验证码获取代码
Case "getVimg.htm"
Dim bmp As new bitmap(70, 40)
Dim g As Graphics = Graphics.FromImage(bmp)
Dim Val1 As Double = Rand.Next(10000)
Dim fnt As New Font("宋体",16)
Dim msg As String = format(val1, "0000")
g.DrawString(msg,fnt,Brushes.Red,10,10)
e.AppendCookie("yanzhengma", msg) '校对这个cookie
Dim ms As new IO.MemoryStream()
bmp.Save(ms, ImageFormat.png)
Dim buffer = ms.ToArray
e.Response.C
Dim output = e.response.OutputStream
output.Write(buffer,0,buffer.Length)
output.Close()
'这里测试weui
我希望在输入完验证码后，系统进行验证，输入的验证码正确可以点击按钮，输入不正确，弹出提示，请问老师怎么做呢？
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Post By：2019/3/22 15:47:00 [只看该作者]
