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MathGroup Archive 2005

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Re: Setting the ResultFormat in a ASP.NET WebApplication.

  • To: mathgroup at
  • Subject: [mg54977] Re: Setting the ResultFormat in a ASP.NET WebApplication.
  • From: "Javier Chicote" <goraperas at>
  • Date: Tue, 8 Mar 2005 05:04:32 -0500 (EST)
  • References: <d0e6mf$orp$>
  • Sender: owner-wri-mathgroup at

Hi again,

I've been trying the different types of ResultFormat. I'm interested to show
in my application the result of a computation in a smart way, rather than
the string that I get when the ResultFormatType is OutputForm.

I looked at the documentation and saw that the mathKernel.result is a string
when the ResultFormat is InputForm, OutputForm or MahML, a Image when the
ResultFormat is StandardForm or TraditionalForm and a Expr when the
ResultFormat is Expr. However, I got some errors when I'm using these types:

1) OutputForm is the default, and it worked OK.

2) InputForm and Expr worked OK too, but it is not exactly what I am looking

3) With MathML, I obtanined an error here:
        Global.mathKernel.ResultFormat =
        Global.mathKernel.Compute("2+3"); //ERROR

4) With StandardForm or TraditionalForm I cannot see the image in the
WebApplication if I take the following steps:

* On WebForm1 HTML code:
        <IMG id="resultsImage" style="Z-INDEX: 102; LEFT: 24px; WIDTH:
360px; POSITION: absolute; TOP: 312px; HEIGHT: 88px" height="88" alt=""
src="Results.aspx" width="360" runat="server">

* Results.aspx. code:
        <%@ Page language="c#" Codebehind="Results.aspx.cs"
AutoEventWireup="false" Inherits="MathKernelAppWeb.Results"
enableViewState="False" contentType="image/jpeg"%>

* Results.aspx.cs code:
        protected System.Drawing.Image image;
        private void Page_Load(object sender, System.EventArgs e) {
               image = (System.Drawing.Image) Global.mathKernel.Result;
                image.Save(Response.OutputStream, ImageFormat.Jpeg);

Thank you very much for your time.

Best regards,

Javier Chicote

"Todd Gayley" <tgayley at> escribió en el mensaje
news:d0e6mf$orp$1 at
> At 12:34 AM 3/5/2005, Javier Chicote wrote:
> >Hi,
> >
> >The ResultFormat of the MathKernel is set to "OutputForm" as default, and
> >would like to set it to other ResultFormatTypes, like "StandardForm" or
> >"MathML". How can I do this? It says that I cannot convert a string to
> >'Wolfram.NETLink.MathKernel.ResultFormatType' when I do like this:
> >
> >Global.mathKernel.ResultFormat = "StandardForm";
> >
> >or like this:
> >
> >Global.mathKernel.ResultFormat =
> >(Wolfram.NETLink.MathKernel.ResultFormatType) "StandardForm";
> >
> >How can I set the ResultFormat then?
> Javier,
> ResultFormatType is an enum, so you use its values like this:
>      Global.mathKernel.ResultFormat =
> Todd Gayley
> Wolfram Research

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