form14.frm

用VB编的学生信息管理系统

VERSION 5.00
Begin VB.Form Form14 
   BorderStyle     =   4  'Fixed ToolWindow
   Caption         =   "修改密码"
   ClientHeight    =   5415
   ClientLeft      =   45
   ClientTop       =   390
   ClientWidth     =   6375
   LinkTopic       =   "Form14"
   MaxButton       =   0   'False
   MDIChild        =   -1  'True
   MinButton       =   0   'False
   ScaleHeight     =   5415
   ScaleWidth      =   6375
   ShowInTaskbar   =   0   'False
   Begin VB.TextBox Text4 
      Height          =   615
      IMEMode         =   3  'DISABLE
      Left            =   2280
      PasswordChar    =   "*"
      TabIndex        =   9
      Top             =   960
      Width           =   1935
   End
   Begin VB.TextBox Text3 
      Height          =   615
      Left            =   2280
      TabIndex        =   8
      Top             =   240
      Width           =   1935
   End
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   3600
      TabIndex        =   3
      Top             =   3960
      Width           =   975
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确认"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   600
      TabIndex        =   2
      Top             =   3960
      Width           =   975
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      IMEMode         =   3  'DISABLE
      Left            =   2280
      PasswordChar    =   "*"
      TabIndex        =   1
      Top             =   2760
      Width           =   1935
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      IMEMode         =   3  'DISABLE
      Left            =   2280
      PasswordChar    =   "*"
      TabIndex        =   0
      Top             =   1920
      Width           =   1935
   End
   Begin VB.Label Label4 
      Caption         =   "请输入原密码"
      BeginProperty Font 
         Name            =   "黑体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   240
      TabIndex        =   7
      Top             =   1080
      Width           =   1575
   End
   Begin VB.Label Label3 
      Caption         =   "请输入用户名"
      BeginProperty Font 
         Name            =   "黑体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   240
      TabIndex        =   6
      Top             =   360
      Width           =   1695
   End
   Begin VB.Label Label2 
      Caption         =   "请确认新密码"
      BeginProperty Font 
         Name            =   "黑体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   480
      TabIndex        =   5
      Top             =   2880
      Width           =   1695
   End
   Begin VB.Label Label1 
      Caption         =   "请输入新密码"
      BeginProperty Font 
         Name            =   "黑体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   480
      TabIndex        =   4
      Top             =   2040
      Width           =   1695
   End
End
Attribute VB_Name = "Form14"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim conn As New ADODB.Connection
Dim mrc As New ADODB.Recordset
Private Sub Command1_Click()
Dim txt As String
txt = "select * from 用户表 "
Set mrc = executesql(txt)
If Text3.Text = "" Or Text4.Text = "" Then
MsgBox "请输入密码和用户"
Exit Sub
End If
Do While (mrc.EOF = False And mrc.BOF = False)
 If mrc.Fields(0) <> Text3.Text Or mrc.Fields(1) <> Text4.Text Then
  mrc.MoveNext
  Else
If mrc.Fields(0) = Text3.Text And mrc.Fields(1) = Text4.Text Then
  Exit Do
  End If
  End If
Loop
If mrc.EOF = True Then
MsgBox "没有这个用户"

Exit Sub
End If
Dim txtsql As String
   txtsql = "select * from 用户表 where 用户表.用户名= " & "'" & Text3.Text & "'"
  Set mrc = executesql(txtsql)
  If Trim(Text1.Text) <> Trim(Text2.Text) Then
   MsgBox "两次输入密码不一样 请确认!", , "警告"
   Exit Sub
  Else
   If Text2.Text = "" Then
      MsgBox "密码不能为空!", vbExclamation, "警告"
   Else
      mrc.Fields(1).Value = Trim(Text1.Text)
    mrc.Update
    MsgBox "修改密码成功!", , "修改密码"
    Me.Hide
    End If
 End If

End Sub
Public Function executesql(ByVal sql As String) As ADODB.Recordset
  Dim cnn As ADODB.Connection
  Dim rst As ADODB.Recordset
  Set cnn = New ADODB.Connection
  Dim stokens() As String
   stokens = Split(sql)
   cnn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\student.mdb"
  If InStr(" INSERT,DELETE,UPDATE", UCase$(stokens(0))) Then
   cnn.Execute sql
  Else
  Set rst = New ADODB.Recordset
   rst.Open Trim$(sql), cnn, adOpenKeyset, adLockOptimistic
  Set executesql = rst
  End If

End Function

Private Sub Command2_Click()
 Me.Hide
End Sub

Private Sub Form_Load()
  connstr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\student.mdb"
  conn.Open connstr
  Text1.Text = ""
  Text2.Text = ""
End Sub