null)
                    {
                        // set Contact.MenuCaption to the CompanyName + Contactname string
                        cnt.MenuCaption = row["CompanyName"].ToString() + " (" + row["ContactName"].ToString() + ")";
                    }
                }
            }
        }

Add an event handler to prevent showing reminders:

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' prevent showing reminders Private Sub scheduler_ReminderFire(sender As Object, e As ReminderActionEventArgs) e.Handled = True End Sub

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// prevent showing reminders private void scheduler_ReminderFire(object sender, ReminderActionEventArgs e) { e.Handled = true; }

Insert the following region to handle loading data:

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#Region "** loading data" ' Get data service relative to current host/domain Private Function GetDataService() As DataServiceSoapClient ' Increase buffer size Dim binding = New System.ServiceModel.BasicHttpBinding() binding.MaxReceivedMessageSize = 2147483647 ' int.MaxValue binding.MaxBufferSize = 2147483647 ' int.MaxValue ' Get absolute service address Dim uri As Uri = C1.Silverlight.Extensions.GetAbsoluteUri("DataService.asmx") Dim address = New System.ServiceModel.EndpointAddress(uri) ' Return new service client Return New DataServiceSoapClient(binding, address) End Function Private Sub LoadData() ' Invoke Web service Dim svc = GetDataService() AddHandler svc.GetDataCompleted, AddressOf svc_GetDataCompleted svc.GetDataAsync("Appointments,Employees,Customers") End Sub Private Sub svc_GetDataCompleted(sender As Object, e As GetDataCompletedEventArgs) ' Handle errors If e.[Error] IsNot Nothing Then tbStatus.Text = "Error downloading data..." Return End If ' Parse data stream from server (DataSet as XML) tbStatus.Text = String.Format("Got data, {0:n0} kBytes", e.Result.Length / 1024) Dim ms = New MemoryStream(e.Result) _ds = New DataSet() _ds.EnforceConstraints = False _ds.ReadXml(ms) _ds.EnforceConstraints = True ' Got the data, find the table _dtAppointments = _ds.Tables("Appointments") _dtEmployees = _ds.Tables("Employees") _dtCustomers = _ds.Tables("Customers") ' set C1Scheduler data source to the DataTable loaded from server Scheduler.DataStorage.AppointmentStorage.DataSource = _dtAppointments Scheduler.DataStorage.ContactStorage.DataSource = _dtCustomers Scheduler.DataStorage.OwnerStorage.DataSource = _dtEmployees End Sub #End Region

Visual Basic

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#Region "** loading data"

    ' Get data service relative to current host/domain
    Private Function GetDataService() As DataServiceSoapClient

        ' Increase buffer size
        Dim binding = New System.ServiceModel.BasicHttpBinding()
        binding.MaxReceivedMessageSize = 2147483647

        ' int.MaxValue
        binding.MaxBufferSize = 2147483647

        ' int.MaxValue
        ' Get absolute service address

        Dim uri As Uri = C1.Silverlight.Extensions.GetAbsoluteUri("DataService.asmx")
        Dim address = New System.ServiceModel.EndpointAddress(uri)

        ' Return new service client
        Return New DataServiceSoapClient(binding, address)
    End Function
 
    Private Sub LoadData()
        ' Invoke Web service
        Dim svc = GetDataService()
        AddHandler svc.GetDataCompleted, AddressOf svc_GetDataCompleted
        svc.GetDataAsync("Appointments,Employees,Customers")
    End Sub
 
    Private Sub svc_GetDataCompleted(sender As Object, e As GetDataCompletedEventArgs)
        ' Handle errors
        If e.[Error] IsNot Nothing Then
            tbStatus.Text = "Error downloading data..."
            Return
        End If

        ' Parse data stream from server (DataSet as XML)
        tbStatus.Text = String.Format("Got data, {0:n0} kBytes", e.Result.Length / 1024)
 
        Dim ms = New MemoryStream(e.Result)
        _ds = New DataSet()
        _ds.EnforceConstraints = False
        _ds.ReadXml(ms)
        _ds.EnforceConstraints = True

        ' Got the data, find the table
        _dtAppointments = _ds.Tables("Appointments")
        _dtEmployees = _ds.Tables("Employees")
        _dtCustomers = _ds.Tables("Customers")

        ' set C1Scheduler data source to the DataTable loaded from server
        Scheduler.DataStorage.AppointmentStorage.DataSource = _dtAppointments
        Scheduler.DataStorage.ContactStorage.DataSource = _dtCustomers
        Scheduler.DataStorage.OwnerStorage.DataSource = _dtEmployees
    End Sub
#End Region

