Improve Performance Of RadCalendar

[David Quick]

We are using the RadCalendar in a FillTool for one of our Apps.  The first time it loads it is very slow, depending on the computer.  We have a couple of slower computer in the office and it takes up too 5 or 6 seconds to display the first time.  From then on it load rather quickly is there a way to cache this control on application start so it loads fast every time.

Using:
Silverlight 4 and Version 2010.3.1314.1040 of radcontrols

ToolDate.xaml

<v:Tool xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"  x:Class="CalendarPerformanceTest.ToolDate"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:sys="clr-namespace:System;assembly=mscorlib"
         xmlns:t="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
         xmlns:v="clr-namespace:RI.View"
         xmlns:q="clr-namespace:QISS.Base.DB.QDM"
         xmlns:telerik ="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Input"
         mc:Ignorable="d"
         d:DesignHeight="500" d:DesignWidth="550">
    <UserControl.Resources>
        <q:QListItem  x:Key="DefaultValue" R="{}{AllTime}" D="{}{AllTime}"></q:QListItem>
        <q:QListItems x:Key="singles">
            <q:QListItem  R="{}{Today}" D="{}{Today}"></q:QListItem>
            <q:QListItem  R="{}{WeekStart}" D="{}{WeekStart}"></q:QListItem>
            <q:QListItem  R="{}{WeekEnd}" D="{}{WeekEnd}"></q:QListItem>
            <q:QListItem  R="{}{MonthStart}" D="{}{MonthStart}"></q:QListItem>
            <q:QListItem  R="{}{MonthEnd}" D="{}{MonthEnd}"></q:QListItem>
        </q:QListItems>
        <q:QListItems x:Key="ranges">
            <q:QListItem  R="{}{AllTime}" D="{}{AllTime}"></q:QListItem>
            <q:QListItem  R="{}{ThisWeek}" D="{}{ThisWeek}"></q:QListItem>
            <q:QListItem  R="{}{ThisMonth}" D="{}{ThisMonth}"></q:QListItem>
            <q:QListItem  R="{}{ThisQuarter}" D="{}{ThisQuarter}"></q:QListItem>
            <q:QListItem  R="{}{ThisYear}" D="{}{ThisYear}"></q:QListItem>

            <q:QListItem  R="{}{WeeKToDate}" D="{}{WeeKToDate}"></q:QListItem>
            <q:QListItem  R="{}{MonthToDate}" D="{}{MonthToDate}"></q:QListItem>
            <q:QListItem  R="{}{YearToDate}" D="{}{YearToDate}"></q:QListItem>
            <q:QListItem  R="{}{InceptionToDate}" D="{}{InceptionToDate}"></q:QListItem>

            <q:QListItem  R="{}{PrevWeek}" D="{}{PrevWeek}"></q:QListItem>
            <q:QListItem  R="{}{Prev2Weeks}" D="{}{Prev2Weeks}"></q:QListItem>
            <q:QListItem  R="{}{PrevMonth}" D="{}{PrevMonth}"></q:QListItem>
            <q:QListItem  R="{}{PrevQuarter}" D="{}{PrevQuarter}"></q:QListItem>
            <q:QListItem  R="{}{PrevYear}" D="{}{PrevYear}"></q:QListItem>

            <q:QListItem  R="{}{NextWeek}" D="{}{NextWeek}"></q:QListItem>
            <q:QListItem  R="{}{NextWeeks}" D="{}{NextWeeks}"></q:QListItem>
            <q:QListItem  R="{}{NextMonth}" D="{}{NextMonth}"></q:QListItem>
            <q:QListItem  R="{}{NextQuarter}" D="{}{NextQuarter}"></q:QListItem>
            <q:QListItem  R="{}{NextYear}" D="{}{NextYear}"></q:QListItem>

            <q:QListItem  R="test" D="{}{}"></q:QListItem>
        </q:QListItems>
        <DataTemplate x:Name="keyWordTemp">
            <TextBlock Text="{Binding D}"></TextBlock>
        </DataTemplate>
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot" Background="White" HorizontalAlignment="Stretch" VerticalAlignment="Top">
        <Grid.RowDefinitions>
            <RowDefinition Height="25"></RowDefinition>
            <RowDefinition Height="210"></RowDefinition>
            <RowDefinition Height="1*"></RowDefinition>
            <RowDefinition Height="25"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="135"></ColumnDefinition>
            <ColumnDefinition Width="210"></ColumnDefinition>
            <ColumnDefinition Width="210"></ColumnDefinition>

        </Grid.ColumnDefinitions>
        <Border Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="3" Style="{StaticResource MainHeaderBorder}">
        </Border>

