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schedule view not compatible with windows phone 7.1
I am building an application in Windows Phone 7.1, which uses Silverlight 4 controls.
Now I need to use RADScheduleView control of telerik, which needs Advanced version of Silverlight (5.5).
I have Installed Silverlight 5.5 but not able to add its reference in my Windows Phone express edition 7.1 OS
ScheduleView
Yana
Telerik team
 answered on 13 Jun 2012
1 answer
104 views
Map is stalling causing update glitches.
I am using the Telerik map, I am driving the map with custom controls, that I have on a timer update function
When I move the map struggles to catch up & becomes quite jerky. I need to drive the map this way I don't have a choice in this. Using the Telerik controls to drive it is not an option unfortunately.

From what I can tell it looks like the map or the provider is blocking the UI thread which causes the stall.
This bug is more apparent in high resolutions.

Below is the code I am using to generate the error (I know the code isn't perfect but it highlights the bug)

turn these defines on to change timer methods (1 at a time please) or turn them both off to use the onIdle event
#define DISPACTTIMER
#define THREADTIMER

<Window x:Class="WpfRadMap.MainWindow"
        Title="MainWindow" Height="1080" Width="1900" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" ResizeMode="NoResize" Activated="Window_Activated">
  <Grid>
    <telerik:RadMap Panel.ZIndex="1" HorizontalAlignment="Stretch" Name="radMap1" VerticalAlignment="Stretch" Center="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Mode=TwoWay, Path=MapLocation}" ZoomChanged="radMap1_ZoomChanged"/>
    <Canvas Panel.ZIndex="2" x:Name="gizmoPanel" Visibility="Visible" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" RenderTransformOrigin="0.5,0.5" >
      <Canvas.RenderTransform>
        <RotateTransform x:Name="GizmoRotate" Angle="0" />
      </Canvas.RenderTransform>
      <Line Stroke="Red"
                StrokeThickness="3"
                ClipToBounds="True"
                X1="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoX1}"
                X2="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoX1}"
                Y1="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoY1}"
                Y2="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoY2}"
                Visibility="Visible"
                IsHitTestVisible="False"
                >
        <Line.Effect>
          <DropShadowEffect BlurRadius="5" ShadowDepth="0" />
        </Line.Effect>
      </Line>
 
      <!-- Small Line 1 -->
      <Line Stroke="Red"
                StrokeThickness="3"
                ClipToBounds="True"
                X1="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoX1}"
                X2="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoX2}"
                Y1="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoY2}"
                Y2="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoY3}"
                Visibility="Visible"
                IsHitTestVisible="False"
                >
        <Line.Effect>
          <DropShadowEffect BlurRadius="5" ShadowDepth="0" />
        </Line.Effect>
      </Line>
 
      <!-- Small Line 2 -->
      <Line Stroke="Red"
                StrokeThickness="3"
                ClipToBounds="True"
                X1="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoX1}"
                X2="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoX3}"
                Y1="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoY2}"
                Y2="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=GizmoY3}"
                Visibility="Visible"
                IsHitTestVisible="False"
                >
        <Line.Effect>
          <DropShadowEffect BlurRadius="5" ShadowDepth="0" />
        </Line.Effect>
      </Line>
    </Canvas>
    <Button Panel.ZIndex="3" Content="Rotate Clockwise" Height="39" Name="button1" Width="99" Click="button1_Click" Margin="1690,12,39,980" />
    <Button Panel.ZIndex="3" Content="Rotate AntiClockwise" Height="39" Name="button2" Width="119" Click="button2_Click" Margin="1680,57,28,935" />
    <Label Panel.ZIndex="3" Margin="1670,100, 0,910" Content="[W] to move along arrow" Height="28" Name="label1" Width="180" FontWeight="Bold" />
    <Label Panel.ZIndex="3" Margin="1670,120, 0,890" Content="[S] to move opposite to arrow" Height="28" Name="label2" Width="180" FontWeight="Bold" />
    <Label Panel.ZIndex="3" Margin="1670,140, 0,870" Content="[A] to move left of arrow" Height="28" Name="label3" Width="180" FontWeight="Bold" />
    <Label Panel.ZIndex="3" Margin="1670,160, 0,850" Content="[D] to move right of arrow" Height="28" Name="label4" Width="180" FontWeight="Bold" />
 