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#region ** loading data // Get data service relative to current host/domain DataServiceSoapClient GetDataService() { // Increase buffer size var binding = new System.ServiceModel.BasicHttpBinding(); binding.MaxReceivedMessageSize = 2147483647; // int.MaxValue binding.MaxBufferSize = 2147483647; // int.MaxValue // Get absolute service address Uri uri = C1.Silverlight.Extensions.GetAbsoluteUri("DataService.asmx"); var address = new System.ServiceModel.EndpointAddress(uri); // Return new service client return new DataServiceSoapClient(binding, address); } void LoadData() { // Invoke Web service var svc = GetDataService(); svc.GetDataCompleted += svc_GetDataCompleted; svc.GetDataAsync("Appointments,Employees,Customers"); } void svc_GetDataCompleted(object sender, GetDataCompletedEventArgs e) { // Handle errors if (e.Error != null) { tbStatus.Text = "Error downloading data..."; return; } // Parse data stream from server (DataSet as XML) tbStatus.Text = string.Format( "Got data, {0:n0} kBytes", e.Result.Length / 1024); var ms = new MemoryStream(e.Result); _ds = new DataSet(); _ds.EnforceConstraints = false; _ds.ReadXml(ms); _ds.EnforceConstraints = true; // Got the data, find the table _dtAppointments = _ds.Tables["Appointments"]; _dtEmployees = _ds.Tables["Employees"]; _dtCustomers = _ds.Tables["Customers"]; // set C1Scheduler data source to the DataTable loaded from server Scheduler.DataStorage.AppointmentStorage.DataSource = _dtAppointments; Scheduler.DataStorage.ContactStorage.DataSource = _dtCustomers; Scheduler.DataStorage.OwnerStorage.DataSource = _dtEmployees; } #endregion

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#region ** loading data
        // Get data service relative to current host/domain
        DataServiceSoapClient GetDataService()
        {
            // Increase buffer size
            var binding = new System.ServiceModel.BasicHttpBinding();
            binding.MaxReceivedMessageSize = 2147483647; // int.MaxValue
            binding.MaxBufferSize = 2147483647; // int.MaxValue

            // Get absolute service address
            Uri uri = C1.Silverlight.Extensions.GetAbsoluteUri("DataService.asmx");
            var address = new System.ServiceModel.EndpointAddress(uri);

            // Return new service client
            return new DataServiceSoapClient(binding, address);
        }

        void LoadData()
        {
            // Invoke Web service
            var svc = GetDataService();
            svc.GetDataCompleted += svc_GetDataCompleted;
            svc.GetDataAsync("Appointments,Employees,Customers");
        }
 
        void svc_GetDataCompleted(object sender, GetDataCompletedEventArgs e)
        {
            // Handle errors
            if (e.Error != null)
            {
                tbStatus.Text = "Error downloading data...";
                return;
            }

            // Parse data stream from server (DataSet as XML)
            tbStatus.Text = string.Format(
              "Got data, {0:n0} kBytes", e.Result.Length / 1024);
 
            var ms = new MemoryStream(e.Result);
            _ds = new DataSet();
            _ds.EnforceConstraints = false;
            _ds.ReadXml(ms);
            _ds.EnforceConstraints = true;
 
            // Got the data, find the table
            _dtAppointments = _ds.Tables["Appointments"];
            _dtEmployees = _ds.Tables["Employees"];
            _dtCustomers = _ds.Tables["Customers"];

            // set C1Scheduler data source to the DataTable loaded from server
            Scheduler.DataStorage.AppointmentStorage.DataSource = _dtAppointments;
            Scheduler.DataStorage.ContactStorage.DataSource = _dtCustomers;
            Scheduler.DataStorage.OwnerStorage.DataSource = _dtEmployees;
        }
        #endregion

The following code handles the Scheduler_StyleChanged event:

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Private Sub Scheduler_StyleChanged(sender As Object, e As RoutedEventArgs) If Scheduler.Style Is Scheduler.TimeLineStyle Then ' update group header (use different headers for TimeLine and other views) Scheduler.GroupHeaderTemplate = DirectCast(Resources("myCustomTimeLineGroupHeaderTemplate"), DataTemplate) btnTimeLine.IsChecked = True Else ' update group header (use different headers for TimeLine and other views) Scheduler.GroupHeaderTemplate = DirectCast(Resources("myCustomGroupHeaderTemplate"), DataTemplate) ' update toolbar buttons state according to the current C1Scheduler view If Scheduler.Style Is Scheduler.WorkingWeekStyle Then btnWorkWeek.IsChecked = True ElseIf Scheduler.Style Is Scheduler.WeekStyle Then btnWeek.IsChecked = True ElseIf Scheduler.Style Is Scheduler.MonthStyle Then btnMonth.IsChecked = True Else btnDay.IsChecked = True End If End If End Sub

