Infragistic zoombar size change default value

Hi Stefan,

i made required modification to your sample(implemented OnXamZoombarZoomChanged,OnXamDataChartWindowRectChanged,OnXamChart_PreviewMouseWheel). and that way i am able to achieve the Synonization and required thumb min/max. the only issue is onload the XAMdDataChartWindowRectangle is not updated. once user click on XamzoomBar : the handler OnXamZoombarZoomChanged is getting called and things are getting corrected.1.Behaviour class 2. ( i have both expected and current image ready with me but your website doesn't provide upload from PC it ask for url:give me a mild ID where i can send these images.)

Important observation: initially this.Chart object is getting null so this.Chart.WindowRectChanged event never getting registered.

1. please find the Behaviour class:

using Infragistics;
using Infragistics.Controls;
using Infragistics.Controls.Charts;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Data;
using System.Windows.Input;
using System.Windows.Interactivity;

namespace AKG4.Forms.Behaviors
{
public class ZoomBarRangeBehaviour :Behavior<XamDataChart>
{

private XamDataChart Chart
{
get
{
return AssociatedObject as XamDataChart;
}
}

public XamZoombar HorizontalZoombar
{
get { return (XamZoombar)GetValue(HorizontalZoombarProperty); }
set { SetValue(HorizontalZoombarProperty, value); }
}

// Using a DependencyProperty as the backing store for HorizontalZoombar. This enables animation, styling, binding, etc...
public static readonly DependencyProperty HorizontalZoombarProperty =
DependencyProperty.Register("HorizontalZoombar", typeof(XamZoombar), typeof(ZoomBarRangeBehaviour), new PropertyMetadata(SetZoombar));

private static void SetZoombar(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
Binding binding = new Binding
{
Source = (obj as ZoomBarRangeBehaviour).Chart,
Path = new PropertyPath("HorizontalZoombar.Range"),
Mode = BindingMode.TwoWay
};
(obj as ZoomBarRangeBehaviour).HorizontalZoombar.SetBinding(XamZoombar.RangeProperty, binding);
(obj as ZoomBarRangeBehaviour).HorizontalZoombar.Range = new Range { Minimum = 0.9, Maximum = 1 };

// detach the old events so we don't leak memory
(obj as ZoomBarRangeBehaviour).DetachEvents();

// attach the new events
(obj as ZoomBarRangeBehaviour).AttachEvents();

}

private void AttachEvents()
{
this.HorizontalZoombar.ZoomChanged += OnXamZoombarZoomChanged;
//this.HorizontalZoombar.ZoomChanging+=HorizontalZoombar_ZoomChanging;
if (this.Chart != null)
this.Chart.WindowRectChanged += OnXamDataChartWindowRectChanged;
}
private void DetachEvents()
{
this.HorizontalZoombar.ZoomChanged -= OnXamZoombarZoomChanged;
//this.HorizontalZoombar.ZoomChanging -= HorizontalZoombar_ZoomChanging;
if(this.Chart!=null)
this.Chart.WindowRectChanged -= OnXamDataChartWindowRectChanged;
}

bool fromMouseWheel = false;
double scaleH = -1;
double scaleV = -1;
double positionH = -1;
double positionV = -1;
public bool IsZoombarChanging;
private void OnXamZoombarZoomChanged(object sender, ZoomChangedEventArgs e)
{
if (this.Chart == null) return;
if (IsZoombarChanging) return;
try
{
IsZoombarChanging = true;
Range zoombarRange = e.NewRange;
HorizontalZoombar.Range = zoombarRange;
this.Chart.WindowRect = new Rect
{
Y = 0,
Height = 1,
X = zoombarRange.Minimum,
Width = (zoombarRange.Maximum - zoombarRange.Minimum)
};

}
finally
{
IsZoombarChanging = false;
}
}

private void OnXamChart_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
fromMouseWheel = true;
scaleH = this.Chart.WindowScaleHorizontal;
scaleV = this.Chart.WindowScaleVertical;
positionH = this.Chart.WindowPositionHorizontal;
positionV = this.Chart.WindowPositionVertical;
}

private void OnXamDataChartWindowRectChanged(object sender, RectChangedEventArgs e)
{
if (IsZoombarChanging) return;
if (fromMouseWheel) return;
try
{
IsZoombarChanging = true;
Range newZoombarRange = new Range
{
Minimum = e.NewRect.X,
Maximum = e.NewRect.X + e.NewRect.Width
};
if (this.HorizontalZoombar != null)
{
this.HorizontalZoombar.Range = newZoombarRange;
}
}
finally
{
IsZoombarChanging = false;
fromMouseWheel = false;
}
}

protected override void OnAttached()
{
base.OnAttached();
}

}