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asp 动态生成验证码

Mon, 07 Jan 2008 14:44:00 GMT

<%
Const nMaxSaturation = 100   ' 最大色彩饱和度
Const nBlankNoisyDotOdds = 0.2 ' �I�白处噪点率
Const nColorNoisyDotOdds = 0.1 ' 有色处噪点率
Const nCharCount = 4      ' 产生的字�W�个�?br /> Const nPixelWidth = 20     ' 单个字符位图的宽�?br /> Const nPixelHeight = 20       ' 单个字符位图的高�?br /> Const nColorHue = 220      ' 昄��验证码的色调(-1表示随机色调, -2表示灰度色调)
Const nAngleRandom = 10         ' 角度随机�?br /> Const nLengthRandom = 10        ' 长度随机�?癑ֈ��?
Const cCharSet = "0123456789"
                                ' 构成验证码的字符�?br />                                 ' 如果扩充了下边的字母矢量库，则可以相应扩充这个字�W�集

Dim Buf(), DigtalStr
Dim Lines(), LineCount
Dim CursorX, CursorY, DirX, DirY

Randomize
Call CreaalidCode("GetCode")

Sub CDGen_Reset()
' 复位矢量�W�和环境变量
LineCount = 0
CursorX = 0
CursorY = 0
' 初始的光�W�方向是垂直向下
DirX = 0
DirY = 1
End Sub

Sub CDGen_Clear()
' 清空位图阵列
Dim i, j
ReDim Buf(nPixelHeight - 1, nCharCount * nPixelWidth - 1)

For j = 0 To nPixelHeight - 1
  For i = 0 To nCharCount * nPixelWidth - 1
   Buf(j, i) = 0
  Next
Next
End Sub

Sub CDGen_PSet(X, Y)
' 在位��N��列上�ȝ��
Buf(Y, X) = 1
End Sub

Sub CDGen_Line(X1, Y1, X2, Y2)
' 在位��N��列上�ȝ��
Dim DX, DY, DeltaT, i

DX = X2 - X1
DY = Y2 - Y1
If Abs(DX) > Abs(DY) Then DeltaT = Abs(DX) Else DeltaT = Abs(DY)
For i = 0 To DeltaT
CDGen_PSet X1 + DX * i / DeltaT, Y1 + DY * i / DeltaT
Next
End Sub

Sub CDGen_FowardDraw(nLength)
' 按当前光�W�方向绘制指定长度�ƈ�U�d��光笔�Q�正数表�C�Z��左向�?从上向下�l�制�Q�负数表�C�Z��叛_��?从下向上�l�制
nLength = Sgn(nLength) * Abs(nLength) * (1 - nLengthRandom / 100 + Rnd * nLenghtRandom * 2 / 100)
ReDim Preserve Lines(3, LineCount)
Lines(0, LineCount) = CursorX
Lines(1, LineCount) = CursorY
CursorX = CursorX + DirX * nLength
CursorY = CursorY + DirY * nLength
Lines(2, LineCount) = CursorX
Lines(3, LineCount) = CursorY
LineCount = LineCount + 1
End Sub

Sub CDGen_SetDirection(nAngle)
' 按指定角度设定画�W�方�? 正数表示相对当前方向��时针改变方向，负数表示相对当前方向逆时针改变方�?br /> Dim DX, DY

nAngle = Sgn(nAngle) * (Abs(nAngle) - nAngleRandom + Rnd * nAngleRandom * 2) / 180 * 3.1415926
DX = DirX
DY = DirY
DirX = DX * Cos(nAngle) - DY * Sin(nAngle)
DirY = DX * Sin(nAngle) + DY * Cos(nAngle)
End Sub

Sub CDGen_MoveToMiddle(nActionIndex, nPercent)
' ��画�W�光标移动到指定动作的中间点上，nPercent��Z��间位�|�的癑ֈ��?br /> Dim DeltaX, DeltaY

DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)
DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)
CursorX = Lines(0, nActionIndex) + Sgn(DeltaX) * Abs(DeltaX) * nPercent / 100
CursorY = Lines(1, nActionIndex) + Sgn(DeltaY) * Abs(DeltaY) * nPercent / 100
End Sub