Visual Basic

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Private Sub Scheduler_StyleChanged(sender As Object, e As RoutedEventArgs)
        If Scheduler.Style Is Scheduler.TimeLineStyle Then
            ' update group header (use different headers for TimeLine and other views)
            Scheduler.GroupHeaderTemplate = DirectCast(Resources("myCustomTimeLineGroupHeaderTemplate"), DataTemplate)
            btnTimeLine.IsChecked = True
        Else
            ' update group header (use different headers for TimeLine and other views)
            Scheduler.GroupHeaderTemplate = DirectCast(Resources("myCustomGroupHeaderTemplate"), DataTemplate)
            ' update toolbar buttons state according to the current C1Scheduler view
            If Scheduler.Style Is Scheduler.WorkingWeekStyle Then
                btnWorkWeek.IsChecked = True
            ElseIf Scheduler.Style Is Scheduler.WeekStyle Then
                btnWeek.IsChecked = True
            ElseIf Scheduler.Style Is Scheduler.MonthStyle Then
                btnMonth.IsChecked = True
            Else
                btnDay.IsChecked = True
            End If
        End If
    End Sub

C#	Copy Code
private void Scheduler_StyleChanged(object sender, RoutedEventArgs e) { if (Scheduler.Style == Scheduler.TimeLineStyle) { // update group header (use different headers for TimeLine and other views) Scheduler.GroupHeaderTemplate = (DataTemplate)Resources["myCustomTimeLineGroupHeaderTemplate"]; btnTimeLine.IsChecked = true; } else { // update group header (use different headers for TimeLine and other views) Scheduler.GroupHeaderTemplate = (DataTemplate)Resources["myCustomGroupHeaderTemplate"]; // update toolbar buttons state according to the current C1Scheduler view if (Scheduler.Style == Scheduler.WorkingWeekStyle) { btnWorkWeek.IsChecked = true; } else if (Scheduler.Style == Scheduler.WeekStyle) { btnWeek.IsChecked = true; } else if (Scheduler.Style == Scheduler.MonthStyle) { btnMonth.IsChecked = true; } else { btnDay.IsChecked = true; } } }

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private void Scheduler_StyleChanged(object sender, RoutedEventArgs e)
        {
            if (Scheduler.Style == Scheduler.TimeLineStyle)
            {
                // update group header (use different headers for TimeLine and other views)
                Scheduler.GroupHeaderTemplate = (DataTemplate)Resources["myCustomTimeLineGroupHeaderTemplate"];
                btnTimeLine.IsChecked = true;
            }
            else
            {
                // update group header (use different headers for TimeLine and other views)
                Scheduler.GroupHeaderTemplate = (DataTemplate)Resources["myCustomGroupHeaderTemplate"];
                // update toolbar buttons state according to the current C1Scheduler view
                if (Scheduler.Style == Scheduler.WorkingWeekStyle)
                {
                    btnWorkWeek.IsChecked = true;
                }
                else if (Scheduler.Style == Scheduler.WeekStyle)
                {
                    btnWeek.IsChecked = true;
                }
                else if (Scheduler.Style == Scheduler.MonthStyle)
                {
                    btnMonth.IsChecked = true;
                }
                else
                {
                    btnDay.IsChecked = true;
                }
            }
        }

The last section of code to insert is the code that creates the BooleanToVisibilityConverter:

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Public Class BooleanToVisibilityConverter Implements IValueConverter Public Function Convert(value As Object, targetType As Type, parameter As Object, culture As CultureInfo) As Object If TypeOf value Is [Boolean] Then Return If(CBool(value), Visibility.Visible, Visibility.Collapsed) End If Return value End Function Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, culture As CultureInfo) As Object Throw New NotImplementedException() End Function Public Function Convert1(value As Object, targetType As System.Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IValueConverter.Convert Return value End Function Public Function ConvertBack1(value As Object, targetType As System.Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IValueConverter.ConvertBack Return value End Function End Class End Class

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Public Class BooleanToVisibilityConverter
        Implements IValueConverter
        Public Function Convert(value As Object, targetType As Type, parameter As Object, culture As CultureInfo) As Object
            If TypeOf value Is [Boolean] Then
                Return If(CBool(value), Visibility.Visible, Visibility.Collapsed)
            End If
            Return value
        End Function
        Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, culture As CultureInfo) As Object
            Throw New NotImplementedException()
        End Function
        Public Function Convert1(value As Object, targetType As System.Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IValueConverter.Convert
            Return value
        End Function
        Public Function ConvertBack1(value As Object, targetType As System.Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IValueConverter.ConvertBack
            Return value
        End Function
    End Class
End Class

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public class BooleanToVisibilityConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (value is Boolean) { return ((bool)value) ? Visibility.Visible : Visibility.Collapsed; } return value; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } } }

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public class BooleanToVisibilityConverter : IValueConverter
        {
            public object Convert(object value, Type targetType, object parameter,
                                  CultureInfo culture)
            {
                if (value is Boolean)
                {
                    return ((bool)value) ? Visibility.Visible : Visibility.Collapsed;
                }
                return value;
            }
            public object ConvertBack(object value, Type targetType, object parameter,
                                      CultureInfo culture)
            {
                throw new NotImplementedException();
            }
        }
    }
}