User2045693258 posted
i use the code below to upload an image and resize it. up until about a month ago it worked ok, now after i upload an image the pagereloads in postback as the html source. does thing ring any bells with anyone as to why this would happen. i'm using asp.net
2.0. the weird thing is that the image actually resizes and uploads, just on postback i get the html page source and not my webpage - ie the rendered html code as if i was looking at view source.
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Imports System.Drawing.Font
Imports System.IO
Partial Class testupload
Inherits System.Web.UI.Page
Protected Sub filebut_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles filebut.Click
Dim originalImg As Bitmap
Dim newHeight As Int32
originalImg = New Bitmap(FileUpload1.FileContent)
Dim origWidth As Int32 = originalImg.Width
Dim origHeight As Int32 = originalImg.Height
Dim sngRatio As Double
sngRatio = origWidth / origHeight
newHeight = 200 / sngRatio
Dim newImg As Bitmap = New Bitmap(200, newHeight)
Dim oGraphics As Graphics = Graphics.FromImage(newImg)
oGraphics.SmoothingMode = SmoothingMode.AntiAlias
oGraphics.InterpolationMode = InterpolationMode.HighQualityBicubic
oGraphics.DrawImage(originalImg, 0, 0, 200, newHeight)
Const intQuality = 100
Dim codecs() As ImageCodecInfo = ImageCodecInfo.GetImageEncoders()
Dim iciInfo As ImageCodecInfo
Dim item As ImageCodecInfo
For Each item In codecs
If (item.MimeType = "image/jpeg") Then iciInfo = item
Next
Dim ep As EncoderParameters = New EncoderParameters()
ep.Param(0) = New System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, intQuality)
Response.ContentType = "image/jpeg"
newImg.Save("domainpathgohere\" & FileUpload1.FileName, iciInfo, ep)
End Sub
End Class