    <Label Panel.ZIndex="3" Margin="0,10, 1670,980" Content="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=FastestTime}" Height="28" Name="lblMinSpeed" Width="180" FontWeight="Bold" />
    <Label Panel.ZIndex="3" Margin="0,40, 1670,950" Content="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=SlowestTime}" Height="28" Name="lblMaxSpeed" Width="180" FontWeight="Bold" />
    <Label Panel.ZIndex="3" Margin="0,70, 1670,920" Content="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=AverageTime}" Height="28" Name="lblAvgSpeed" Width="180" FontWeight="Bold" />
 
    <Label Panel.ZIndex="3" Margin="0,110, 1670,880" Content="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=FastestUpdateTime}" Height="28" Name="lblMinUpdate" Width="180" FontWeight="Bold" />
    <Label Panel.ZIndex="3" Margin="0,140, 1670,850" Content="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=SlowestUpdateTime}" Height="28" Name="lblMaxUpdate" Width="180" FontWeight="Bold" />
    <Label Panel.ZIndex="3" Margin="0,170, 1670,820" Content="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=AverageUpdateTime}" Height="28" Name="lblAvgUpdate" Width="180" FontWeight="Bold" />
  </Grid>
</Window>

#define QUERY_PERFORMANCE
//#define DISPACTTIMER
//#define THREADTIMER
 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
using System.Timers;
using System.ComponentModel;
 
 
 
namespace WpfRadMap
{
  /// <summary>
  /// Interaction logic for MainWindow.xaml
  /// </summary>
  public partial class MainWindow : Window, INotifyPropertyChanged
  {
    Telerik.Windows.Controls.Map.Location m_location;
 
    double width = 1900.0;
    double height = 1080.0;
 
    private double gizmoX1;
    private double gizmoX2;
    private double gizmoX3;
 
    private double gizmoY1;
    private double gizmoY2;
    private double gizmoY3;
 
    private RotateTransform longLatRotate;
    private double framesPerSecond = 60.0;
 
#if DISPACTTIMER
    DispatcherTimer m_updateTimer;
#elif THREADTIMER
    Timer m_updateTimer;
#endif
 
 
    public MainWindow()
    {
      gizmoX1 = width * 0.5;
      gizmoX2 = width * 0.485;
      gizmoX3 = width * 0.515;
 
      gizmoY1 = height * 0.5;
      gizmoY2 = height * 0.45;
      gizmoY3 = height * 0.475;
      longLatRotate = new RotateTransform();
      longLatRotate.Angle = 0.0;
      m_location = new Telerik.Windows.Controls.Map.Location();
 
 
      InitializeComponent();
      const string bingKey = "";
      if (bingKey.Length > 0)
      {
        Telerik.Windows.Controls.Map.BingMapProvider bingProvider = new Telerik.Windows.Controls.Map.BingMapProvider(Telerik.Windows.Controls.Map.MapMode.Aerial, true, bingKey);
        bingProvider.IsTileCachingEnabled = true;
        bingProvider.IsLabelVisible = true;
        radMap1.Provider = bingProvider;
        SetLabelsFontColor(Brushes.White);
      }
      else
      {
        Telerik.Windows.Controls.Map.OpenStreetMapProvider openProvider = new Telerik.Windows.Controls.Map.OpenStreetMapProvider();
        openProvider.IsTileCachingEnabled = true;
        radMap1.Provider = openProvider;
      }
 
      radMap1.ZoomLevel = 19;
      m_location.Latitude = 48.856941702106354;
      m_location.Longitude = 2.3383069038354383;
      MapLocation = m_location;
 
