frmmain.vb

图书管理系统,可以实现图书的增加,删除,修改,也可以实现用户的增加,删除,修改.

Public Class Form1
    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 DataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents OleDbConnection1 As System.Data.OleDb.OleDbConnection
    Friend WithEvents OleDbDataAdapter1 As System.Data.OleDb.OleDbDataAdapter
    Friend WithEvents OleDbSelectCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbInsertCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbUpdateCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbDeleteCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents DataSet11 As Library2.DataSet1
    Friend WithEvents MainMenu1 As System.Windows.Forms.MainMenu
    Friend WithEvents mnuOption As System.Windows.Forms.MenuItem
    Friend WithEvents mnuNewUser As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem3 As System.Windows.Forms.MenuItem
    Friend WithEvents mnuUserAll As System.Windows.Forms.MenuItem
    Friend WithEvents mnuBook As System.Windows.Forms.MenuItem
    Friend WithEvents mnuBookCanBorrow As System.Windows.Forms.MenuItem
    Friend WithEvents mnuBookBorrowed As System.Windows.Forms.MenuItem
    Friend WithEvents mnuBorrow As System.Windows.Forms.MenuItem
    Friend WithEvents mnuMyBook As System.Windows.Forms.MenuItem
    Friend WithEvents MenuItem7 As System.Windows.Forms.MenuItem
    Friend WithEvents mnuExit As System.Windows.Forms.MenuItem
    Friend WithEvents mnuHelp As System.Windows.Forms.MenuItem
    Friend WithEvents mnuHelpChm As System.Windows.Forms.MenuItem
    Friend WithEvents mnuAbout As System.Windows.Forms.MenuItem
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.DataGrid1 = New System.Windows.Forms.DataGrid
        Me.OleDbConnection1 = New System.Data.OleDb.OleDbConnection
        Me.OleDbDataAdapter1 = New System.Data.OleDb.OleDbDataAdapter
        Me.OleDbSelectCommand1 = New System.Data.OleDb.OleDbCommand
        Me.OleDbInsertCommand1 = New System.Data.OleDb.OleDbCommand
        Me.OleDbUpdateCommand1 = New System.Data.OleDb.OleDbCommand
        Me.OleDbDeleteCommand1 = New System.Data.OleDb.OleDbCommand
        Me.DataSet11 = New Library2.DataSet1
        Me.MainMenu1 = New System.Windows.Forms.MainMenu
        Me.mnuOption = New System.Windows.Forms.MenuItem
        Me.mnuNewUser = New System.Windows.Forms.MenuItem
        Me.MenuItem3 = New System.Windows.Forms.MenuItem
        Me.mnuUserAll = New System.Windows.Forms.MenuItem
        Me.mnuBook = New System.Windows.Forms.MenuItem
        Me.mnuBookCanBorrow = New System.Windows.Forms.MenuItem
        Me.mnuBookBorrowed = New System.Windows.Forms.MenuItem
        Me.mnuBorrow = New System.Windows.Forms.MenuItem
        Me.mnuMyBook = New System.Windows.Forms.MenuItem
        Me.MenuItem7 = New System.Windows.Forms.MenuItem
        Me.mnuExit = New System.Windows.Forms.MenuItem
        Me.mnuHelp = New System.Windows.Forms.MenuItem
        Me.mnuHelpChm = New System.Windows.Forms.MenuItem
        Me.mnuAbout = New System.Windows.Forms.MenuItem
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.DataSet11, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'DataGrid1
        '
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(16, 8)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(464, 288)
        Me.DataGrid1.TabIndex = 0
        '
        'OleDbConnection1
        '
        Me.OleDbConnection1.ConnectionString = "Jet OLEDB:Global Partial Bulk Ops=2;Jet OLEDB:Registry Path=;Jet OLEDB:Database L" & _
        "ocking Mode=1;Data Source=""D:\vb\Library2\bin\library.mdb"";Mode=Share Deny None;" & _
        "Jet OLEDB:Engine Type=5;Provider=""Microsoft.Jet.OLEDB.4.0"";Jet OLEDB:System data" & _
        "base=;Jet OLEDB:SFP=False;persist security info=False;Extended Properties=;Jet O" & _
        "LEDB:Compact Without Replica Repair=False;Jet OLEDB:Encrypt Database=False;Jet O" & _
        "LEDB:Create System Database=False;Jet OLEDB:Don't Copy Locale on Compact=False;U" & _
        "ser ID=Admin;Jet OLEDB:Global Bulk Transactions=1"
        '
        'OleDbDataAdapter1
        '
        Me.OleDbDataAdapter1.DeleteCommand = Me.OleDbDeleteCommand1
        Me.OleDbDataAdapter1.InsertCommand = Me.OleDbInsertCommand1
        Me.OleDbDataAdapter1.SelectCommand = Me.OleDbSelectCommand1
        Me.OleDbDataAdapter1.TableMappings.AddRange(New System.Data.Common.DataTableMapping() {New System.Data.Common.DataTableMapping("Table", "user_info", New System.Data.Common.DataColumnMapping() {New System.Data.Common.DataColumnMapping("emailid", "emailid"), New System.Data.Common.DataColumnMapping("lend", "lend"), New System.Data.Common.DataColumnMapping("password", "password"), New System.Data.Common.DataColumnMapping("userid", "userid"), New System.Data.Common.DataColumnMapping("username", "username")})})
        Me.OleDbDataAdapter1.UpdateCommand = Me.OleDbUpdateCommand1
        '
        'OleDbSelectCommand1
        '
        Me.OleDbSelectCommand1.CommandText = "SELECT emailid, lend, [password], userid, username FROM user_info"
        Me.OleDbSelectCommand1.Connection = Me.OleDbConnection1
        '
        'OleDbInsertCommand1
        '
        Me.OleDbInsertCommand1.CommandText = "INSERT INTO user_info(emailid, lend, [password], username) VALUES (?, ?, ?, ?)"
        Me.OleDbInsertCommand1.Connection = Me.OleDbConnection1
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("emailid", System.Data.OleDb.OleDbType.VarWChar, 50, "emailid"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("lend", System.Data.OleDb.OleDbType.Single, 0, "lend"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("password", System.Data.OleDb.OleDbType.VarWChar, 50, "password"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("username", System.Data.OleDb.OleDbType.VarWChar, 50, "username"))
        '
        'OleDbUpdateCommand1
        '
        Me.OleDbUpdateCommand1.CommandText = "UPDATE user_info SET emailid = ?, lend = ?, [password] = ?, username = ? WHERE (u" & _
        "serid = ?) AND (emailid = ? OR ? IS NULL AND emailid IS NULL) AND (lend = ? OR ?" & _
        " IS NULL AND lend IS NULL) AND ([password] = ? OR ? IS NULL AND [password] IS NU" & _
        "LL) AND (username = ? OR ? IS NULL AND username IS NULL)"
        Me.OleDbUpdateCommand1.Connection = Me.OleDbConnection1
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("emailid", System.Data.OleDb.OleDbType.VarWChar, 50, "emailid"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("lend", System.Data.OleDb.OleDbType.Single, 0, "lend"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("password", System.Data.OleDb.OleDbType.VarWChar, 50, "password"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("username", System.Data.OleDb.OleDbType.VarWChar, 50, "username"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_userid", System.Data.OleDb.OleDbType.Integer, 0, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "userid", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_emailid", System.Data.OleDb.OleDbType.VarWChar, 50, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "emailid", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_emailid1", System.Data.OleDb.OleDbType.VarWChar, 50, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "emailid", System.Data.DataRowVersion.Original, Nothing))