DoDolock

1.dll code

Imports System.Web
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.IO

Public Class BMPHandler
Implements IHttpHandler

Public ReadOnly Property IsReusable() As Boolean Implements System.Web.IHttpHandler.IsReusable
Get
Return True
End Get
End Property

Public Sub ProcessRequest(ByVal context As System.Web.HttpContext) Implements System.Web.IHttpHandler.ProcessRequest
Dim s As String = "text drawing here!"

Dim bmpFile As String = context.Request.PhysicalPath
Dim bmp As Image = Bitmap.FromFile(bmpFile)

Dim g As Graphics = Graphics.FromImage(bmp)
Dim f As New Font("Courier New", 10)
Dim b As New SolidBrush(Color.White)
g.DrawString(s, f, b, 0, 0)

Dim ms As MemoryStream = New MemoryStream
bmp.Save(ms, ImageFormat.Bmp)

context.Response.Clear()
context.Response.ContentType = "IMAGE/BMP"
context.Response.BinaryWrite(ms.ToArray())
context.Response.End()

End Sub
End Class


2.註冊到web.config

# posted by ken @ 9:21 下午