Hi All,
I have borrowed some code from here:
http://www.codeproject.com/aspnet/as...b_graphics.asp
This works as expected when I use in-line code, but when I moved it to
code-behind, it stops working. The image does not appear, no
errors...all I get is a blank HTML page:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html;
charset=windows-1252"></HEAD>
<BODY></BODY></HTML>
Note the content type of text/html.
Heres my code-behind:
Imports System.Drawing
Imports System.Drawing.Text
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Public Class image
Inherits System.Web.UI.Page
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub
InitializeComponent()
End Sub
'NOTE: The following placeholder declaration is required by the Web
Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Response.Clear()
Dim height As Integer = 100
Dim width As Integer = 200
Dim r As New Random
Dim x As Integer = r.Next(75)
Dim bmp As New Bitmap(width, height,
PixelFormat.Format24bppRgb)
Dim g As Graphics = Graphics.FromImage(bmp)
g.TextRenderingHint = TextRenderingHint.AntiAlias
g.Clear(Color.Orange)
g.DrawRectangle(Pens.White, 1, 1, width - 3, height - 3)
g.DrawRectangle(Pens.Gray, 2, 2, width - 3, height - 3)
g.DrawRectangle(Pens.Black, 0, 0, width, height)
g.DrawString(Request.QueryString("overlaytext"), _
New Font("Arial", 14, FontStyle.Italic), _
SystemBrushes.WindowText, New PointF(x, 50))
bmp.Save(Response.OutputStream, ImageFormat.Jpeg)
g.Dispose()
bmp.Dispose()
Response.End()
End Sub
End Class
Heres my web form (ASPX) page:
<%@ Page Language="VB" ContentType="image/jpeg" %>
Hope someone can help! :)
Regards,
Simon.
