frmadduser.frm

学生信息管理系统（需要 SQL Server数据库支持）登录界面系统

VERSION 5.00
Begin VB.Form frmAddUser 
   Caption         =   "添加用户"
   ClientHeight    =   4995
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6420
   LinkTopic       =   "Form1"
   ScaleHeight     =   4995
   ScaleWidth      =   6420
   Begin VB.CommandButton cmdCancel 
      Caption         =   "取消"
      Height          =   495
      Left            =   3840
      TabIndex        =   7
      Top             =   4080
      Width           =   1335
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确认"
      Height          =   495
      Left            =   1320
      TabIndex        =   6
      Top             =   4080
      Width           =   1335
   End
   Begin VB.TextBox Text3 
      Height          =   495
      IMEMode         =   3  'DISABLE
      Left            =   2520
      PasswordChar    =   "*"
      TabIndex        =   5
      Top             =   2520
      Width           =   2655
   End
   Begin VB.TextBox Text2 
      Height          =   495
      IMEMode         =   3  'DISABLE
      Left            =   2520
      PasswordChar    =   "*"
      TabIndex        =   4
      Top             =   1560
      Width           =   2655
   End
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   2520
      TabIndex        =   3
      Top             =   480
      Width           =   2655
   End
   Begin VB.Label Label3 
      Caption         =   "请确认密码"
      Height          =   375
      Left            =   480
      TabIndex        =   2
      Top             =   2640
      Width           =   1695
   End
   Begin VB.Label Label2 
      Caption         =   "请输入密码"
      Height          =   375
      Left            =   480
      TabIndex        =   1
      Top             =   1680
      Width           =   1695
   End
   Begin VB.Label Label1 
      Caption         =   "请输入用户名"
      Height          =   375
      Left            =   480
      TabIndex        =   0
      Top             =   600
      Width           =   1335
   End
End
Attribute VB_Name = "frmAddUser"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit



Private Sub cmdOK_Click()
Dim txtSQL As String
Dim mrc As ADODB.Recordset
Dim msgText As String

'判断是否为空
If Trim(Text1.Text) = "" Then
    MsgBox "请输入用户名！", vbOKOnly + vbInformation, "警告！"
    Exit Sub
    Text1.SetFocus
Else
    txtSQL = "select*from user_info"
    Set mrc = ExecuteSQL(txtSQL, msgText)
    
'判断数据集是否为空
While (mrc.EOF = False)
        '判断是否有重复记录
        If Trim(mrc.Fields(0)) = Trim(Text1) Then
            MsgBox "用户已存在，请重新输入!", vbOKOnly + vbExclamation, "警告!"
            Text1.Text = ""
            Text1.SetFocus
            Text2.Text = ""
            Text3.Text = ""
            Exit Sub
        Else
            mrc.MoveNext
        End If
    Wend

End If

'判断两次输入密码是否一致
If Trim(Text1.Text) <> Trim(Text2.Text) Then
    MsgBox "两次输入密码不一致,请确认!", vbOKCancel + vbInformation, "警告!"
    Text2.Text = ""
    Text2.SetFocus
    Text3.Text = ""
    Exit Sub
Else
    '判断输入密码是否为空
    If Text1.Text = "" Then
        MsgBox "密码不能为空!", vbOKCancel + vbInformation, "警告!"
        Text2.Text = ""
        Text2.SetFocus
        Text3.Text = ""
    Else
            
        '添加新记录
        mrc.AddNew
        mrc.Fields(0) = Text1.Text
        mrc.Fields(1) = Text2.Text
        '更新数据库
        mrc.Update
        '关闭数据集
        mrc.Close
        Me.Hide
        MsgBox "添加用户成功！", vbOKCancel + vbInformation, "添加用户成功!"
    End If
End If
    
    
End Sub