问题描述
有人可以告诉我如何处理它,因为这个 vb.net 不是真的用于图形,真的希望有人能给我解决方案,因为我现在已经死了想想哈哈哈
我遇到这个问题 ExternalException was unhandled
使用 vb.net express 2010 做图像比较密码
bmp.Save("C:\Users\admin\Pictures\G raphical Password\CompareImage.png",Imaging.ImageFormat.Png)
总是出现这个问题
Private Sub cmdCompare_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles cmdCompare.Click
pbDraw.DrawToBitmap(bmp,New Rectangle(567,325,pbDraw.Width,pbDraw.Height))
bmp.Save("C:\Users\admin\Pictures\G raphical Password\CompareImage.png",Imaging.ImageFormat.Png)
bmp = New Bitmap(pbDraw.Width,pbDraw.Height)
Dim bmp1 As Bitmap = Image.FromFile("C:\Users\admin\Pictures\Graphical Password\CompareImage.png")
Dim bmp2 As Bitmap = Image.FromFile("C:\Users\admin\Pictures\Graphical Password\ImagePassword.png")
Dim sameCount As Integer = 0
Dim diffCount As Integer = 0
For x As Integer = 0 To (bmp1.Width) - 1
For y As Integer = 0 To (bmp1.Height) - 1
If bmp1.GetPixel(x,y).Equals(bmp2.GetPixel(x,y)) Then
sameCount += 1
Else
diffCount += 1
End If
Next
Next
Dim total As Integer = sameCount + diffCount
Dim compare As Double = 0.9
Dim totalSame As Double = sameCount / total
Dim totalDiff As Double = diffCount / total
MessageBox.Show(String.Format("Same Percentage: {0}{1}Difference Percentage: {2}",_
(totalSame).ToString("p"),Environment.NewLine,(totalDiff).ToString("p")))
If totalSame > compare Then
Me.Hide()
frmMain.Show()
ElseIf totalSame < compare Then
MessageBox.Show("Password not match,try again")
End If
'IO.File.Delete("C:\Users\admin\Pictures\Graphical Password\CompareImage.png")
End Sub
解决方法
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