form1.vb

大学生记帐管理系统

Imports System
Imports System.IO
Public Class login
    Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(login))
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Font = New System.Drawing.Font("宋体", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.Location = New System.Drawing.Point(48, 64)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(72, 22)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "用户名："
        '
        'Label2
        '
        Me.Label2.AutoSize = True
        Me.Label2.Font = New System.Drawing.Font("宋体", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label2.Location = New System.Drawing.Point(48, 112)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(72, 22)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "密  码："
        '
        'Label3
        '
        Me.Label3.AutoSize = True
        Me.Label3.Font = New System.Drawing.Font("新宋体", 15.0!, CType((System.Drawing.FontStyle.Bold Or System.Drawing.FontStyle.Italic), System.Drawing.FontStyle), System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label3.Location = New System.Drawing.Point(40, 16)
        Me.Label3.Name = "Label3"
        Me.Label3.RightToLeft = System.Windows.Forms.RightToLeft.Yes
        Me.Label3.Size = New System.Drawing.Size(214, 26)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "欢迎使用记帐管理系统"
        Me.Label3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'TextBox1
        '
        Me.TextBox1.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox1.Location = New System.Drawing.Point(128, 64)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(120, 23)
        Me.TextBox1.TabIndex = 1
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox2.Location = New System.Drawing.Point(128, 112)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox2.Size = New System.Drawing.Size(120, 23)
        Me.TextBox2.TabIndex = 3
        Me.TextBox2.Text = ""
        '
        'Button1
        '
        Me.Button1.DialogResult = System.Windows.Forms.DialogResult.OK
        Me.Button1.Image = CType(resources.GetObject("Button1.Image"), System.Drawing.Image)
        Me.Button1.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft
        Me.Button1.Location = New System.Drawing.Point(48, 168)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(80, 24)
        Me.Button1.TabIndex = 4
        Me.Button1.Text = " 登  陆"
        '
        'Button2
        '
        Me.Button2.DialogResult = System.Windows.Forms.DialogResult.Cancel
        Me.Button2.Image = CType(resources.GetObject("Button2.Image"), System.Drawing.Image)
        Me.Button2.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft
        Me.Button2.Location = New System.Drawing.Point(168, 168)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(80, 24)
        Me.Button2.TabIndex = 5
        Me.Button2.Text = " 取  消"
        '
        'login
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.BackColor = System.Drawing.SystemColors.InactiveCaptionText
        Me.ClientSize = New System.Drawing.Size(292, 216)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.MaximizeBox = False
        Me.Name = "login"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "登陆"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim i As Integer
        Dim UserName, UserPwd As String
        Dim flag As Boolean
        flag = False
        UserName = LTrim(Me.TextBox1.Text)
        UserPwd = LTrim(Me.TextBox2.Text)
        MyRs.MoveFirst()
        For i = 0 To MyRs.RecordCount - 1
            If UserName = MyRs.Fields(1).Value Then
                If UserPwd = MyRs.Fields(2).Value Then
                    MessageBox.Show("登陆成功!", "登陆信息", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.ServiceNotification)
                    flag = True
                    User权限 = MyRs.Fields(3).Value.ToString
                    UserId = MyRs.Fields(0).Value.ToString
                    usn = MyRs.Fields(1).Value.ToString
                    Exit For
                End If
            End If
            MyRs.MoveNext()
        Next
        If Not flag Then
            MessageBox.Show("登陆失败!", "登陆信息", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1, MessageBoxOptions.ServiceNotification)
            Me.TextBox2.Text = ""
            Me.TextBox2.Focus()
        Else
            Me.Hide()
            Dim f As mainform
            f = New mainform
            f.ShowDialog()
        End If
    End Sub
    Private Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
        End
    End Sub

    Private Sub TextBox2_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox2.KeyUp
        If e.KeyCode = Keys.Enter Then
            Me.Button1_Click(sender, e)
        ElseIf e.KeyCode = Keys.Escape Then
            Me.Button2_Click(sender, e)
        End If
    End Sub

    Private Sub login_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        MyCnn = New ADODB.Connection
        strCnn = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=" + CurDir() + "\jzgl.mdb"
        MyCnn.Open(strCnn)
        MyRs = New ADODB.Recordset
        MyRs.Open("select * from 用户", MyCnn, ADODB.CursorTypeEnum.adOpenStatic, ADODB.LockTypeEnum.adLockOptimistic)
    End Sub
End Class