#if DISPACTTIMER
      m_updateTimer = new DispatcherTimer();
      m_updateTimer.Tick += new EventHandler(m_updateTimer_Tick);
      m_updateTimer.Interval = TimeSpan.FromSeconds(1.0/framesPerSecond);
#elif THREADTIMER
      m_updateTimer = new Timer();
      m_updateTimer.Elapsed += new ElapsedEventHandler(m_updateTimer_Tick);
      m_updateTimer.Interval = (1.0 / framesPerSecond) * 100;
      m_updateTimer.Enabled = false;
#else
      System.Windows.Interop.ComponentDispatcher.ThreadIdle += new System.EventHandler(ComponentDispatcher_ThreadIdle);
#endif
 
      profileTimer = System.Diagnostics.Stopwatch.StartNew();
    }
 
 
    public Telerik.Windows.Controls.Map.Location MapLocation
    {
      get { return m_location; }
      set { m_location = value; RaisePropertyChanged("MapLocation");
      }
    }
 
    double m_mapHeight = 0.0001;
    public double MapHeight
    {
      get {return m_mapHeight;}
      set {m_mapHeight = value; RaisePropertyChanged("MapHeight");}
    }
 
    private void radMap1_ZoomChanged(object sender, EventArgs e)
    {
      MapHeight = radMap1.GeographicalBounds.Height;
    }
 
 
    readonly Queue<long> m_frameTicks = new Queue<long>();
    long m_slowest = long.MinValue;
    long m_fastest = long.MaxValue;
    long m_avg = 0;
 
    public string AverageTime
    {
      get { return "Avg: " + m_avg + "us"; }
    }
 
 
    public string SlowestTime
    {
      get { return "Slowest: " + m_slowest + "us"; }
    }
 
 
    public string FastestTime
    {
      get { return "Fastest: " + m_fastest + "us"; }
    }
 
    readonly Queue<long> m_frameUpdateTicks = new Queue<long>();
    long m_slowestUpdate = long.MinValue;
    long m_fastestUpdate = long.MaxValue;
    long m_avgUpdate = 0;
    System.Diagnostics.Stopwatch profileTimer;
 
    public string AverageUpdateTime
    {
      get { return "AvgUpdate: " + m_avgUpdate + "ms"; }
    }
 
 
    public string SlowestUpdateTime
    {
      get { return "SlowestUpdate: " + m_slowestUpdate + "ms"; }
    }
 
 
    public string FastestUpdateTime
    {
      get { return "FastestUpdate: " + m_fastestUpdate + "ms"; }
    }
 
    protected void CalculatePerformance(long a_currentTick, Queue<long> a_avgTicks, ref long a_slowestTick, ref long a_fastestTick, ref long a_avgTick)
    {
      a_avgTicks.Enqueue(a_currentTick);
      if (a_avgTicks.Count > 60)
      {
        a_avgTicks.Dequeue();
      }
 
      long slowest = a_currentTick;
      long fastest = a_currentTick;
 
      long total = 0;
      foreach (long time in a_avgTicks)
      {
        total += time;
 
        slowest = Math.Max(slowest, time);
        fastest = Math.Min(fastest, time);
      }
 
      a_avgTick = total / a_avgTicks.Count;
      a_slowestTick = slowest;
      a_fastestTick = fastest;
    }
 
 
#if DISPACTTIMER
    void m_updateTimer_Tick(object sender, EventArgs e)
#elif THREADTIMER
    void m_updateTimer_Tick(object sender, ElapsedEventArgs e)
#else
    void ComponentDispatcher_ThreadIdle(object sender, EventArgs e)
#endif
    {
      long elapsedTime = profileTimer.ElapsedTicks;
      long elapsedMilliSeconds = System.Convert.ToInt64((System.Convert.ToDouble(elapsedTime) / System.Convert.ToDouble(System.Diagnostics.Stopwatch.Frequency)) * 1000);
 
//       if (elapsedMilliSeconds < (1.0/framesPerSecond)*1000)
//       {
//         return;
//       }
 
