private Bitmap RenderGaugeControl(ASPxGaugeControl gauge)
{
using (var stream = new MemoryStream())
{
gauge.ExportToImage(stream, System.Drawing.Imaging.ImageFormat.Png);
return(new Bitmap(stream));
}
}
public ActionResult RenderGauge(float param)
{
ASPxGaugeControl ctrl = new ASPxGaugeControl();
ctrl.RestoreLayoutFromXml(Server.MapPath("~/App_Data/gauge.xml"));
(ctrl.Gauges["myGauge"] as CircularGauge).Scales["myScale"].Value = param;
MemoryStream stream = new MemoryStream();
ctrl.ExportToImage(stream, ImageFormat.Png);
stream.Seek(0, SeekOrigin.Begin);
return(File(stream, "image/png"));
}