        <TextBlock Grid.Row="0" Grid.Column="0" Text="Ranges" Style="{StaticResource MainHeaderTextBlockStyle}" HorizontalAlignment="Center"/>
        <TextBlock Grid.Row="0" Grid.Column="1" Text="From" Style="{StaticResource MainHeaderTextBlockStyle}"  HorizontalAlignment="Center"/>
        <TextBlock Grid.Row="0" Grid.Column="2" Text="To" Style="{StaticResource MainHeaderTextBlockStyle}"  HorizontalAlignment="Center"/>


        <telerik:RadCalendar Width="200" Height="200" Grid.Row="1" Grid.Column="1" HorizontalAlignment="Center" SelectedDate="{Binding Tool.LeftValue,Mode=TwoWay}"></telerik:RadCalendar>
        <telerik:RadCalendar Width="200" Height="200" Grid.Row="1" Grid.Column="2" HorizontalAlignment="Center" SelectedDate="{Binding Tool.RightValue,Mode=TwoWay}"></telerik:RadCalendar>
        <ListBox Grid.Row="1" Grid.Column="0" Grid.RowSpan="2" ItemsSource="{StaticResource ranges}" SelectedItem="{Binding Tool.ToolValue,Mode=TwoWay}" ItemTemplate="{StaticResource keyWordTemp}"></ListBox>


        <ListBox Grid.Row="2" Grid.Column="1" ItemsSource="{StaticResource singles}" SelectedItem="{Binding Tool.LeftValue,Mode=TwoWay}" ItemTemplate="{StaticResource keyWordTemp}"></ListBox>
        <ListBox Grid.Row="2" Grid.Column="2" ItemsSource="{StaticResource singles}" SelectedItem="{Binding Tool.RightValue,Mode=TwoWay}" ItemTemplate="{StaticResource keyWordTemp}" ></ListBox>

        <Button Grid.Row="3" Grid.Column="1"  x:Name="ftclear" Command="{Binding Tool.ClearCommand}" CommandParameter="{StaticResource DefaultValue}" >
            <TextBlock Text="Clear"></TextBlock>
        </Button>

    </Grid>
</v:Tool>

Tool.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections;
using Telerik.Windows.Controls;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.Text;
using System.Windows.Controls.Primitives;
using System.Windows.Media.Effects;

namespace RI.View
{
    public class Tool : UserControl
    {
        internal Conditions cond;

        public object SrcObject
        {
            get { return (object)GetValue(SrcObjectProperty); }
            set { SetValue(SrcObjectProperty, value); }
        }

        // Using a DependencyProperty as the backing store for SrcObject.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty SrcObjectProperty =
            DependencyProperty.Register("SrcObject", typeof(object), typeof(Tool), new PropertyMetadata(null));


        public Tool()
        {
            //          InitializeComponent();
            //cond = new Conditions();
            //cond.CollectionChanged += cond_CollectionChanged;
        }

        //void cond_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        //{
        //    UpdateSrcValue();
        //}

        protected void UpdateSrcValue()
        {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < cond.Count; i++)
            {
                if (i > 0)
                {
                    sb.Append(",");
                }
                sb.Append(cond[i].val1);
                if (!String.IsNullOrEmpty(cond[i].val2))
                {
                    sb.Append("..");
                    sb.Append(cond[i].val2);
                }
            }
            ((TextBox)SrcObject).Text = sb.ToString();
        }

        protected void setSrcValue(string s)
        {
            ((TextBox)SrcObject).Text = s;
        }

        protected virtual void ParseExistingValue()
        {
            string val = ((TextBox)SrcObject).Text;
            string[] vals = val.Split(new char[] { ',', '&' });
            foreach (string s in vals)
            {
                Condition c = Condition.Parse(s);
                cond.Add(c);
            }
        }

    }

    internal class Conditions : ObservableCollection<Condition>
    {
    }

    internal class Condition
    {
        public static Condition Parse(string s)
        {
            s = s.Trim();
            Condition c = new Condition();
            if (s.Length > 1 && s[0] == '!')
            {
                c.not = true;
                s = s.Substring(1, s.Length - 1);
            }
            string[] parts = s.Split(new string[] { ".." }, StringSplitOptions.None);
            c.val1 = parts[0];
            if (parts.Length > 1)
            {
                c.val2 = parts[1];
            }
            return c;
        }

        //public String oper = ",";
        public Boolean not = false;
        public string val1;
        public string val2;
    }