      CalculatePerformance(elapsedMilliSeconds, m_frameUpdateTicks, ref m_slowestUpdate, ref m_fastestUpdate, ref m_avgUpdate);
      RaisePropertyChanged("SlowestUpdateTime");
      RaisePropertyChanged("FastestUpdateTime");
      RaisePropertyChanged("AverageUpdateTime");
      profileTimer.Restart();
 
      double tearRepair = 1.0;
      if (elapsedMilliSeconds > 0)
      {
        tearRepair = elapsedMilliSeconds / framesPerSecond;
      }
 
      double speed = 2.0;
      double latitude = m_location.Latitude;
      double longitude = m_location.Longitude;
#if THREADTIMER 
      Point stepDir = new Point(0.0, (MapHeight/(speed * framesPerSecond))*tearRepair);
      Point dir = stepDir; //longLatRotate.Transform(stepDir);
      latitude += dir.Y;
      longitude -= dir.X;
#else
#if DISPACTTIMER
      Point stepDir = new Point(0.0, (MapHeight/(speed * framesPerSecond))*tearRepair);
#else
      Point stepDir = new Point(0.0, (MapHeight / (speed * framesPerSecond)) * tearRepair);
#endif
      Point dir = longLatRotate.Transform(stepDir);
      if ((Keyboard.GetKeyStates(Key.W) & KeyStates.Down) > 0)
      {
        latitude += dir.Y;
        longitude -= dir.X;
      }
      if ((Keyboard.GetKeyStates(Key.S) & KeyStates.Down) > 0)
      {
        latitude -= dir.Y;
        longitude += dir.X;
      }
      if ((Keyboard.GetKeyStates(Key.A) & KeyStates.Down) > 0)
      {
        latitude -= dir.X;
        longitude -= dir.Y;
      }
      if ((Keyboard.GetKeyStates(Key.D) & KeyStates.Down) > 0)
      {
        latitude += dir.X;
        longitude += dir.Y;
      }
#endif
 
      while (latitude>360)
      {
        latitude-=360;
      }
      while(latitude < 0)
      {
        latitude += 360;
      }
      while(longitude > 360)
      {
        longitude -= 360;
      }
      while(longitude < 0)
      {
        longitude += 360;
      }
      m_location.Latitude = latitude;
      m_location.Longitude = longitude;
 
      RaisePropertyChanged("MapLocation");
 
      elapsedTime = profileTimer.ElapsedTicks;
      long elapsedMicroSeconds = System.Convert.ToInt64((System.Convert.ToDouble(elapsedTime) / System.Convert.ToDouble(System.Diagnostics.Stopwatch.Frequency))*1000000);
 
      CalculatePerformance(elapsedMicroSeconds, m_frameTicks, ref m_slowest, ref m_fastest, ref m_avg);
      RaisePropertyChanged("SlowestTime");
      RaisePropertyChanged("FastestTime");
      RaisePropertyChanged("AverageTime");
    }
 
 
    public double GizmoX1
    {
      get { return gizmoX1; }
      set { gizmoX1 = value; }
    }
 
    public double GizmoX2
    {
      get { return gizmoX2; }
      set { gizmoX2 = value; }
    }
 
    public double GizmoX3
    {
      get { return gizmoX3; }
      set { gizmoX3 = value; }
    }
    public double GizmoY1
    {
      get { return gizmoY1; }
      set { gizmoY1 = value; }
    }
 
    public double GizmoY2
    {
      get { return gizmoY2; }
      set { gizmoY2 = value; }
    }
 
    public double GizmoY3
    {
      get { return gizmoY3; }
      set { gizmoY3 = value; }
    }
 
    private void button2_Click(object sender, RoutedEventArgs e)
    {
      longLatRotate.Angle = GizmoRotate.Angle = (GizmoRotate.Angle + 15) % 360;
    }
 
