formlogin.vb

人事管理系统（VB.NET2005+SQL Server2005）

Imports CommonDB
Imports CommonSystem

Public Class FormLogin
    Inherits System.Windows.Forms.Form

    'Private oUser As User
#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 Panel1 As System.Windows.Forms.Panel
    Friend WithEvents Panel2 As System.Windows.Forms.Panel
    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 cmbUserLevel As System.Windows.Forms.ComboBox
    Friend WithEvents txtUserName As System.Windows.Forms.TextBox
    Friend WithEvents txtPassword As System.Windows.Forms.TextBox
    Friend WithEvents btnLogin As System.Windows.Forms.Button
    Friend WithEvents btnExit As System.Windows.Forms.Button
    Friend WithEvents btnReset As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Panel1 = New System.Windows.Forms.Panel
        Me.txtPassword = New System.Windows.Forms.TextBox
        Me.txtUserName = New System.Windows.Forms.TextBox
        Me.cmbUserLevel = New System.Windows.Forms.ComboBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Panel2 = New System.Windows.Forms.Panel
        Me.btnExit = New System.Windows.Forms.Button
        Me.btnReset = New System.Windows.Forms.Button
        Me.btnLogin = New System.Windows.Forms.Button
        Me.Panel1.SuspendLayout()
        Me.Panel2.SuspendLayout()
        Me.SuspendLayout()
        '
        'Panel1
        '
        Me.Panel1.Controls.Add(Me.txtPassword)
        Me.Panel1.Controls.Add(Me.txtUserName)
        Me.Panel1.Controls.Add(Me.cmbUserLevel)
        Me.Panel1.Controls.Add(Me.Label2)
        Me.Panel1.Controls.Add(Me.Label1)
        Me.Panel1.Controls.Add(Me.Label3)
        Me.Panel1.Location = New System.Drawing.Point(8, 16)
        Me.Panel1.Name = "Panel1"
        Me.Panel1.Size = New System.Drawing.Size(272, 112)
        Me.Panel1.TabIndex = 0
        '
        'txtPassword
        '
        Me.txtPassword.Location = New System.Drawing.Point(112, 80)
        Me.txtPassword.Name = "txtPassword"
        Me.txtPassword.PasswordChar = Global.Microsoft.VisualBasic.ChrW(42)
        Me.txtPassword.Size = New System.Drawing.Size(144, 21)
        Me.txtPassword.TabIndex = 4
        Me.txtPassword.Text = "admin"
        '
        'txtUserName
        '
        Me.txtUserName.Location = New System.Drawing.Point(112, 48)
        Me.txtUserName.Name = "txtUserName"
        Me.txtUserName.Size = New System.Drawing.Size(144, 21)
        Me.txtUserName.TabIndex = 3
        Me.txtUserName.Text = "admin"
        '
        'cmbUserLevel
        '
        Me.cmbUserLevel.Location = New System.Drawing.Point(112, 16)
        Me.cmbUserLevel.Name = "cmbUserLevel"
        Me.cmbUserLevel.Size = New System.Drawing.Size(144, 20)
        Me.cmbUserLevel.TabIndex = 2
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(8, 48)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(100, 23)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "用户名"
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(8, 16)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(100, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "用户级别"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(8, 80)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(100, 23)
        Me.Label3.TabIndex = 1
        Me.Label3.Text = "密  码"
        '
        'Panel2
        '
        Me.Panel2.Controls.Add(Me.btnExit)
        Me.Panel2.Controls.Add(Me.btnReset)
        Me.Panel2.Controls.Add(Me.btnLogin)
        Me.Panel2.Location = New System.Drawing.Point(8, 144)
        Me.Panel2.Name = "Panel2"
        Me.Panel2.Size = New System.Drawing.Size(272, 40)
        Me.Panel2.TabIndex = 0
        '
        'btnExit
        '
        Me.btnExit.DialogResult = System.Windows.Forms.DialogResult.Cancel
        Me.btnExit.Location = New System.Drawing.Point(184, 8)
        Me.btnExit.Name = "btnExit"
        Me.btnExit.Size = New System.Drawing.Size(75, 23)
        Me.btnExit.TabIndex = 2
        Me.btnExit.Text = "退  出"
        '
        'btnReset
        '
        Me.btnReset.Location = New System.Drawing.Point(96, 8)
        Me.btnReset.Name = "btnReset"
        Me.btnReset.Size = New System.Drawing.Size(75, 23)
        Me.btnReset.TabIndex = 1
        Me.btnReset.Text = "重  置"
        '
        'btnLogin
        '
        Me.btnLogin.Location = New System.Drawing.Point(8, 8)
        Me.btnLogin.Name = "btnLogin"
        Me.btnLogin.Size = New System.Drawing.Size(75, 23)
        Me.btnLogin.TabIndex = 0
        Me.btnLogin.Text = "登  录"
        '
        'FormLogin
        '
        Me.AcceptButton = Me.btnLogin
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.CancelButton = Me.btnExit
        Me.ClientSize = New System.Drawing.Size(292, 198)
        Me.ControlBox = False
        Me.Controls.Add(Me.Panel1)
        Me.Controls.Add(Me.Panel2)
        Me.Name = "FormLogin"
        Me.Opacity = 0.8
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "用户登录"
        Me.TopMost = True
        Me.Panel1.ResumeLayout(False)
        Me.Panel1.PerformLayout()
        Me.Panel2.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub InitialData()
        Dim dsUserLevel As DataSet = DbBase.DataInterface.Execute4DS("select id,role from user_level")
        cmbUserLevel.DataSource = dsUserLevel.Tables(0).DefaultView
        cmbUserLevel.DisplayMember = "role"
        cmbUserLevel.ValueMember = "id"
    End Sub

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

    Private Sub btnReset_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnReset.Click
        cmbUserLevel.SelectedIndex = 0
        txtUserName.Text = ""
        txtPassword.Text = ""
    End Sub

    Private Sub FormLogin_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        InitialData()
    End Sub

    Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
        If User.CheckUser(txtUserName.Text, txtPassword.Text, cmbUserLevel.SelectedValue) Then
            Dim oForm As New FormMain
            oForm.Show()
            'Application.Run(New FormMain)
            'Me.Close()
            Me.Hide()
        Else
            MessageBox.Show("用户名、密码错误！")
            txtUserName.Text = ""
            txtPassword.Text = ""
            txtUserName.Focus()
        End If
    End Sub
End Class