Sub CDGen_MoveCursor(nActionIndex)
' ��画�W�光标移动到指定动作的�v始点�?br /> CursorX = Lines(0, nActionIndex)
CursorY = Lines(1, nActionIndex)
End Sub

Sub CDGen_Close(nActionIndex)
' ��当前光�W�位�|�与指定动作的�v始点闭合�q�移动光�W?br /> ReDim Preserve Lines(3, LineCount)
Lines(0, LineCount) = CursorX
Lines(1, LineCount) = CursorY
CursorX = Lines(0, nActionIndex)
CursorY = Lines(1, nActionIndex)
Lines(2, LineCount) = CursorX
Lines(3, LineCount) = CursorY
LineCount = LineCount + 1
End Sub

Sub CDGen_CloseToMiddle(nActionIndex, nPercent)
' ��当前光�W�位�|�与指定动作的中间点闭合�q�移动光�W�，nPercent��Z��间位�|�的癑ֈ��?br /> Dim DeltaX, DeltaY

ReDim Preserve Lines(3, LineCount)
Lines(0, LineCount) = CursorX
Lines(1, LineCount) = CursorY
DeltaX = Lines(2, nActionIndex) - Lines(0, nActionIndex)
DeltaY = Lines(3, nActionIndex) - Lines(1, nActionIndex)
CursorX = Lines(0, nActionIndex) + Sgn(DeltaX) * Abs(DeltaX) * nPercent / 100
CursorY = Lines(1, nActionIndex) + Sgn(DeltaY) * Abs(DeltaY) * nPercent / 100
Lines(2, LineCount) = CursorX
Lines(3, LineCount) = CursorY
LineCount = LineCount + 1
End Sub

Sub CDGen_Flush(X0, Y0)
' 按照当前的画�W�动作序列绘制位囄��?br /> Dim MaxX, MinX, MaxY, MinY
Dim DeltaX, DeltaY, StepX, StepY, OffsetX, OffsetY
Dim i

MaxX = MinX = MaxY = MinY = 0
For i = 0 To LineCount - 1
  If MaxX < Lines(0, i) Then MaxX = Lines(0, i)
  If MaxX < Lines(2, i) Then MaxX = Lines(2, i)
  If MinX > Lines(0, i) Then MinX = Lines(0, i)
  If MinX > Lines(2, i) Then MinX = Lines(2, i)
  If MaxY < Lines(1, i) Then MaxY = Lines(1, i)
  If MaxY < Lines(3, i) Then MaxY = Lines(3, i)
  If MinY > Lines(1, i) Then MinY = Lines(1, i)
  If MinY > Lines(3, i) Then MinY = Lines(3, i)
Next
DeltaX = MaxX - MinX
DeltaY = MaxY - MinY
If DeltaX = 0 Then DeltaX = 1
If DeltaY = 0 Then DeltaY = 1
MaxX = MinX
MaxY = MinY
If DeltaX > DeltaY Then
  StepX = (nPixelWidth - 2) / DeltaX
  StepY = (nPixelHeight - 2) / DeltaX
  OffsetX = 0
  OffsetY = (DeltaX - DeltaY) / 2
Else
  StepX = (nPixelWidth - 2) / DeltaY
  StepY = (nPixelHeight - 2) / DeltaY
  OffsetX = (DeltaY - DeltaX) / 2
  OffsetY = 0
End If
For i = 0 To LineCount - 1
  Lines(0, i) = Round((Lines(0, i) - MaxX + OffsetX) * StepX, 0)
  If Lines(0, i) < 0 Then Lines(0, i) = 0
  If Lines(0, i) >= nPixelWidth - 2 Then Lines(0, i) = nPixelWidth - 3
  Lines(1, i) = Round((Lines(1, i) - MaxY + OffsetY) * StepY, 0)
  If Lines(1, i) < 0 Then Lines(1, i) = 0
  If Lines(1, i) >= nPixelHeight - 2 Then Lines(1, i) = nPixelHeight - 3
  Lines(2, i) = Round((Lines(2, i) - MinX + OffsetX) * StepX, 0)
  If Lines(2, i) < 0 Then Lines(2, i) = 0
  If Lines(2, i) >= nPixelWidth - 2 Then Lines(2, i) = nPixelWidth - 3
  Lines(3, i) = Round((Lines(3, i) - MinY + OffsetY) * StepY, 0)
  If Lines(3, i) < 0 Then Lines(3, i) = 0
  If Lines(3, i) >= nPixelHeight - 2 Then Lines(3, i) = nPixelHeight - 3
  CDGen_Line Lines(0, i) + X0 + 1, Lines(1, i) + Y0 + 1, Lines(2, i) + X0 + 1, Lines(3, i) + Y0 + 1
Next
End Sub