    private void button1_Click(object sender, RoutedEventArgs e)
    {
      longLatRotate.Angle = GizmoRotate.Angle = (GizmoRotate.Angle - 15);
      if (GizmoRotate.Angle == 0)
      {
        longLatRotate.Angle = GizmoRotate.Angle = 360;
      }
    }
 
    void SetLabelsFontColor(Brush a_color)
    {
      lblMinUpdate.Foreground = a_color;
      lblMaxUpdate.Foreground = a_color;
      lblAvgUpdate.Foreground = a_color;
 
      lblMinSpeed.Foreground = a_color;
      lblMaxSpeed.Foreground = a_color;
      lblAvgSpeed.Foreground = a_color;
 
      label1.Foreground = a_color;
      label2.Foreground = a_color;
      label3.Foreground = a_color;
      label4.Foreground = a_color;
    }
 
 
 
    /// <summary>
    /// Raises this object's PropertyChanged event.
    /// </summary>
    /// <param name="propertyName">The property that has a new value.</param>
    protected void RaisePropertyChanged(string propertyName)
    {
      this.VerifyPropertyName(propertyName);
 
      PropertyChangedEventHandler handler = this.PropertyChanged;
      if (handler != null)
      {
        PropertyChangedEventArgs e = new PropertyChangedEventArgs(propertyName);
        handler(this, e);
      }
    }
 
 
    /// <summary>
    /// Warns the developer if this object does not have
    /// a public property with the specified name. This
    /// method does not exist in a Release build.
    /// </summary>
    public void VerifyPropertyName(string propertyName)
    {
      // If you raise PropertyChanged and do not specify a property name,
      // all properties on the object are considered to be changed by the binding system.
      if (String.IsNullOrEmpty(propertyName))
      {
        return;
      }
 
      // Verify that the property name matches a real, 
      // public, instance property on this object.
      if (TypeDescriptor.GetProperties(this)[propertyName] == null)
      {
        string msg = "Invalid property name: " + propertyName;
 
        if (this.ThrowOnInvalidPropertyName)
        {
          throw new ArgumentException(msg);
        }
      }
    }
 
    /// <summary>
    /// Returns whether an exception is thrown, or if a Debug.Fail() is used
    /// when an invalid property name is passed to the VerifyPropertyName method.
    /// The default value is false, but subclasses used by unit tests might
    /// override this property's getter to return true.
    /// </summary>
    protected virtual bool ThrowOnInvalidPropertyName { get; private set; }
 
 
    /// <summary>
    /// Raised when a property on this object has a new value.
    /// </summary>
    public event PropertyChangedEventHandler PropertyChanged;
 
    private void Window_Activated(object sender, EventArgs e)
    {
      MapHeight = radMap1.GeographicalBounds.Height;
#if DISPACTTIMER
      m_updateTimer.Start();
#elif THREADTIMER
      m_updateTimer.Enabled = true;
#endif
    }
 
  }
}

 
Map
Andrey
Telerik team
 answered on 13 Jun 2012
1 answer
84 views
Escape does not work properly for Rad TreeView
We have used Rad TreeViewControl in our WPF application. When we press 'Escape' key, sometimes it does not reset the value and retains the value entered.
TreeView
Tina Stancheva
Telerik team
 answered on 13 Jun 2012
2 answers
152 views
Docking problem on Citrix
Hi, one of our customers are getting exceptions when they are docking toolwindows. The exception occures when dragging a window to one of the arrows in the "diamond". They are running the application on a 2003 windows server with Citrix. I'm guessing they are running into a Citrix or network issue as this behavior is not reproducable in test environments.  The exception beeing thrown is:

Versjon: 2012.2.101.15, OS: Microsoft Windows NT 5.2.3790 Service Pack 2 64-bits: False

Exception: Not enough storage is available to process this command

 

Telerik.Windows.Controls.InternalWindow.Standard.NativeMethods

CreateRoundRectRgn

 

 

 

Source: Telerik.Windows.Controls

 

Target: IntPtr CreateRoundRectRgn(Int32, Int32, Int32, Int32, Int32, Int32)

