添加用户示例

作者:admin 日期:2008-06-01

字体大小: 小中大

Imports System.Data.OleDb
Public Class frm_AddUser
    Inherits System.Windows.Forms.Form
    Dim MyConnection As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Application.StartupPath & "\library.mdb")
    Dim MyCommand As OleDbCommand
    Dim MyReader As OleDbDataReader
#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

    '窗体重写处置以清理组件列表。
    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 TxtPassword As System.Windows.Forms.TextBox
    Friend WithEvents TxtUserID As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents BtCancel As System.Windows.Forms.Button
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents TxtName As System.Windows.Forms.TextBox
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents Label6 As System.Windows.Forms.Label
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents ComboLib As System.Windows.Forms.ComboBox
    Friend WithEvents ComboAdmin As System.Windows.Forms.ComboBox
    Friend WithEvents ComboGeneral As System.Windows.Forms.ComboBox
    Friend WithEvents Label11 As System.Windows.Forms.Label
    Friend WithEvents Label7 As System.Windows.Forms.Label
    Friend WithEvents Label8 As System.Windows.Forms.Label
    Friend WithEvents Label9 As System.Windows.Forms.Label
    Friend WithEvents Label10 As System.Windows.Forms.Label
    Friend WithEvents TxtAddress As System.Windows.Forms.TextBox
    Friend WithEvents TxtPhone As System.Windows.Forms.TextBox
    Friend WithEvents TxtCellPhone As System.Windows.Forms.TextBox
    Friend WithEvents TxtEmail As System.Windows.Forms.TextBox
    Friend WithEvents ComboStatus As System.Windows.Forms.ComboBox
    Friend WithEvents BtOK As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.TxtPassword = New System.Windows.Forms.TextBox
        Me.TxtUserID = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.BtCancel = New System.Windows.Forms.Button
        Me.BtOK = New System.Windows.Forms.Button
        Me.Label3 = New System.Windows.Forms.Label
        Me.TxtName = New System.Windows.Forms.TextBox
        Me.Label4 = New System.Windows.Forms.Label
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.ComboGeneral = New System.Windows.Forms.ComboBox
        Me.Label11 = New System.Windows.Forms.Label
        Me.ComboLib = New System.Windows.Forms.ComboBox
        Me.ComboAdmin = New System.Windows.Forms.ComboBox
        Me.Label6 = New System.Windows.Forms.Label
        Me.Label5 = New System.Windows.Forms.Label
        Me.Label7 = New System.Windows.Forms.Label
        Me.Label8 = New System.Windows.Forms.Label
        Me.Label9 = New System.Windows.Forms.Label
        Me.Label10 = New System.Windows.Forms.Label
        Me.TxtAddress = New System.Windows.Forms.TextBox
        Me.TxtPhone = New System.Windows.Forms.TextBox
        Me.TxtCellPhone = New System.Windows.Forms.TextBox
        Me.TxtEmail = New System.Windows.Forms.TextBox
        Me.ComboStatus = New System.Windows.Forms.ComboBox
        Me.GroupBox1.SuspendLayout()
        Me.SuspendLayout()
        '
        'TxtPassword
        '
        Me.TxtPassword.Location = New System.Drawing.Point(77, 53)
        Me.TxtPassword.MaxLength = 10
        Me.TxtPassword.Name = "TxtPassword"
        Me.TxtPassword.Size = New System.Drawing.Size(120, 21)
        Me.TxtPassword.TabIndex = 11
        '
        'TxtUserID
        '
        Me.TxtUserID.Location = New System.Drawing.Point(77, 15)
        Me.TxtUserID.MaxLength = 10
        Me.TxtUserID.Name = "TxtUserID"
        Me.TxtUserID.Size = New System.Drawing.Size(120, 21)
        Me.TxtUserID.TabIndex = 10
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(23, 57)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(48, 24)
        Me.Label2.TabIndex = 9
        Me.Label2.Text = "密码"
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(15, 18)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(56, 24)
        Me.Label1.TabIndex = 8
        Me.Label1.Text = "用户编号"
        '
        'BtCancel
        '
        Me.BtCancel.Location = New System.Drawing.Point(231, 327)
        Me.BtCancel.Name = "BtCancel"
        Me.BtCancel.Size = New System.Drawing.Size(95, 24)
        Me.BtCancel.TabIndex = 7
        Me.BtCancel.Text = "关闭"
        '
        'BtOK
        '
        Me.BtOK.Location = New System.Drawing.Point(78, 327)
        Me.BtOK.Name = "BtOK"
        Me.BtOK.Size = New System.Drawing.Size(92, 24)
        Me.BtOK.TabIndex = 6
        Me.BtOK.Text = "确定"
        '
        'Label3
        '
        Me.Label3.AutoSize = True
        Me.Label3.Location = New System.Drawing.Point(216, 21)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(53, 12)
        Me.Label3.TabIndex = 12
        Me.Label3.Text = "用户姓名"
        '
        'TxtName
        '
        Me.TxtName.Location = New System.Drawing.Point(287, 15)
        Me.TxtName.Name = "TxtName"
        Me.TxtName.Size = New System.Drawing.Size(120, 21)
        Me.TxtName.TabIndex = 13
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(233, 62)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(48, 24)
        Me.Label4.TabIndex = 14
        Me.Label4.Text = "状态"
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.ComboGeneral)
        Me.GroupBox1.Controls.Add(Me.Label11)
        Me.GroupBox1.Controls.Add(Me.ComboLib)
        Me.GroupBox1.Controls.Add(Me.ComboAdmin)
        Me.GroupBox1.Controls.Add(Me.Label6)
        Me.GroupBox1.Controls.Add(Me.Label5)
        Me.GroupBox1.Location = New System.Drawing.Point(11, 169)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(398, 146)
        Me.GroupBox1.TabIndex = 16
        Me.GroupBox1.TabStop = False
        Me.GroupBox1.Text = "权限设置"