Sub CDGen_Char(cChar, X0, Y0)
' 在指定坐标处生成指定字符的位��N��?br /> CDGen_Reset
Select Case cChar
Case "0"
  CDGen_SetDirection -60                            ' 逆时�?0�?相对于垂直线)
  CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -60                            ' 逆时�?0�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 1.5                              ' �l�制1.5个单�?br />   CDGen_SetDirection -60                            ' 逆时�?0�?br />   CDGen_FowardDraw 0.7                              ' �l�制0.7个单�?br />   CDGen_SetDirection -60                            ' ��时�?20�?br />   CDGen_FowardDraw 0.7                              ' �l�制0.7个单�?br />   CDGen_Close 0                                     ' ��闭当前�W�与�W?�W?0开�?
Case "1"
  CDGen_SetDirection -90                            ' 逆时�?0�?相对于垂直线)
  CDGen_FowardDraw 0.5                              ' �l�制0.5个单�?br />   CDGen_MoveToMiddle 0, 50                          ' �U�d��ȝ��的位�|�到�W?�W?0开�?�?0%�?br />   CDGen_SetDirection 90                             ' 逆时�?0�?br />   CDGen_FowardDraw -1.4                             ' 反方向绘�?.4个单�?br />   CDGen_SetDirection 30                             ' 逆时�?0�?br />   CDGen_FowardDraw 0.4                              ' �l�制0.4个单�?br /> Case "2"
  CDGen_SetDirection 45                             ' ��时�?5�?相对于垂直线)
  CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -120                           ' 逆时�?20�?br />   CDGen_FowardDraw 0.4                              ' �l�制0.4个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.6                              ' �l�制0.6个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 1.6                              ' �l�制1.6个单�?br />   CDGen_SetDirection -135                           ' 逆时�?35�?br />   CDGen_FowardDraw 1.0                              ' �l�制1.0个单�?br /> Case "3"
  CDGen_SetDirection -90                            ' 逆时�?0�?相对于垂直线)
  CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection 135                            ' ��时�?35�?br />   CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection -120                           ' 逆时�?20�?br />   CDGen_FowardDraw 0.6                              ' �l�制0.6个单�?br />   CDGen_SetDirection 80                             ' ��时�?0�?br />   CDGen_FowardDraw 0.5                              ' �l�制0.5个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.5                              ' �l�制0.5个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.5                              ' �l�制0.5个单�?br /> Case "4"
  CDGen_SetDirection 20                             ' ��时�?0�?相对于垂直线)
  CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection -110                           ' 逆时�?10�?br />   CDGen_FowardDraw 1.2                              ' �l�制1.2个单�?br />   CDGen_MoveToMiddle 1, 60                          ' �U�d��ȝ��的位�|�到�W?�W?0开�?�?0%�?br />   CDGen_SetDirection 90                             ' ��时�?0�?br />   CDGen_FowardDraw 0.7                              ' �l�制0.7个单�?br />   CDGen_MoveCursor 2                                ' �U�d��ȝ��到第2�W?0开�?的开始处
  CDGen_FowardDraw -1.5                             ' 反方向绘�?.5个单�?br /> Case "5"
  CDGen_SetDirection 90                             ' ��时�?0�?相对于垂直线)
  CDGen_FowardDraw 1.0                              ' �l�制1.0个单�?br />   CDGen_SetDirection -90                            ' 逆时�?0�?br />   CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection -90                            ' 逆时�?0�?br />   CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection 30                             ' ��时�?0�?br />   CDGen_FowardDraw 0.4                              ' �l�制0.4个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.4                              ' �l�制0.4个单�?br />   CDGen_SetDirection 30                             ' ��时�?0�?br />   CDGen_FowardDraw 0.5                              ' �l�制0.5个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br /> Case "6"
  CDGen_SetDirection -60                            ' 逆时�?0�?相对于垂直线)
  CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -60                            ' 逆时�?0�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 1.5                              ' �l�制1.5个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 0.7                              ' �l�制0.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 0.5                              ' �l�制0.5个单�?br />   CDGen_CloseToMiddle 2, 50                         ' ��当前画�W�位�|�与�W?�W?0开�?�?0%处封�?br /> Case "7"
  CDGen_SetDirection 180                            ' ��时�?80�?相对于垂直线)
  CDGen_FowardDraw 0.3                              ' �l�制0.3个单�?br />   CDGen_SetDirection 90                             ' ��时�?0�?br />   CDGen_FowardDraw 0.9                              ' �l�制0.9个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 1.3                              ' �l�制1.3个单�?br /> Case "8"
  CDGen_SetDirection -60                            ' 逆时�?0�?相对于垂直线)
  CDGen_FowardDraw -0.8                             ' 反方向绘�?.8个单�?br />   CDGen_SetDirection -60                            ' 逆时�?0�?br />   CDGen_FowardDraw -0.8                             ' 反方向绘�?.8个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection 110                            ' ��时�?10�?br />   CDGen_FowardDraw -1.5                             ' 反方向绘�?.5个单�?br />   CDGen_SetDirection -110                           ' 逆时�?10�?br />   CDGen_FowardDraw 0.9                              ' �l�制0.9个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.8                              ' �l�制0.8个单�?br />   CDGen_SetDirection 60                             ' ��时�?0�?br />   CDGen_FowardDraw 0.9                              ' �l�制0.9个单�?br />   CDGen_SetDirection 70                             ' ��时�?0�?br />   CDGen_FowardDraw 1.5                             ' �l�制1.5个单�?br />   CDGen_Close 0                                     ' ��闭当前�W�与�W?�W?0开�?
Case "9"
  CDGen_SetDirection 120                            ' 逆时�?0�?相对于垂直线)
  CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -60                            ' 逆时�?0�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -60                            ' ��时�?20�?br />   CDGen_FowardDraw -1.5                              ' �l�制1.5个单�?br />   CDGen_SetDirection -60                            ' ��时�?20�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -60                            ' ��时�?20�?br />   CDGen_FowardDraw -0.7                              ' �l�制0.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -60                            ' ��时�?20�?br />   CDGen_FowardDraw 0.5                              ' �l�制0.5个单�?br />   CDGen_CloseToMiddle 2, 50                         ' ��当前画�W�位�|�与�W?�W?0开�?�?0%处封�?br /> ' 以下为字母的矢量动作�Q�有兴趣的可以��l?br /> Case "A"
  CDGen_SetDirection -(Rnd * 20 + 150)              ' 逆时�?50-170�?相对于垂直线)
  CDGen_FowardDraw Rnd * 0.2 + 1.1                  ' �l�制1.1-1.3个单�?br />   CDGen_SetDirection Rnd * 20 + 140                 ' ��时�?40-160�?br />   CDGen_FowardDraw Rnd * 0.2 + 1.1                  ' �l�制1.1-1.3个单�?br />   CDGen_MoveToMiddle 0, 30                          ' �U�d��ȝ��的位�|�到�W?�W?0开�?�?0%�?br />   CDGen_CloseToMiddle 1, 70                         ' ��当前画�W�位�|�与�W?�W?0开�?�?0%处封�?br /> Case "B"
  CDGen_SetDirection -(Rnd * 20 + 50)               ' 逆时�?0-70�?相对于垂直线)
  CDGen_FowardDraw Rnd * 0.4 + 0.8                  ' �l�制0.8-1.2个单�?br />   CDGen_SetDirection Rnd * 20 + 110                 ' ��时�?10-130�?br />   CDGen_FowardDraw Rnd * 0.2 + 0.6                  ' �l�制0.6-0.8个单�?br />   CDGen_SetDirection -(Rnd * 20 + 110)              ' 逆时�?10-130�?br />   CDGen_FowardDraw Rnd * 0.2 + 0.6                  ' �l�制0.6-0.8个单�?br />   CDGen_SetDirection Rnd * 20 + 110                 ' ��时�?10-130�?br />   CDGen_FowardDraw Rnd * 0.4 + 0.8                  ' �l�制0.8-1.2个单�?br />   CDGen_Close 0                                     ' ��闭当前�W�与�W?�W?0开�?
Case "C"
  CDGen_SetDirection -60                            ' 逆时�?0�?相对于垂直线)
  CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection -60                            ' 逆时�?0�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 1.5                              ' �l�制1.5个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw -0.7                             ' 反方向绘�?.7个单�?br />   CDGen_SetDirection 120                            ' ��时�?20�?br />   CDGen_FowardDraw 0.7                              ' �l�制0.7个单�?br /> End Select
CDGen_Flush X0, Y0
End Sub

