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MathGroup Archive 2004

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How to give back to an image using "Net/Link" and "asp.net"?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg46834] How to give back to an image using "Net/Link" and "asp.net"?
  • From: albert_666 at hotmail.com (Roger)
  • Date: Tue, 9 Mar 2004 19:57:47 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

I need aid to create a graph in mathematica and to place it in a page
aspx being used Net/link and asp.net

I have two paginas aspx WebForm1.aspx and WebFor2m.aspx
WebForm1.aspx calls to WebForm2.aspx to obtain an image:
< img src="WebForm2.aspx ">

The code of "WebForm2.aspx" is the following one:

Imports System.Drawing
Imports System.Drawing.Imaging
Imports Wolfram.NETLink

Public Class WebForm2
    Inherits System.Web.UI.Page

    Private mathkernel As New Wolfram.NETLink.MathKernel
    Dim resultado As String

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As _ 
System.EventArgs) Handles MyBase.Load

        Response.ContentType = "image/gif"

        If (mathkernel.IsComputing()) Then
            mathkernel.Abort()
        Else

            mathkernel.GraphicsHeight = 200
            mathkernel.GraphicsWidth = 300
            mathkernel.CaptureGraphics = True
            mathkernel.Compute("Plot[x,{x,0,1}]")


            If (mathkernel.Graphics.Length > 0) Then
                Response.Write(mathKernel.Graphics(0))
            End If

        End If
    End Sub

End Class


in time of debugin the variable "mathkernel.Graphics.Length" is equal
to 1, but profit not to give back the image to "WebForm1.aspx"


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