        '
        'ComboGeneral
        '
        Me.ComboGeneral.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboGeneral.FormattingEnabled = True
        Me.ComboGeneral.Items.AddRange(New Object() {"是", "否"})
        Me.ComboGeneral.Location = New System.Drawing.Point(122, 103)
        Me.ComboGeneral.Name = "ComboGeneral"
        Me.ComboGeneral.Size = New System.Drawing.Size(252, 20)
        Me.ComboGeneral.TabIndex = 5
        '
        'Label11
        '
        Me.Label11.AutoSize = True
        Me.Label11.Location = New System.Drawing.Point(15, 106)
        Me.Label11.Name = "Label11"
        Me.Label11.Size = New System.Drawing.Size(89, 12)
        Me.Label11.TabIndex = 4
        Me.Label11.Text = "一般管理员权限"
        '
        'ComboLib
        '
        Me.ComboLib.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboLib.FormattingEnabled = True
        Me.ComboLib.Items.AddRange(New Object() {"是", "否"})
        Me.ComboLib.Location = New System.Drawing.Point(122, 65)
        Me.ComboLib.Name = "ComboLib"
        Me.ComboLib.Size = New System.Drawing.Size(252, 20)
        Me.ComboLib.TabIndex = 3
        '
        'ComboAdmin
        '
        Me.ComboAdmin.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboAdmin.FormattingEnabled = True
        Me.ComboAdmin.Items.AddRange(New Object() {"是", "否"})
        Me.ComboAdmin.Location = New System.Drawing.Point(120, 28)
        Me.ComboAdmin.Name = "ComboAdmin"
        Me.ComboAdmin.Size = New System.Drawing.Size(254, 20)
        Me.ComboAdmin.TabIndex = 2
        '
        'Label6
        '
        Me.Label6.AutoSize = True
        Me.Label6.Location = New System.Drawing.Point(17, 68)
        Me.Label6.Name = "Label6"
        Me.Label6.Size = New System.Drawing.Size(89, 12)
        Me.Label6.TabIndex = 1
        Me.Label6.Text = "图书管理员权限"
        '
        'Label5
        '
        Me.Label5.AutoSize = True
        Me.Label5.Location = New System.Drawing.Point(16, 31)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(89, 12)
        Me.Label5.TabIndex = 0
        Me.Label5.Text = "系统管理员权限"
        '
        'Label7
        '
        Me.Label7.Location = New System.Drawing.Point(23, 100)
        Me.Label7.Name = "Label7"
        Me.Label7.Size = New System.Drawing.Size(48, 24)
        Me.Label7.TabIndex = 17
        Me.Label7.Text = "地址"
        '
        'Label8
        '
        Me.Label8.Location = New System.Drawing.Point(233, 100)
        Me.Label8.Name = "Label8"
        Me.Label8.Size = New System.Drawing.Size(48, 24)
        Me.Label8.TabIndex = 18
        Me.Label8.Text = "电话"
        '
        'Label9
        '
        Me.Label9.Location = New System.Drawing.Point(23, 135)
        Me.Label9.Name = "Label9"
        Me.Label9.Size = New System.Drawing.Size(48, 24)
        Me.Label9.TabIndex = 19
        Me.Label9.Text = "手机"
        '
        'Label10
        '
        Me.Label10.Location = New System.Drawing.Point(233, 135)
        Me.Label10.Name = "Label10"
        Me.Label10.Size = New System.Drawing.Size(48, 24)
        Me.Label10.TabIndex = 20
        Me.Label10.Text = "Email"
        '
        'TxtAddress
        '
        Me.TxtAddress.Location = New System.Drawing.Point(77, 97)
        Me.TxtAddress.MaxLength = 10
        Me.TxtAddress.Name = "TxtAddress"
        Me.TxtAddress.Size = New System.Drawing.Size(120, 21)
        Me.TxtAddress.TabIndex = 21
        '
        'TxtPhone
        '
        Me.TxtPhone.Location = New System.Drawing.Point(287, 97)
        Me.TxtPhone.MaxLength = 10
        Me.TxtPhone.Name = "TxtPhone"
        Me.TxtPhone.Size = New System.Drawing.Size(120, 21)
        Me.TxtPhone.TabIndex = 22
        '
        'TxtCellPhone
        '
        Me.TxtCellPhone.Location = New System.Drawing.Point(77, 132)
        Me.TxtCellPhone.MaxLength = 10
        Me.TxtCellPhone.Name = "TxtCellPhone"
        Me.TxtCellPhone.Size = New System.Drawing.Size(120, 21)
        Me.TxtCellPhone.TabIndex = 23
        '
        'TxtEmail
        '
        Me.TxtEmail.Location = New System.Drawing.Point(289, 135)
        Me.TxtEmail.MaxLength = 10
        Me.TxtEmail.Name = "TxtEmail"
        Me.TxtEmail.Size = New System.Drawing.Size(120, 21)
        Me.TxtEmail.TabIndex = 24
        '
        'ComboStatus
        '
        Me.ComboStatus.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboStatus.FormattingEnabled = True
        Me.ComboStatus.Items.AddRange(New Object() {"正常", "冻结"})
        Me.ComboStatus.Location = New System.Drawing.Point(287, 55)
        Me.ComboStatus.Name = "ComboStatus"
        Me.ComboStatus.Size = New System.Drawing.Size(120, 20)
        Me.ComboStatus.TabIndex = 25
        '
        'frm_AddUser
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(419, 361)
        Me.Controls.Add(Me.ComboStatus)
        Me.Controls.Add(Me.TxtEmail)
        Me.Controls.Add(Me.TxtCellPhone)
        Me.Controls.Add(Me.TxtPhone)
        Me.Controls.Add(Me.TxtAddress)
        Me.Controls.Add(Me.Label10)
        Me.Controls.Add(Me.Label9)
        Me.Controls.Add(Me.Label8)
        Me.Controls.Add(Me.Label7)
        Me.Controls.Add(Me.GroupBox1)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.TxtName)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.TxtPassword)
        Me.Controls.Add(Me.TxtUserID)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.BtCancel)
        Me.Controls.Add(Me.BtOK)
        Me.MaximizeBox = False
        Me.MinimizeBox = False
        Me.Name = "frm_AddUser"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent
        Me.Text = "添加用户信息"
        Me.GroupBox1.ResumeLayout(False)
        Me.GroupBox1.PerformLayout()
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub

#End Region

    Private Sub BtCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtCancel.Click
        Me.Close()
    End Sub

    Sub addUser()
        MyConnection.Open()
        MyCommand = New OleDbCommand("Insert INTO SystemUsers VALUES('" & TxtUserID.Text & "','" & TxtName.Text & "','" & TxtPassword.Text & "','" & ComboStatus.Text & "','" & TxtAddress.Text & "','" & TxtPhone.Text & "','" & TxtCellPhone.Text & "','" & TxtEmail.Text & "','" & ComboAdmin.Text & "','" & ComboLib.Text & "','" & ComboGeneral.Text & "')", MyConnection)
        MyCommand.ExecuteNonQuery()
        MyConnection.Close()
        MyCommand.Dispose()
    End Sub
    Function checkIfAlreadyExists() As Boolean
        Dim temp As String
        MyConnection.Open()
        MyCommand = New OleDbCommand("Select * FROM SystemUsers Where UserID='" & TxtUserID.Text & "'", MyConnection)
        MyReader = MyCommand.ExecuteReader()
        While MyReader.Read
            temp = MyReader("UserID")
        End While
        MyConnection.Close()
        MyReader.Close()
        MyCommand.dispose()
        If temp = TxtUserID.Text Then
            Return True
        Else
            If temp <> TxtUserID.Text Then
                Return False
            End If
        End If
    End Function

    Private Sub BtOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtOK.Click
        If Trim(TxtUserID.Text) = "" Then
            displayMsg("输入的用户编号不能为空！")
            Exit Sub
        End If
        If Trim(TxtName.Text) = "" Then
            displayMsg("输入的用户姓名不能为空！")
            Exit Sub
        End If
        If Trim(TxtPassword.Text) = "" Then
            displayMsg("输入的密码不能为空！")
            Exit Sub
        End If
        If checkIfAlreadyExists() = True Then
            displayMsg("用户编号已经存在请重新输入！")
            Exit Sub
        Else
            addUser()
            displayMsg("用户信息已被成功添加到数据库！")
        End If
    End Sub
    Sub displayMsg(ByVal myMsgText As String)
        MsgBox(myMsgText, MsgBoxStyle.Information, "图书管管理系统")
    End Sub

    Private Sub FrmAddUser_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ComboAdmin.SelectedIndex = 0
        ComboLib.SelectedIndex = 0
        ComboGeneral.SelectedIndex = 0
        ComboStatus.SelectedIndex = 0
    End Sub

End Class