Sub CDGen_Blur()
' 对��生的位图�q�行柔化处理
Dim i, j

For j = 1 To nPixelHeight - 2
  For i = 1 To nCharCount * nPixelWidth - 2
   If Buf(j, i) = 0 Then
    If ((Buf(j, i - 1) Or Buf(j + 1, i)) And 1) <> 0 Then
     ' 如果当前�Ҏ��I�白点，且上下左叛_��个点中有一个点是有色点�Q�则该点做柔化处�?br />      Buf(j, i) = 2
    End If
   End If
  Next
Next
End Sub

Sub CDGen_NoisyDot()
' 对��生的位图�q�行噪点处理
Dim i, j, NoisyDot, CurDot

For j = 0 To nPixelHeight - 1
  For i = 0 To nCharCount * nPixelWidth - 1
   If Buf(j, i) <> 0 Then
    NoisyDot = Int(Rnd * Rnd * nMaxSaturation)
    Select Case nColorNoisyDotOdds
    Case 0
     CurDot = nMaxSaturation
    Case 1
     CurDot = 0
    Case Else
     CurDot = NoisyDot
    End Select
    If Rnd < nColorNoisyDotOdds Then Buf(j, i) = CurDot Else Buf(j, i) = nMaxSaturation
   Else
    NoisyDot = Int(Rnd * nMaxSaturation)
    Select Case nBlankNoisyDotOdds
    Case 0
     CurDot = 0
    Case 1
     CurDot = nMaxSaturation
    Case Else
     CurDot = NoisyDot
    End Select
    If Rnd < nBlankNoisyDotOdds Then Buf(j, i) = CurDot Else Buf(j, i) = 0
   End If
  Next
Next
End Sub

Sub CDGen()
' 生成位图阵列
Dim i, Ch

DigtalStr = ""
CDGen_Clear
For i = 0 To nCharCount - 1
  Ch = Mid(cCharSet, Int(Rnd * Len(cCharSet)) + 1, 1)
  DigtalStr = DigtalStr + Ch
  CDGen_Char Ch, i * nPixelWidth, 0
Next
CDGen_Blur
CDGen_NoisyDot
End Sub

Function HSBToRGB(vH, vS, vB)
' ��颜色值由HSB转换为RGB
Dim aRGB(3), RGB1st, RGB2nd, RGB3rd
Dim nH, nS, nB
Dim lH, nF, nP, nQ, nT