}

namespace QISS.Base.DB.QDM
{
    public class QListItem
    {
        private string _R;
        public string R
        {
            get { return _R; }
            set { _R = value; }
        }

        private string _D;
        public string D
        {
            get { return _D; }
            set { _D = value; }
        }
    }

    public class QListItems:List<QListItem>
    {

    }
}

MainPage.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Telerik.Windows.Controls;

namespace CalendarPerformanceTest
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void btn_Click(object sender, RoutedEventArgs e)
        {
            RadWindow w = new RadWindow();
            w.Content = new ToolDate();
            w.Show();
            w.Width = 600;
            w.Height = 600;
        }
    }
}

App.xaml

<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             x:Class="CalendarPerformanceTest.App"
             >
    <Application.Resources>
        <ResourceDictionary>
            <SolidColorBrush x:Key="WhiteSmokeBrush" Color="WhiteSmoke" />
            <LinearGradientBrush x:Key="MainBodyBorderBackGroundBrush" StartPoint=".5,0" EndPoint=".5,1" >
                <GradientStop Color="WhiteSmoke" Offset="0"  />
                <GradientStop Color="Silver" Offset="5" />
                <GradientStop Color="DarkGray" Offset="10" />
            </LinearGradientBrush>

            <LinearGradientBrush x:Key="MainHeaderBorderBackGroundBrush" StartPoint=".5,0" EndPoint=".5,1" >
                <GradientStop Color="#62bbe8" Offset="0" />
                <GradientStop Color="#3baae3" Offset=".5" />
                <GradientStop Color="#6fc0ea" Offset="1" />
            </LinearGradientBrush>

            <Style x:Key="MainBodyBorder" TargetType="Border">
                <Setter Property="CornerRadius" Value="6"/>
                <Setter Property="Padding" Value="6"/>
                <Setter Property="BorderBrush" Value="#2694e8"/>
                <Setter Property="BorderThickness" Value="1"/>
                <Setter Property="Background" Value="WhiteSmoke"/>
            </Style>

            <Style x:Key="MainHeaderBorder" TargetType="Border">
                <Setter Property="CornerRadius" Value="6"/>
                <Setter Property="Padding" Value="2"/>
                <Setter Property="BorderBrush" Value="DimGray"/>
                <Setter Property="BorderThickness" Value="1"/>
                <Setter Property="Background" Value="{StaticResource MainHeaderBorderBackGroundBrush}"/>
            </Style>

            <Style x:Key="MainHeaderTextBlockStyle" TargetType="TextBlock">
                <Setter Property="FontSize" Value="12"/>
                <Setter Property="FontWeight" Value="Bold"/>
                <Setter Property="Margin" Value="5 0 0 0"/>
                <Setter Property="VerticalAlignment" Value="Center"/>
                <Setter Property="HorizontalAlignment" Value="Left"/>
                <Setter Property="Foreground" Value="Snow"/>
            </Style>

            <Style x:Key="MainBodyTextBlockStyle" TargetType="TextBlock">
                <Setter Property="Margin" Value="20 10 0 0"/>
                <Setter Property="FontSize" Value="12"/>
            </Style>
        </ResourceDictionary>
    </Application.Resources>
</Application>

It takes around 2 seconds for this window to pop up for my computer.  Fill tools are used to aid in filling a text box so they need to pop up fast anything over half a second is really too slow.  Any suggestions for performance increase is appreciated.

[Kaloyan]

Hi David Quick,

Can you send us a working project showing the performance hit problem so we can make a deeper investigation and then provide you a work around.

Greetings,
Kaloyan
the Telerik team

[Filipe]

Hi,

I'm experiencing the exact same issue when trying to create a yearly calendar. I tested with the latest trial release to make sure the behavior is still the same.

To reproduce the behavior, try this:

1. Open Visual Studio 2010
2. Create a new Silverlight Application
3. Add references to Telerik Q1 2011 assemblies
4. Add a RadCalendar to MainPage.xaml with this configuration:

<telerik:RadCalendar
         SelectionMode="Multiple"
         Columns="4"
         Rows="3"
         ViewsHeaderVisibility="Visible"
         HeaderVisibility="Visible"
         DisplayDate="2011/01/01"
         IsTodayHighlighted="False" />

Run the application and press the next/previous buttons or navigate to/from Year view. It takes at least 2 seconds on my machine to change the displayed year.

Best Regards,

Filipe

[Kaloyan]

Hello David Quick,

Sorry for being late with our response. We didn't manage to fix the problem in the latest Q1.2011 release as we hade some more critical issues to be done. We will do our best to accomplish the task in the nearest possible time frame. Sorry once again.

Regards,
Kaloyan
the Telerik team