frmaddmanager.vb

采用VB编写的机房管理系统

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 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 TxtName As System.Windows.Forms.TextBox
    Friend WithEvents TxtPassword As System.Windows.Forms.TextBox
    Friend WithEvents BtOK As System.Windows.Forms.Button
    Friend WithEvents BtCancel As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.TxtName = New System.Windows.Forms.TextBox
        Me.TxtPassword = New System.Windows.Forms.TextBox
        Me.BtOK = New System.Windows.Forms.Button
        Me.BtCancel = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(48, 32)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(64, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "用户名: "
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(48, 88)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(64, 24)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "密码: "
        '
        'TxtName
        '
        Me.TxtName.Location = New System.Drawing.Point(160, 32)
        Me.TxtName.MaxLength = 10
        Me.TxtName.Name = "TxtName"
        Me.TxtName.Size = New System.Drawing.Size(128, 21)
        Me.TxtName.TabIndex = 2
        Me.TxtName.Text = ""
        '
        'TxtPassword
        '
        Me.TxtPassword.Location = New System.Drawing.Point(160, 80)
        Me.TxtPassword.MaxLength = 10
        Me.TxtPassword.Name = "TxtPassword"
        Me.TxtPassword.Size = New System.Drawing.Size(128, 21)
        Me.TxtPassword.TabIndex = 3
        Me.TxtPassword.Text = ""
        '
        'BtOK
        '
        Me.BtOK.Location = New System.Drawing.Point(80, 160)
        Me.BtOK.Name = "BtOK"
        Me.BtOK.Size = New System.Drawing.Size(72, 32)
        Me.BtOK.TabIndex = 4
        Me.BtOK.Text = "确定"
        '
        'BtCancel
        '
        Me.BtCancel.Location = New System.Drawing.Point(216, 160)
        Me.BtCancel.Name = "BtCancel"
        Me.BtCancel.Size = New System.Drawing.Size(80, 32)
        Me.BtCancel.TabIndex = 5
        Me.BtCancel.Text = "取消"
        '
        'FrmAddManager
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(392, 266)
        Me.Controls.Add(Me.BtCancel)
        Me.Controls.Add(Me.BtOK)
        Me.Controls.Add(Me.TxtPassword)
        Me.Controls.Add(Me.TxtName)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.MaximizeBox = False
        Me.Name = "FrmAddManager"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "添加管理员"
        Me.ResumeLayout(False)

    End Sub

#End Region


    Function MagagerExit(ByVal ManagerName As String) As Boolean

        Dim SQLString As String
        SQLString = "SELECT * FROM tbManager where Name ='" & Trim(ManagerName) & "'"
        'Dim ObjectdsDataSet As DataSet
        Dim oleconn As New OleDb.OleDbConnection(CONN)
        'Dim adapter As New OleDb.OleDbDataAdapter
        ' adapter.TableMappings.Add("Table", "User")
        Dim cmd As OleDb.OleDbCommand = New OleDb.OleDbCommand(SQLString, oleconn)
        ' Dim myreader As OleDb.OleDbDataReader
        ' cmd.CommandType = CommandType.Text
        'adapter.SelectCommand = cmd
        If oleconn.State <> ConnectionState.Open Then
            oleconn.Open()
        End If
        'cmd.ExecuteNonQuery()
        Dim flag As Integer
        flag = cmd.ExecuteScalar
        ' myreader = cmd.ExecuteReader
        If oleconn.State <> ConnectionState.Closed Then
            oleconn.Close()
        End If

        'adapter.Fill(ObjectdsDataSet)

        'If ObjectdsDataSet.Tables("User").Rows.Count <> 0 Then
        'If myreader.FieldCount Then
        If flag <> 0 Then

            Return True
        Else
            Return False

        End If

    End Function

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

    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)
        AddLog("添加管理员")
        MsgBox("添加用户成功", , Me.Text)


    End Sub

    Private Sub BtCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtCancel.Click

        Me.Finalize()
        Me.Close()

    End Sub
End Class