vH = (vH Mod 360)
If vS > 100 Then
  vS = 100
ElseIf vS < 0 Then
  vS = 0
End If
If vB > 100 Then
  vB = 100
ElseIf vB < 0 Then
  vB = 0
End If
If vS > 0 Then
  nH = vH / 60
  nS = vS / 100
  nB = vB / 100
  lH = Int(nH)
  nF = nH - lH
  nP = nB * (1 - nS)
  nQ = nB * (1 - nS * nF)
  nT = nB * (1 - nS * (1 - nF))
  Select Case lH
  Case 0
   aRGB(0) = nB * 255
   aRGB(1) = nT * 255
   aRGB(2) = nP * 255
  Case 1
   aRGB(0) = nQ * 255
   aRGB(1) = nB * 255
   aRGB(2) = nP * 255
  Case 2
   aRGB(0) = nP * 255
   aRGB(1) = nB * 255
   aRGB(2) = nT * 255
  Case 3
   aRGB(0) = nP * 255
   aRGB(1) = nQ * 255
   aRGB(2) = nB * 255
  Case 4
   aRGB(0) = nT * 255
   aRGB(1) = nP * 255
   aRGB(2) = nB * 255
  Case 5
   aRGB(0) = nB * 255
   aRGB(1) = nP * 255
   aRGB(2) = nQ * 255
  End Select
Else
  aRGB(0) = (vB * 255) / 100
  aRGB(1) = aRGB(0)
  aRGB(2) = aRGB(0)
End If
HSBToRGB = ChrB(Round(aRGB(2), 0)) & ChrB(Round(aRGB(1), 0)) & ChrB(Round(aRGB(0), 0))
End Function

Sub CreaalidCode(pSN)
Dim i, j, CurColorHue

' ��止�~�存
Response.Expires = -9999
Response.AddHeader "pragma", "no-cache"
Response.AddHeader "cache-ctrol", "no-cache"
Response.ContentType = "image/bmp"

Call CDGen
Session(pSN) = DigtalStr '记录入Session

Dim PicWidth, PicHeight, FileSize, PicDataSize
PicWidth = nCharCount * nPixelWidth
PicHeight = nPixelHeight
PicDataSize = PicWidth * PicHeight * 3
FileSize = PicDataSize + 54

' 输出BMP文�g信息�?br /> Response.BinaryWrite ChrB(66) & ChrB(77) & _
  ChrB(FileSize Mod 256) & ChrB((FileSize \ 256) Mod 256) & ChrB((FileSize \ 256 \ 256) Mod 256) & ChrB(FileSize \ 256 \ 256 \ 256) & _
  ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _
  ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0)

' 输出BMP位图信息�?br /> Response.BinaryWrite ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & _
  ChrB(PicWidth Mod 256) & ChrB((PicWidth \ 256) Mod 256) & ChrB((PicWidth \ 256 \ 256) Mod 256) & ChrB(PicWidth \ 256 \ 256 \ 256) & _
  ChrB(PicHeight Mod 256) & ChrB((PicHeight \ 256) Mod 256) & ChrB((PicHeight \ 256 \ 256) Mod 256) & ChrB(PicHeight \ 256 \ 256 \ 256) & _
  ChrB(1) & ChrB(0) & _
  ChrB(24) & ChrB(0) & _
  ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _
  ChrB(PicDataSize Mod 256) & ChrB((PicDataSize \ 256) Mod 256) & ChrB((PicDataSize \ 256 \ 256) Mod 256) & ChrB(PicDataSize \ 256 \ 256 \ 256) & _
  ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & _
  ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & _
  ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & _
  ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0)

' 逐点输出位图阵列
If nColorHue = -1 Then
  CurColorHue = Int(Rnd * 360)
ElseIf nColorHue = -2 Then
  CurColorHue = 0
Else
  CurColorHue = nColorHue
End If
For j = 0 To nPixelHeight - 1
  For i = 0 To Len(DigtalStr) * nPixelWidth - 1
   If nColorHue = -2 Then
    Response.BinaryWrite HSBToRGB(CurColorHue, 0, 100 - Buf(nPixelHeight - 1 - j, i))
   Else
    Response.BinaryWrite HSBToRGB(CurColorHue, Buf(nPixelHeight - 1 - j, i), 100)
   End If
  Next
Next
End Sub
%>

�?/a> 2008-01-07 22:44 发表评论

asp.net 手写代码实现

Mon, 07 May 2007 14:31:00 GMT

<%@ Page Language="C#" ContentType="text/html" ResponseEncoding="gb2312" EnableEventValidation="false"%>
<%@ import Namespace = "System.Data"%>
<%@ import Namespace = "System.Data.OleDb"%>

�?/a> 2007-05-07 22:31 发表评论

我开发的BBS论坛

Mon, 20 Nov 2006 16:10:00 GMT

首先启动IIS 下面��坛图�?