 

Stacktrace:    at Telerik.Windows.Controls.InternalWindow.Standard.NativeMethods.CreateRoundRectRgn(Int32 nLeftRect, Int32 nTopRect, Int32 nRightRect, Int32 nBottomRect, Int32 nWidthEllipse, Int32 nHeightEllipse)

   at Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.RoundNonTransparentWindowCorners(IntPtr hwnd)

   at Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.HandlePositionChanged(IntPtr hwnd, IntPtr wParam, IntPtr lParam, Boolean& handled)

   at Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

   at System.Windows.Interop.HwndSource.PublicHooksFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)

   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

Any suggestions on what is going on here?

Best regards
Arnstein

Docking
Konstantina
Telerik team
 answered on 13 Jun 2012
1 answer
99 views
Label Count on X Axis
Hi,
I am getting overlapped x axis labels due to space constraints. I want to restrict the label count to a maximum limit. How can i achieve that?
 
Thanks
Dhruv
  
Chart
Rosko
Telerik team
 answered on 13 Jun 2012
0 answers
37 views
XamlParseException after uprading from Q2 2010 to Q1 2012
After I upgraded the Telerik controls from Q2 2010 to Q1 2012 I get XAmlParse Exception when I try to run my application.
What could be the issue?
General Discussions
Aracna
Top achievements
Rank 1
 asked on 13 Jun 2012
1 answer
131 views
Add Record NullReferenceException
Hi

I am trying to add a new record to a grid using the inbuilt ShowInsertRow. When I add the record I get binding errors and an exception A first chance exception of type 'System.NullReferenceException' occurred in Telerik.Windows.Data.dll

If I continue through the errors it adds the record to the grid correctly.

The grid is bound to a ObservableCollection in the view model

<telerik:RadGridView Grid.Row="2" x:Name="SpatialDataLocations"
                                        ItemsSource="{Binding SpatialDataLocations}"
                                        ShowGroupPanel="False"
                                        ShowInsertRow="True"
                                        IsSynchronizedWithCurrentItem="True"
                                        VerticalAlignment="Stretch"
                                        HorizontalAlignment="Stretch"
                                        AutoGenerateColumns="False"
                                        CanUserInsertRows="True">
                       <telerik:RadGridView.Columns>
                           <telerik:GridViewDataColumn Header="Name"
                                                       DataMemberBinding="{Binding Name, Mode=TwoWay}" />
                           <telerik:GridViewDataColumn Header="Path"
                                                       DataMemberBinding="{Binding Path, Mode=TwoWay}" />
                       </telerik:RadGridView.Columns>
                   </telerik:RadGridView>


I get two exceptions one for each column. The Call Stack Location is Telerik.Windows.Data.ObjectDataBinder.GetValue(Object bindingSource, stringPropertyPath)

The binding source is null, is this the problem? If so how do I deal with this?

Thanks for you help

Regards

Murray
GridView
Murray
Top achievements
Rank 1
 answered on 13 Jun 2012
0 answers
102 views
Adding an aggregate function to numeric columns
Hi,
I have a generic grid which takes the source from a stored procedure. I like to add an aggregate function for numeric columns only. How do I do that? A combobox column could have a numeric values in its underlying data which I don't want.

Any ideas would be appreciated.
GridView
Oliver
Top achievements
Rank 1
 asked on 13 Jun 2012
2 answers
199 views
Edit Cell with Changes in ViewModel
Hi,

I have a RadGridView that has several columns with readonly set to false (ie. these can be edited). Predictably, when I edit a particular cell, the changes are changed in the relevant row in my Collection in my viewmodel when the user presses enter or clicks somewhere else.

When a change is made, I update my database.There is one or two checks I make and then the database update call itself could throw an exception so I also have a catch that reverts the values back to the original values (using e.OldValues).

Currently, similar to the example provided by Veselin in this thread, I use the RowEditEnded event handler. However, I would like to have all this logic in my ViewModel. What are my options? Do I have any? Ofcourse examples are a big help.

