I want to use the WebChart control in combination with a web page that implements the System.Web.UI.ICallbackEventHandler interface. This to avoid page flickering when chart is refreshed (pre-load the chart before refresh the page). Required for this is that the server callback method "public string...

Is it possible to attach an eventhandler to the zoom tool (WebChart, ASP.NET) to the start of the zooming event (user draws a rectangle with the mouse) ??

Hello,

Is it possible to add eventhandlers to events raised when start zooming and end zooming (or drawing zoom rectangle?)?

Hello, I use the WebChart control in an ASP.NET AJAX UpdatePanel that is periodically updated with a timer (set as a trigger for the AJAX UpdatePanel). The problem I face: If I started a zoom action (mouseDown and draw the area to zoom), and the UpdatePanel receives a trigger (from the timer), the s...

Thanks, now I have the zoom functionality I wanted!! and it works perfect!

Thanks, it solved my problem!!

Hello marcoIpcos, Please add WebChart1.AutoPostBack = true in your Page_Load specifically after if(Session["ch1]==null) , and remove DeterminePostBackMode() to SetCurrentZoom() function, see next code changes: Private void Page_Load(object sender, System.EventArgs e) { System.IO.MemoryStream tmpCha...

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If the user zoomed in or scrolled in the TeeChart WebComponent in ASP.NET, How can I:
- Make sure the ScrollWindow/ZoomWindow displayed to the user is the same after de page is refreshed (because of a page refresh) ??

The help describes the function SetCurrentZoom(System.Web.HttpRequest, System.Collections.ArrayList, System.Collections.Specialized.NameValueCollection) to use if there are post elements (eg. Button or DropDownList) on the page that might send a non-zoom page request. This function is not working in...

I have a problem extending the data series (FastTrend). When I extend the data in Chart.Series[0] (is a FastTrend object, I see the axis scale to display the new value, but the new point in the chart is not connected with a line to the old points (that were already present in the Series[0]). The Tee...