�?/a> 2006-11-21 00:10 发表评论

C#�~�写ATM模拟�E�序

Sun, 12 Nov 2006 14:55:00 GMT

先编写一个连接数据库的类
using System;

namespace ATM
{

public class CheckProcess
{
  public int tid;
  ConnDB db;
  public CheckProcess()
  {
    db=new ConnDB();
  }
  public bool checkUser(string name,string pass)
  {
   int a=db.examine(name,pass);
   if(a!=0)
   {
    return true;
   }
   return false;
  }
  public bool checknumber(string str){
  float f=float.Parse(str);
   if(f <=5000){
   return true;
   }
  return false;
  }
  public bool checkinput(string str)
  {
   char[] c= str.ToCharArray();
   for(int i=0;i   {
    if(c[i]<'.'||c[i]>'9'||c[i]=='/')
    {
     return false;
    }
   }
   return true;
  }
  public bool checkPassword(string str)
  {
   char[] c= str.ToCharArray();
   for(int i=0;i   {
    if(c[i]<'.'||c[i]>'9')
    {
     return false;
    }
   }
   return true;
  }
}
}
Form1部分代码�Q?/font>
  private void button1_Click(object sender, System.EventArgs e)
  {
   CheckProcess pro=new CheckProcess();
   name=text1.Text;
   pass=text2.Text;
   if(!name.Equals("")||!pass.Equals(""))
   {
    if(pro.checkUser(name,pass))
    {
     ConnDB db=new ConnDB();
     int a=db.getID(name,pass);
     ATM.Form2 f2=new Form2();
     f2.setUserID(a,name,pass);
     this.Hide();
     f2.Show();
    }
    else
    {
     MessageBox.Show("产生错误!");
    }
   }
   else
   {
    label3.ForeColor=System.Drawing.Color.Red;
    label3.Text="误��入正��的用户名或密码!";
   }
  }
Form2部分代码�Q?/font>
  private int id;
  private string name;
  private string pwd;
  public void setUserID(int id,string name,string pwd){
  this.id=id;
  this.name = name;
  this.pwd=pwd;
  }
  private void Form2_Load(object sender, System.EventArgs e)
  {
   this.Text="�Ƣ迎用户"+name+"登陆请选择您需要的操作";
  }
  private void button5_Click(object sender, System.EventArgs e)
  {
   ATM.Form1 f1=new Form1();
   this.Close();
   f1.Show();
  }
  private void button1_Click(object sender, System.EventArgs e)
  {
   ConnDB db=new ConnDB();
   ATM.Form3 f3=new Form3();
   string price=db.getPrice(id);
   f3.setUserID(id,price);
   f3.Show();
  }
  private void button3_Click(object sender, System.EventArgs e)
  {
   ConnDB db=new ConnDB();
   string price=db.getPrice(id);
   MessageBox.Show("你当前帐户余额�ؓ:"+price+"�?RMB)          ","用户"+name+"您好!",MessageBoxButtons.OK,MessageBoxIcon.Information);
  }

  private void button2_Click(object sender, System.EventArgs e)
  {
   ConnDB db=new ConnDB();
   string str =db.getPrice(id);
   ATM.Form4 f4=new Form4();
   f4.setUser(id,str);
   f4.Show();
  }

  private void button4_Click(object sender, System.EventArgs e)
  {
   ATM.Form5 f5=new Form5();
   f5.setUserName(name,pwd,id);
   f5.Show();
  }

form3部分代码�Q?/font>
  private void button1_Click(object sender, System.EventArgs e)
  {
   ConnDB db=new ConnDB();
   CheckProcess p=new CheckProcess();
   if(!this.textBox1.Text.Equals("")&&this.textBox1.Text.Length<10)
   {
    if(p.checkinput(this.textBox1.Text)&&p.checknumber(this.textBox1.Text))
    {
     bool flan=db.ReduceMoney(this.textBox1.Text,id,price);
     if(flan)
     {
      MessageBox.Show("输入金额已成功取出           �?","Information",MessageBoxButtons.OK,MessageBoxIcon.Information);
      this.Close();
     }
     else
     {
      MessageBox.Show("对不�?您的帐户不��","Information",MessageBoxButtons.OK,MessageBoxIcon.Error);
      this.textBox1.Text="";
     }
    }
    else
    {
     MessageBox.Show("您的输入有问题！","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
     this.textBox1.Text="";
    }
   }
   else
   {
    MessageBox.Show("产生错误请重新填�?!","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
    this.textBox1.Text="";
   }
   }

