Mathematica Graphics output in an ASP.NET WebApplication II

*To*: mathgroup at smc.vnet.net*Subject*: [mg54685] Mathematica Graphics output in an ASP.NET WebApplication II*From*: "Javier Chicote" <goraperas at hotmail.com>*Date*: Sun, 27 Feb 2005 01:29:09 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Hi, I would like to place the Mathematica Graphics output in an ASP.NET WebApplication using Wolfram.NETLink referente, like in the example of C:\...\Mathematica\5.0\AddOns\NETLink\Examples\Part2\MathKernelApp. First of all, I tried to use the mathKernel.Graphics property to get the image from the Mathematica graphics output during the last call to mathKernel.Compute(). The problem is that in WebForms I cannot use System.Windows.Forms.PictureBox that I can use in Windows, so I need to refer a URL for the System.Web.UI.WebControls.Image when I only have a System.Drawing.Image object. Then, I check out the possibilies proposed in Wolfram MathGroup: How to give back to an image using "Net/Link" and "asp.net"? http://forums.wolfram.com/mathgroup/archive/2004/Mar/msg00143.html how to save a mathematica-made imagebox.image as jpg, gif, bmp in c#/.netlink? http://forums.wolfram.com/mathgroup/archive/2004/May/msg00087.html Mathematica Graphics output in an ASP.NET WebApplication http://forums.wolfram.com/mathgroup/archive/2005/Jan/msg00238.html Now I have 2 WebForms, but I still haven't found the solution to my problem, althought I can see the graphic in certain cases. ---------------------------------------------------------------------------- In WebForm1.aspx I define the image: HTML: <IMG id="Img1" style="Z-INDEX: 116; LEFT: 496px; POSITION: absolute; TOP: 16px" height="200" src="Graphics.aspx" width="200" runat="server"></form> Graphics.aspx is the WebForm that I use as an image: HTML: <%@ Page language="c#" Codebehind="Graphics.aspx.cs" AutoEventWireup="false" Inherits="MathKernelAppWeb.Graphics" EnableSessionState="False" enableViewState="False" contentType="image/jpeg"%> Code: protected string input; protected System.Drawing.Image image; private void Page_Load(object sender, System.EventArgs e) { input = "Plot3D[Sin[x y], {x, -Pi, Pi}, {y, 0 ,10}]"; //1 image = WebForm1.mathKernel.Link.EvaluateToImage(input,200,200);//2 image.Save(Response.OutputStream, ImageFormat.Jpeg); } ---------------------------------------------------------------------------- The previos code works, but I have two problems: 1) It is supposed that the application runs in WebForm1, so I need to pass the input string from WebForm1 to Grapthics, and I don't know how to do this. 2) I would like to use the mathKernel.Compute() method and the the mathKernel.Graphics[0] property instead of mathKernel.Link.EvaluateToImage(), it's supossed that they do the same task but it doesn't work if I do this: WebForm1.mathKernel.Compute(input); image = WebForm1.mathKernel.Graphics[0]; or this: Bitmap bmp = new Bitmap(WebForm1.mathKernel.Graphics[0]); image = (System.Drawing.Image) bmp; In the explanation that Todd Gayley gives in of the articles above says that maybe it could be a bug in Mathematica. If so, I would really appreciate if you could inform me if it's solved in Mathematica 5.1 or newer versions. Thanks, Javier Chicote