form3.vb

大学生记帐管理系统

Public Class user
    Inherits System.Windows.Forms.Form
    Dim UserRs As ADODB.Recordset
    Dim UserRs1 As ADODB.Recordset


#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 ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Button4 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(user))
        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.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.ListBox1 = New System.Windows.Forms.ListBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.Button4 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.Location = New System.Drawing.Point(24, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(63, 19)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "用户名："
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'Label2
        '
        Me.Label2.AutoSize = True
        Me.Label2.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label2.Location = New System.Drawing.Point(24, 64)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(56, 19)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "密 码："
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'Label3
        '
        Me.Label3.AutoSize = True
        Me.Label3.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label3.Location = New System.Drawing.Point(24, 112)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(56, 19)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "权 限："
        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(88, 24)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(88, 23)
        Me.TextBox1.TabIndex = 3
        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(88, 64)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(88, 23)
        Me.TextBox2.TabIndex = 4
        Me.TextBox2.Text = ""
        '
        'ComboBox1
        '
        Me.ComboBox1.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.ComboBox1.Location = New System.Drawing.Point(88, 112)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(88, 22)
        Me.ComboBox1.TabIndex = 5
        Me.ComboBox1.Text = "管理员"
        '
        'ListBox1
        '
        Me.ListBox1.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.ListBox1.ItemHeight = 14
        Me.ListBox1.Location = New System.Drawing.Point(32, 152)
        Me.ListBox1.Name = "ListBox1"
        Me.ListBox1.Size = New System.Drawing.Size(152, 74)
        Me.ListBox1.TabIndex = 6
        '
        'Button1
        '
        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(192, 24)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(72, 24)
        Me.Button1.TabIndex = 7
        Me.Button1.Text = "  添 加"
        '
        'Button2
        '
        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(192, 80)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(72, 24)
        Me.Button2.TabIndex = 8
        Me.Button2.Text = "  删 除"
        '
        'Button3
        '
        Me.Button3.Image = CType(resources.GetObject("Button3.Image"), System.Drawing.Image)
        Me.Button3.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft
        Me.Button3.Location = New System.Drawing.Point(192, 136)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(72, 24)
        Me.Button3.TabIndex = 9
        Me.Button3.Text = "  修 改"
        '
        'Button4
        '
        Me.Button4.Image = CType(resources.GetObject("Button4.Image"), System.Drawing.Image)
        Me.Button4.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft
        Me.Button4.Location = New System.Drawing.Point(192, 192)
        Me.Button4.Name = "Button4"
        Me.Button4.Size = New System.Drawing.Size(72, 24)
        Me.Button4.TabIndex = 10
        Me.Button4.Text = "  关 闭"
        '
        'user
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.BackColor = System.Drawing.Color.MediumTurquoise
        Me.ClientSize = New System.Drawing.Size(280, 246)
        Me.Controls.Add(Me.Button4)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.ListBox1)
        Me.Controls.Add(Me.ComboBox1)
        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.Name = "user"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "用户信息"
        Me.TopMost = True
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        UserRs.Close()
        UserRs = Nothing
        Me.Hide()
    End Sub

    Private Sub user_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        UserRs = New ADODB.Recordset
        UserRs.Open("select * from 用户", MyCnn, ADODB.CursorTypeEnum.adOpenStatic, ADODB.LockTypeEnum.adLockOptimistic)
        Me.ListBox1.Items.Clear()
        UserRs.MoveFirst()
        Dim i As Integer
        For i = 0 To UserRs.RecordCount - 1
            Me.ListBox1.Items.Add(UserRs.Fields(1).Value)
            UserRs.MoveNext()
        Next
        Me.Button2.Enabled = False
        Me.Button3.Enabled = False
        Me.ComboBox1.Items.Add("管理员")
        Me.ComboBox1.Items.Add("普通用户")
    End Sub

    Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
        Dim i As Integer
        UserRs.MoveFirst()
        For i = 0 To UserRs.RecordCount - 1
            If UserRs.Fields(1).Value.ToString = ListBox1.SelectedItem Then
                Exit For
            End If
            UserRs.MoveNext()
        Next
        Me.TextBox1.Text = UserRs.Fields(1).Value.ToString
        Me.TextBox2.Text = UserRs.Fields(2).Value.ToString
        Me.ComboBox1.Text = UserRs.Fields(3).Value.ToString
        Me.Button2.Enabled = True
        Me.Button3.Enabled = True
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Dim i As Integer
        UserRs.Fields(1).Value = Me.TextBox1.Text
        UserRs.Fields(2).Value = Me.TextBox2.Text
        UserRs.Fields(3).Value = Me.ComboBox1.Text
        UserRs.Update()
        MessageBox.Show("用户" + Me.TextBox1.Text + "资料修改成功！")
        ListBox1.Items.Clear()
        UserRs.MoveFirst()
        For i = 0 To UserRs.RecordCount - 1
            Me.ListBox1.Items.Add(UserRs.Fields(1).Value)
            UserRs.MoveNext()
        Next
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim i As Integer
        For i = 0 To UserRs.RecordCount - 1
            If Me.TextBox1.Text = ListBox1.Items(i) Then
                MessageBox.Show("该用户已经存在，请重新输入用户名！")
                Exit Sub
            End If
        Next
        If Me.TextBox1.Text = "" Then
            MessageBox.Show("用户名不能为空！")
        ElseIf Me.TextBox2.Text = "" Then
            MessageBox.Show("密码不能为空！")
        Else
            UserRs.AddNew()
            UserRs.Fields(1).Value = Trim(Me.TextBox1.Text)
            UserRs.Fields(2).Value = Trim(Me.TextBox2.Text)
            UserRs.Fields(3).Value = Me.ComboBox1.Text
            UserRs.Update()
            MessageBox.Show("用户" + Me.TextBox1.Text + "添加成功！")
        End If
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim i As Integer
        UserRs.MoveFirst()
        For i = 0 To UserRs.RecordCount - 1
            If UserRs.Fields(1).Value.ToString = Me.TextBox1.Text Then
                Exit For
            End If
            UserRs.MoveNext()
        Next
        UserRs.Delete()
        UserRs.Update()
        Me.TextBox1.Text = ""
        Me.TextBox2.Text = ""
        Me.ComboBox1.Text = ""
        ListBox1.Items.Clear()
        UserRs.MoveFirst()
        For i = 0 To UserRs.RecordCount - 1
            Me.ListBox1.Items.Add(UserRs.Fields(1).Value)
            UserRs.MoveNext()
        Next
    End Sub

    Private Sub user_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Activated
        UserRs1 = New ADODB.Recordset
        UserRs1.Open("select * from 用户", MyCnn, ADODB.CursorTypeEnum.adOpenStatic, ADODB.LockTypeEnum.adLockOptimistic)
        Me.ListBox1.Items.Clear()
        UserRs1.MoveFirst()
        Dim i As Integer
        For i = 0 To UserRs1.RecordCount - 1
            Me.ListBox1.Items.Add(UserRs1.Fields(1).Value)
            UserRs1.MoveNext()
        Next
    End Sub
End Class