form4.vb

首先利用Sql Sever数据库作为后台

Public Class Form4
    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 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 SqlDataAdapter1 As System.Data.SqlClient.SqlDataAdapter
    Friend WithEvents SqlConnection1 As System.Data.SqlClient.SqlConnection
    Friend WithEvents SqlCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlSelectCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlInsertCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents DataSet11 As 门禁管理系统.DataSet1
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = 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.SqlDataAdapter1 = New System.Data.SqlClient.SqlDataAdapter
        Me.SqlInsertCommand1 = New System.Data.SqlClient.SqlCommand
        Me.SqlConnection1 = New System.Data.SqlClient.SqlConnection
        Me.SqlSelectCommand1 = New System.Data.SqlClient.SqlCommand
        Me.SqlCommand1 = New System.Data.SqlClient.SqlCommand
        Me.DataSet11 = New 门禁管理系统.DataSet1
        CType(Me.DataSet11, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.ForeColor = System.Drawing.SystemColors.Desktop
        Me.Label1.Location = New System.Drawing.Point(80, 64)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(136, 40)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "管理员帐号"
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'Label2
        '
        Me.Label2.ForeColor = System.Drawing.SystemColors.Desktop
        Me.Label2.Location = New System.Drawing.Point(72, 168)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(144, 48)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "管理员密码"
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(240, 72)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(112, 21)
        Me.TextBox1.TabIndex = 2
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(240, 176)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox2.Size = New System.Drawing.Size(112, 21)
        Me.TextBox2.TabIndex = 3
        Me.TextBox2.Text = ""
        '
        'Button1
        '
        Me.Button1.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Button1.ForeColor = System.Drawing.SystemColors.Desktop
        Me.Button1.Location = New System.Drawing.Point(120, 264)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(80, 32)
        Me.Button1.TabIndex = 4
        Me.Button1.Text = "确定"
        '
        'Button2
        '
        Me.Button2.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Button2.ForeColor = System.Drawing.SystemColors.Desktop
        Me.Button2.Location = New System.Drawing.Point(304, 264)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(72, 32)
        Me.Button2.TabIndex = 5
        Me.Button2.Text = "取消"
        '
        'SqlDataAdapter1
        '
        Me.SqlDataAdapter1.InsertCommand = Me.SqlInsertCommand1
        Me.SqlDataAdapter1.SelectCommand = Me.SqlSelectCommand1
        Me.SqlDataAdapter1.TableMappings.AddRange(New System.Data.Common.DataTableMapping() {New System.Data.Common.DataTableMapping("Table", "管理员信息", New System.Data.Common.DataColumnMapping() {New System.Data.Common.DataColumnMapping("管理员帐号", "管理员帐号"), New System.Data.Common.DataColumnMapping("密码", "密码")})})
        '
        'SqlInsertCommand1
        '
        Me.SqlInsertCommand1.CommandText = "INSERT INTO 管理员信息(管理员帐号, 密码) VALUES (@管理员帐号, @密码); SELECT 管理员帐号, 密码 FROM 管理员信息"
        Me.SqlInsertCommand1.Connection = Me.SqlConnection1
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@管理员帐号", System.Data.SqlDbType.VarChar, 20, "管理员帐号"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@密码", System.Data.SqlDbType.Float, 8, "密码"))
        '
        'SqlConnection1
        '
        Me.SqlConnection1.ConnectionString = "workstation id=levono03;packet size=4096;integrated security=SSPI;data source=lev" & _
        "ono03;persist security info=False;initial catalog=门禁系统信息"
        '
        'SqlSelectCommand1
        '
        Me.SqlSelectCommand1.CommandText = "SELECT 管理员帐号, 密码 FROM 管理员信息"
        Me.SqlSelectCommand1.Connection = Me.SqlConnection1
        '
        'DataSet11
        '
        Me.DataSet11.DataSetName = "DataSet1"
        Me.DataSet11.Locale = New System.Globalization.CultureInfo("zh-CN")
        '
        'Form4
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(520, 326)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form4"
        Me.Text = "管理员登陆"
        CType(Me.DataSet11, 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
        SqlConnection1.Open()
        SqlCommand1.Connection = SqlConnection1
        SqlCommand1.CommandText = "select * from 管理员信息 where 管理员帐号 ='" & TextBox1.Text & "'"
        SqlCommand1.ExecuteNonQuery()
        DataSet11.Clear()
        SqlConnection1.Close()
        DataSet11.Clear()
        SqlDataAdapter1.SelectCommand.CommandText = "select * from 管理员信息 where 管理员帐号 ='" & TextBox1.Text & "'"
        SqlDataAdapter1.Fill(DataSet11)

        SqlConnection1.Close()
        If TextBox1.Text = "林耿" And TextBox2.Text = "12345" Then
            Dim frm1 As New Form6
            frm1.Show()
            Me.Hide()
        Else
            Dim frm1 As New Form8
            frm1.Show()
            Me.Hide()


        End If
        

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim frm1 As New Form2
        frm1.Show()
        Me.Hide()

    End Sub

    Private Sub Form4_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub
End Class