form4部分代码�Q?/font>
  private void button1_Click(object sender, System.EventArgs e)
  {
   ConnDB db=new ConnDB();
   CheckProcess p=new CheckProcess();
   if(!this.textBox1.Text.Equals("")&&this.textBox1.Text.Length < 10)
   {
    if(p.checkinput(this.textBox1.Text))
    {
     bool flan =db.AddMoney(this.textBox1.Text,id);
     if(flan)
     {
      MessageBox.Show("输入金额已成功存入帐�?,"Information",MessageBoxButtons.OK,MessageBoxIcon.Information);
      this.Close();
     }
     else
     {
      MessageBox.Show("对不�? 输入金额没有存入请重新输�?","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
      this.textBox1.Text="";
     }
    }
    else
    {
     MessageBox.Show("误��入数�?","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
     this.textBox1.Text="";
    }
   }
   else
   {
    MessageBox.Show("产生错误!请重新输�?","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
    this.textBox1.Text="";
   }
  }

form5部分代码:
  private void button1_Click(object sender, System.EventArgs e)
  {
   CheckProcess p=new CheckProcess();
   if(!this.textBox1.Text.Equals("")||!this.textBox2.Text.Equals(""))
   {
    if(this.textBox1.Text.Length == 6 || this.textBox2.Text.Length == 6)
    {
     if(p.checkPassword(this.textBox1.Text)&&p.checkPassword(this.textBox2.Text))
     {
      if(this.textBox1.Text.Equals(pwd))
      {
       ConnDB db=new ConnDB();
       bool flan=db.checkUserpass(this.textBox2.Text,id);
       if(flan)
       {
        MessageBox.Show("修改成功完成    ","Update Success",MessageBoxButtons.OK,MessageBoxIcon.Information);
        this.Close();
       }
       else
       {
        MessageBox.Show("对不�?    修改��p�|!    ","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
        this.Close();
       }
      }
      else
      {
       MessageBox.Show("对不��P��您的密码不正��?    ","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
       this.textBox1.Text="";
       this.textBox2.Text="";
      }
     }
     else
     {
      MessageBox.Show("误��?~9之间的整敊W� �?","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
      this.textBox1.Text="";
      this.textBox2.Text="";
     }
    }
    else{
    MessageBox.Show("密码太长或太短请输入6位密码  �?","ERROR",MessageBoxButtons.OK,MessageBoxIcon.Error);
    this.textBox1.Text="";
    this.textBox2.Text="";
    }
   }
   else
   {
    MessageBox.Show("误��入内容        �?","What way?",MessageBoxButtons.OK,MessageBoxIcon.Warning);
   }
  }

�?/a> 2006-11-12 22:55 发表评论

Sat, 04 Nov 2006 16:35:00 GMT

<%
'以OLEDB形势讉K��SQL Server数据�?br /> set con=server.CreateObject("adodb.connection")
con.connectionstring="provider=sqloledb;data source=.;uid=sa;pwd=;database=server"
con.open
set rs=server.CreateObject("adodb.recordset")
sql="select * from kop"
rs.open sql,con,2,3
response.Write(rs("id")&" ")
response.Write(rs("name")&" ")
response.Write(rs("http")&" ")
response.Write(rs("adds")&" ")
%>

<%
'以OLEDB形势讉K��Access数据�?br /> set con=server.CreateObject("adodb.connection")
con.connectionstring="provider=microsoft.jet.oledb.4.0;data source="&MapPath("color.mdb")
con.open
set rs=server.CreateObject("adodb.recordset")
sql="select * from class1"
rs.open sql,con,2,3
response.Write(rs("id")&" ")
response.Write(rs("name")&" ")
response.Write(rs("http")&" ")
response.Write(rs("fileworks")&" ")
%>

�?/a> 2006-11-05 00:35 发表评论