form1.vb

一个工资管理系统

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 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
    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    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 OleDbConnection1 As System.Data.OleDb.OleDbConnection
    Friend WithEvents Ds2 As WindowsApplication1.ds2
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        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.GroupBox1 = New System.Windows.Forms.GroupBox
        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.OleDbConnection1 = New System.Data.OleDb.OleDbConnection
        Me.Ds2 = New WindowsApplication1.ds2
        CType(Me.Ds2, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("宋体", 14.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.Location = New System.Drawing.Point(64, 8)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(264, 32)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "系统登录 "
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'Label2
        '
        Me.Label2.Font = New System.Drawing.Font("宋体", 11.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label2.Location = New System.Drawing.Point(48, 64)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(152, 30)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "用户名"
        '
        'Label3
        '
        Me.Label3.Font = New System.Drawing.Font("宋体", 11.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label3.Location = New System.Drawing.Point(48, 120)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(152, 30)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "密码"
        '
        'TextBox1
        '
        Me.TextBox1.AutoSize = False
        Me.TextBox1.DataBindings.Add(New System.Windows.Forms.Binding("Text", Me.Ds2, "用户表.用户名"))
        Me.TextBox1.Font = New System.Drawing.Font("宋体", 11.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox1.Location = New System.Drawing.Point(224, 64)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(168, 30)
        Me.TextBox1.TabIndex = 3
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.AutoSize = False
        Me.TextBox2.DataBindings.Add(New System.Windows.Forms.Binding("Text", Me.Ds2, "用户表.密码"))
        Me.TextBox2.Font = New System.Drawing.Font("宋体", 11.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.TextBox2.Location = New System.Drawing.Point(224, 120)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(168, 30)
        Me.TextBox2.TabIndex = 4
        Me.TextBox2.Text = ""
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(112, 176)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(96, 24)
        Me.Button1.TabIndex = 5
        Me.Button1.Text = "登录"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(232, 176)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(96, 24)
        Me.Button2.TabIndex = 6
        Me.Button2.Text = "退出"
        '
        'GroupBox1
        '
        Me.GroupBox1.Location = New System.Drawing.Point(16, 48)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(392, 120)
        Me.GroupBox1.TabIndex = 7
        Me.GroupBox1.TabStop = False
        '
        '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", "用户表", New System.Data.Common.DataColumnMapping() {New System.Data.Common.DataColumnMapping("密码", "密码"), New System.Data.Common.DataColumnMapping("用户名", "用户名")})})
        Me.OleDbDataAdapter1.UpdateCommand = Me.OleDbUpdateCommand1
        '
        'OleDbSelectCommand1
        '
        Me.OleDbSelectCommand1.CommandText = "SELECT 密码, 用户名 FROM 用户表"
        Me.OleDbSelectCommand1.Connection = Me.OleDbConnection1
        '
        'OleDbInsertCommand1
        '
        Me.OleDbInsertCommand1.CommandText = "INSERT INTO 用户表(密码, 用户名) VALUES (?, ?)"
        Me.OleDbInsertCommand1.Connection = Me.OleDbConnection1
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("密码", System.Data.OleDb.OleDbType.VarWChar, 12, "密码"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("用户名", System.Data.OleDb.OleDbType.VarWChar, 12, "用户名"))
        '
        'OleDbUpdateCommand1
        '
        Me.OleDbUpdateCommand1.CommandText = "UPDATE 用户表 SET 密码 = ?, 用户名 = ? WHERE (用户名 = ?) AND (密码 = ? OR ? IS NULL AND 密码 IS" & _
        " NULL)"
        Me.OleDbUpdateCommand1.Connection = Me.OleDbConnection1
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("密码", System.Data.OleDb.OleDbType.VarWChar, 12, "密码"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("用户名", System.Data.OleDb.OleDbType.VarWChar, 12, "用户名"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_用户名", System.Data.OleDb.OleDbType.VarWChar, 12, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "用户名", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_密码", System.Data.OleDb.OleDbType.VarWChar, 12, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "密码", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_密码1", System.Data.OleDb.OleDbType.VarWChar, 12, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "密码", System.Data.DataRowVersion.Original, Nothing))
        '
        'OleDbDeleteCommand1
        '
        Me.OleDbDeleteCommand1.CommandText = "DELETE FROM 用户表 WHERE (用户名 = ?) AND (密码 = ? OR ? IS NULL AND 密码 IS NULL)"
        Me.OleDbDeleteCommand1.Connection = Me.OleDbConnection1
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_用户名", System.Data.OleDb.OleDbType.VarWChar, 12, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "用户名", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_密码", System.Data.OleDb.OleDbType.VarWChar, 12, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "密码", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_密码1", System.Data.OleDb.OleDbType.VarWChar, 12, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "密码", System.Data.DataRowVersion.Original, Nothing))
        '
        'OleDbConnection1
        '
        Me.OleDbConnection1.ConnectionString = "Jet OLEDB:Global Partial Bulk Ops=2;Jet OLEDB:Registry Path=;Jet OLEDB:Database L" & _
        "ocking Mode=1;Jet OLEDB:Database Password=;Data Source=""C:\Documents and Setting" & _
        "s\hp\桌面\WindowsApplication1\work1.mdb"";Password=;Jet OLEDB:Engine Type=5;Jet OLE" & _
        "DB:Global Bulk Transactions=1;Provider=""Microsoft.Jet.OLEDB.4.0"";Jet OLEDB:Syste" & _
        "m database=;Jet OLEDB:SFP=False;Extended Properties=;Mode=Share Deny None;Jet OL" & _
        "EDB:New Database Password=;Jet OLEDB:Create System Database=False;Jet OLEDB:Don'" & _
        "t Copy Locale on Compact=False;Jet OLEDB:Compact Without Replica Repair=False;Us" & _
        "er ID=Admin;Jet OLEDB:Encrypt Database=False"
        '
        'Ds2
        '
        Me.Ds2.DataSetName = "ds2"
        Me.Ds2.Locale = New System.Globalization.CultureInfo("zh-CN")
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(440, 230)
        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.Controls.Add(Me.GroupBox1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        CType(Me.Ds2, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If TextBox1.Text <> "" And TextBox2.Text <> "" Then
            If TextBox1.Text = "zhang" Then
                If TextBox2.Text = "123" Then
                    Dim dl As New Form4
                    dl.ShowDialog()
                Else
                    MsgBox("密码错误！")
                End If
            Else
                MsgBox("用户名错误！")
            End If
        Else
            MsgBox("用户名或密码不能为空!")
        End If
        Dim i As Integer
        Me.BindingContext(Ds2, "用户表").Position = 0
        For i = 0 To Me.BindingContext(Ds2, "用户表").Count() - 1
            If Not Me.BindingContext(Ds2, "用户表").Current.GetType() Is GetType(DataRowView) Then
                Exit For
            End If
            Dim drv As DataRowView = CType(Me.BindingContext(Ds2, "用户表").Current, DataRowView)
            If Trim(drv("用户名")) = TextBox1.Text Then
                If Trim(drv("密码")) = TextBox2.Text Then
                    Dim dlg As New Form4
                    dlg.ShowDialog()
                Else
                    MessageBox.Show("登录失败!", "登录", MessageBoxButtons.OK, MessageBoxIcon.Stop)
                End If
            End If
            Me.BindingContext(Ds2, "用户表").Position = Me.BindingContext(Ds2, "用户表").Position + 1
        Next

    End Sub


    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged

    End Sub
End Class