保存图片的问题,急
代码如下:
Dim saveFileDialog1 As New SaveFileDialog()
saveFileDialog1.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif"
saveFileDialog1.Title = "Save an Image File"
saveFileDialog1.ShowDialog()
Dim fs As System.IO.FileStream = CType _
(saveFileDialog1.OpenFile(), System.IO.FileStream)
Select Case saveFileDialog1.FilterIndex
Case 1
PictureBox1.Image.Save(fs, _
System.Drawing.Imaging.ImageFormat.Jpeg)
Case 2
PictureBox1.Image.Save(fs, _
System.Drawing.Imaging.ImageFormat.Bmp)
Case 3
PictureBox1.Image.Save(fs, _
System.Drawing.Imaging.ImageFormat.Gif)
End Select
fs.Close()
End If
出现以下错误提示:在 System.Runtime.InteropServices.ExternalException 中第一次偶然出现的“System.Drawing.dll”类型的异常
请问如何解决