frmaddmanager.vb

计算机机房管理系统

Public Class FrmAddManager
    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 TxtName 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 BtOK As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.TxtPassword = New System.Windows.Forms.TextBox()
        Me.TxtName = 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.SuspendLayout()
        '
        'TxtPassword
        '
        Me.TxtPassword.Location = New System.Drawing.Point(128, 80)
        Me.TxtPassword.MaxLength = 10
        Me.TxtPassword.Name = "TxtPassword"
        Me.TxtPassword.Size = New System.Drawing.Size(120, 21)
        Me.TxtPassword.TabIndex = 11
        Me.TxtPassword.Text = ""
        '
        'TxtName
        '
        Me.TxtName.Location = New System.Drawing.Point(128, 32)
        Me.TxtName.MaxLength = 10
        Me.TxtName.Name = "TxtName"
        Me.TxtName.Size = New System.Drawing.Size(120, 21)
        Me.TxtName.TabIndex = 10
        Me.TxtName.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(48, 80)
        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(40, 32)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(56, 24)
        Me.Label1.TabIndex = 8
        Me.Label1.Text = "用户名："
        '
        'BtCancel
        '
        Me.BtCancel.Location = New System.Drawing.Point(168, 136)
        Me.BtCancel.Name = "BtCancel"
        Me.BtCancel.Size = New System.Drawing.Size(80, 32)
        Me.BtCancel.TabIndex = 7
        Me.BtCancel.Text = "取消"
        '
        'BtOK
        '
        Me.BtOK.Location = New System.Drawing.Point(48, 136)
        Me.BtOK.Name = "BtOK"
        Me.BtOK.Size = New System.Drawing.Size(72, 32)
        Me.BtOK.TabIndex = 6
        Me.BtOK.Text = "确定"
        '
        'FrmAddManager
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(296, 198)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.TxtPassword, Me.TxtName, Me.Label2, Me.Label1, Me.BtCancel, Me.BtOK})
        Me.MaximizeBox = False
        Me.Name = "FrmAddManager"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent
        Me.Text = "添加管理员"
        Me.ResumeLayout(False)

    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

    Private Sub BtOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtOK.Click
        If Trim(TxtName.Text) = "" Then
            MsgBox("输入的用户名不能为空！", MsgBoxStyle.Exclamation, Me.Text)
            Exit Sub
        End If
        If MagagerExit(Trim(TxtName.Text)) = True Then
            MsgBox("该用户名已经存在！", MsgBoxStyle.Exclamation, Me.Text)
            Exit Sub
        End If
        If Trim(TxtPassword.Text) = "" Then
            MsgBox("输入的密码不能为空！", MsgBoxStyle.Exclamation, Me.Text)
            Exit Sub
        End If
        Dim oleconn As New OleDb.OleDbConnection(CONN)
        Dim SQLString As String
        SQLString = "INSERT INTO tbManager(Name,Pwd) VALUES('" & TxtName.Text & "','" & TxtPassword.Text & "')"
        CommandRecord(SQLString)  ' 调用函数执行SQL语句
        AddLog("添加管理员" & TxtName.Text) '写日志
        MsgBox("恭喜你，添加用户成功！", , Me.Text)
    End Sub
    Function MagagerExit(ByVal ManagerName As String) As Boolean
        Dim SQLString As String
        SQLString = "SELECT * FROM tbManager WHERE Name='" & Trim(ManagerName) & "' "
        'SQL查询语句
        Dim ObjectdsDataSet As New DataSet() '定义数据集
        Dim oleconn As New OleDb.OleDbConnection(CONN) '定义数据库连接
        Dim adapter As New OleDb.OleDbDataAdapter() '定义数据库适配器
        adapter.TableMappings.Add("Table", "User")
        Dim cmd As OleDb.OleDbCommand = New OleDb.OleDbCommand(SQLString, oleconn)
        cmd.CommandType = CommandType.Text
        adapter.SelectCommand = cmd
        If oleconn.State <> ConnectionState.Open Then
            oleconn.Open() '打开数据库连接
        End If
        cmd.ExecuteNonQuery()
        If oleconn.State <> ConnectionState.Closed Then
            oleconn.Close()  '关闭数据库连接
        End If
        adapter.Fill(ObjectdsDataSet)
        If ObjectdsDataSet.Tables("User").Rows.Count <> 0 Then
            Return True
        Else
            Return False
        End If
    End Function

End Class