Chart manual output in UI for ASP.NET AJAX Chart (Obsolete)

Rac

3 posts

Member since:
Dec 2005

Posted 19 Jun 2008 Link to this post

Please follow the code below.
I'm trying to generate a chart using the WebMethod and try to send the response (either the whole rendered output of RadChart or just the ChartImage.axd url) as a repsonse in an Ajax method.

How can I achieve? Or is this undoable?

    
            [System.Web.Services.WebMethod()]  
        
                public static string GetChart1()  
        
                {  
        
                    Telerik.Web.UI.RadChart chart = new Telerik.Web.UI.RadChart();  
        
                    chart.ChartTitle.TextBlock.Text = "My title";  
        
                    chart.DefaultType = ChartSeriesType.Line;  
        
                    chart.Appearance.ImageQuality = Telerik.Charting.Styles.ImageQuality.HighQuality;  
        
                    ChartSeries data1 = new ChartSeries("Page Views", ChartSeriesType.Line);  
        
                    data1.AddItem(100);  
        
                    data1.AddItem(25);  
        
                    data1.AddItem(500);  
        
                    data1.AddItem(1000);  
        
                    data1.AddItem(5000);  
        
                    ChartSeries data2 = new ChartSeries("Hits", ChartSeriesType.Line);  
        
                    data2.AddItem(50);  
        
                    data2.AddItem(100);  
        
                    data2.AddItem(300);  
        
                    data2.AddItem(2000);  
        
                    data2.AddItem(4000);  
        
                    chart.Series.Add(data1);  
        
                    chart.Series.Add(data2);  
        
                    //determine the output  
        
                }

    
            <script type="text/javascript">  
        
                    function CreateChart1()  
        
                    {  
        
                        PageMethods.GetChart1(Chart1Render, OnFailure);  
        
                    }  
        
                  function Chart1Render(res)  
        
                  {  
        
                    $get("chart1").innerHTML = res;  
        
                  }  
        
                  function OnFailure(res)  
        
                  {  
        
                    alert(res);  
        
                  }  
        
                </script>

Giuseppe

Admin

2363 posts

Posted 23 Jun 2008 Link to this post

Hello Rac,

You cannot get the rendered output of the RadChart control, nor the ChartImage.axd url like this. You can still use the RadChart.Save(...) method API to save the image file on the server and then serve it via your own custom HttpHandler to the client-side e.g. from the page method you will need to return your custom HttpHandler url that points to the saved image on the server.

Regards,
Manuel
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

Rac