Thanks
GridView
Peter
Top achievements
Rank 1
 answered on 12 Jun 2012
0 answers
135 views
Virtualization Issues
Hi telerk,

I have a table Customers which has 80000 records and my project use a grid to show them(not use Datapager). It can be showed correctly, but it load all data into memory and takes about 150 MB! I heard that RadGridView support data virtualization if its container like grid which have a fixed height.  I make a sample project to verify this,  but it still loaded all data and take amount memory.
How I can do this? Because I can not open the UIVirtulization sample on your WPF samples, Could you send me a sample project for this? Thanks very much
this is  MainWindow code:
<Grid>
       <Grid.RowDefinitions>
           <RowDefinition Height="500"/>
           <RowDefinition Height="50" />
       </Grid.RowDefinitions>
       <telerik:RadGridView ItemsSource="{Binding MyCollection}"  AutoGenerateColumns="False"
                         >
           <telerik:RadGridView.Columns>
               
               <telerik:GridViewDataColumn Header="CustommerNumber" DataMemberBinding="{Binding CustomerNumber}" IsGroupable="False" IsFilterable="False" />
               <telerik:GridViewDataColumn Header="CompanyName" DataMemberBinding="{Binding CompanyName}" IsSortable="False" />
               <telerik:GridViewDataColumn Header="Address" DataMemberBinding="{Binding Address}" />
               <telerik:GridViewDataColumn Header="PoBox" DataMemberBinding="{Binding POBox}" />
               <telerik:GridViewDataColumn Header="PostalCode" DataMemberBinding="{Binding PostalCode}" />
               <telerik:GridViewDataColumn Header="ContactName" DataMemberBinding="{Binding ContactName}" />
               <telerik:GridViewDataColumn Header="Phone" DataMemberBinding="{Binding Phone}" />
               <telerik:GridViewDataColumn Header="Fax" DataMemberBinding="{Binding Fax}" />
               <telerik:GridViewDataColumn Header="Country" DataMemberBinding="{Binding Country}" />
               <telerik:GridViewDataColumn Header="Mobile" DataMemberBinding="{Binding Mobile}" />
           </telerik:RadGridView.Columns>
       </telerik:RadGridView>
       <ScrollViewer x:Name="LogScrollViewer" VerticalAlignment="Stretch" Grid.Row="1" >
           <!--<Button Click="Button_Click" Content="Load"/>-->
           <TextBox x:Name="tbMemory" Width="200" Height="30"></TextBox>
           <!--<TextBlock x:Name="Log" TextWrapping="Wrap" FontSize="10" />-->
       </ScrollViewer>
 
   </Grid>
public MainWindow()
       {
           //MessageBox.Show("loading main window");
 
           InitializeComponent();
           DispatcherTimer timer = new DispatcherTimer();
           timer.Interval = new TimeSpan(0, 0, 1);
           timer.Tick += timer_Tick;
           timer.Start();
           //MessageBox.Show("2");
           this.DataContext = new MyViewModel();
            
       }


this is MyViewModel code:
class MyViewModel : INotifyPropertyChanged
    {
         #region INotifyPropertyChanged Members
 
        public event PropertyChangedEventHandler PropertyChanged;
 
        protected void OnPropertyChanged(string propertyName)
        {
                         
            PropertyChangedEventHandler handler = PropertyChanged;
 
            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }
 
        #endregion
 
        private RXOfficeEntities context = null;
 
        private ObservableCollection<Customer> _MyCollection = null;
        public ObservableCollection<Customer> MyCollection
        {
            get { return _MyCollection; }
            set { _MyCollection = value; OnPropertyChanged("MyCollection"); }
        }
         
        public MyViewModel()
        {
            context = new RXOfficeEntities();
            MyCollection = new ObservableCollection<Customer>(context.Customers);
        }



GridView
Deng
Top achievements
Rank 1
 asked on 12 Jun 2012
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