我已经从这里为GDI+错误应用了推荐的解决方案:
GDI+、JPEG图像到内存流中出现一般错误
我仍然不适用于jpeg和jpg文件,但适用于所有png
请参阅下面的实际代码:
Dim fl = uploader.PostedFile.FileName.ToLower
If fl.EndsWith(".png") OrElse fl.EndsWith(".jpeg") OrElse fl.EndsWith(".jpg") Then
Using ms = New MemoryStream(uploader.FileBytes)
Using i = Drawing.Image.FromStream(ms)
i.Save(ms, If(fl.EndsWith(".png"), System.Drawing.Imaging.ImageFormat.Png, System.Drawing.Imaging.ImageFormat.Jpeg))
Dim sig = Convert.ToBase64String(ms.ToArray())
Dim code = Trim(txtStaff.Text).PadLeft("00000000")
DB.rw_signature_save(code, sig)
End Using
End Using
BuildSignatureList()
statusBox.Attributes("class") = "notification success"
statusBox.InnerHtml = "Signature updated succesfully"
Else
statusBox.Attributes("class") = "notification warning"
statusBox.InnerHtml = "Only <b>Image</b> ( <font color='green'>.png, .jpg </font> ) files allowed."
End If
除了上面链接的解决方案之外,还有其他解决方案吗?谢谢
刚刚意识到这实际上是不必要的。我可以直接从上传器上去。FileBytes to Convert.ToBase64String
Dim sig = Convert.ToBase64String(uploader.FileBytes)