frmaddtime.vb

采用VB编写的机房管理系统

Public Class FrmAddTime
    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 TxtIDOrder As System.Windows.Forms.TextBox
    Friend WithEvents TxtTime 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.TxtIDOrder = New System.Windows.Forms.TextBox
        Me.TxtTime = 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(56, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(64, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "编号"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(56, 80)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(56, 24)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "机时"
        '
        'TxtIDOrder
        '
        Me.TxtIDOrder.Location = New System.Drawing.Point(176, 24)
        Me.TxtIDOrder.MaxLength = 6
        Me.TxtIDOrder.Name = "TxtIDOrder"
        Me.TxtIDOrder.Size = New System.Drawing.Size(144, 21)
        Me.TxtIDOrder.TabIndex = 2
        Me.TxtIDOrder.Text = ""
        '
        'TxtTime
        '
        Me.TxtTime.Location = New System.Drawing.Point(176, 72)
        Me.TxtTime.MaxLength = 3
        Me.TxtTime.Name = "TxtTime"
        Me.TxtTime.Size = New System.Drawing.Size(144, 21)
        Me.TxtTime.TabIndex = 3
        Me.TxtTime.Text = ""
        '
        'BtOK
        '
        Me.BtOK.Location = New System.Drawing.Point(80, 152)
        Me.BtOK.Name = "BtOK"
        Me.BtOK.Size = New System.Drawing.Size(88, 32)
        Me.BtOK.TabIndex = 4
        Me.BtOK.Text = "确定"
        '
        'BtCancel
        '
        Me.BtCancel.Location = New System.Drawing.Point(216, 152)
        Me.BtCancel.Name = "BtCancel"
        Me.BtCancel.Size = New System.Drawing.Size(104, 32)
        Me.BtCancel.TabIndex = 5
        Me.BtCancel.Text = "取消"
        '
        'FrmAddTime
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(400, 246)
        Me.Controls.Add(Me.BtCancel)
        Me.Controls.Add(Me.BtOK)
        Me.Controls.Add(Me.TxtTime)
        Me.Controls.Add(Me.TxtIDOrder)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.MaximizeBox = False
        Me.Name = "FrmAddTime"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "用户续机时"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Function RemainTime() As Double
        Dim sqlstring As String
        sqlstring = "select RemainTime from tbUser where IDOrder='" & Trim(TxtIDOrder.Text) & "'"
        Dim objectdsdatatset As New 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)
        cmd.CommandType = CommandType.Text
        adapter.SelectCommand = cmd
        If oleconn.State <> ConnectionState.Open Then
            oleconn.Open()

        End If
        cmd.ExecuteNonQuery()
        If oleconn.State <> ConnectionState.Closed Then
            oleconn.Close()

        End If
        adapter.Fill(objectdsdatatset)
        Return objectdsdatatset.Tables("User").Rows(0)("RemainTime")

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

    Private Sub FrmAddTime_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(TxtIDOrder.Text) = "" Then
            MsgBox("", MsgBoxStyle.Exclamation, Me.Text)
            Exit Sub

        End If
        If Not IsNumeric(TxtTime.Text) Then
            MsgBox("", MsgBoxStyle.Exclamation, Me.Text)
            Exit Sub
        End If
        Dim currentTime As Double
        currentTime = RemainTime() + Val(TxtTime.Text)
        Dim oleconn As New OleDb.OleDbConnection(CONN)
        Dim cmd As New OleDb.OleDbCommand
        Dim sqlstring As String
        sqlstring = "update tbUser set RemainTime='" & currentTime & "' where IDOrder='" & Trim(TxtIDOrder.Text) & "'"
        CommandRecord(sqlstring)
        AddLog(ManagerName & "为" & TxtIDOrder.Text & "添加了机时" & TxtTime.Text)
        MsgBox("续机时成功" & ControlChars.CrLf & "当前可用机时为" & CStr(currentTime), , Me.Text)

        Me.Close()



    End Sub
End Class