Public Class frmReturn    Inherits 圖書管理系統.frmBase#Region " Windows 窗體設計器生成的代碼 "    Public Sub New()        MyBase.New()        '該調用是 Windows 窗體設計器所必需的。        InitializeComponent()        '在 InitializeComponent() 調用之后添加任何初始化    End Sub    '窗體重寫 dispose 以清理組件列表。    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 窗體設計器所必需的    Private components As System.ComponentModel.IContainer    '注意: 以下過程是 Windows 窗體設計器所必需的    '可以使用 Windows 窗體設計器修改此過程。    '不要使用代碼編輯器修改它。    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents btnSubmit As System.Windows.Forms.Button
    Friend WithEvents Label4 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.Label4 = New System.Windows.Forms.Label
        Me.btnSubmit = New System.Windows.Forms.Button
        Me.GroupBox1.SuspendLayout()
        Me.SuspendLayout()
        '
        'GroupBox1
        '
        Me.GroupBox1.Anchor = CType(((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.GroupBox1.Controls.Add(Me.Label4)
        Me.GroupBox1.Controls.Add(Me.btnSubmit)
        Me.GroupBox1.Location = New System.Drawing.Point(0, 152)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(608, 160)
        Me.GroupBox1.TabIndex = 4
        Me.GroupBox1.TabStop = False
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(232, 39)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(264, 104)
        Me.Label4.TabIndex = 1
        Me.Label4.Text = "說明：這里是 圖書借閱、圖書信息、讀者信息、三張表關聯查詢的結果，只顯示狀態為""未還""的記錄，選擇相應的記錄，單擊【歸還】按鈕，先判斷選擇的記錄是否已過期，如果過" & _
        "期提示輸入罰款金額，然后調用""sf_圖書歸還""存儲過程，參數是選擇記錄的借閱編號和超期罰款金額"
        '
        'btnSubmit
        '
        Me.btnSubmit.Location = New System.Drawing.Point(104, 74)
        Me.btnSubmit.Name = "btnSubmit"
        Me.btnSubmit.Size = New System.Drawing.Size(104, 24)
        Me.btnSubmit.TabIndex = 0
        Me.btnSubmit.Text = "歸還選擇的圖書"
        '
        'frmReturn
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(608, 317)
        Me.Controls.Add(Me.GroupBox1)
        Me.Name = "frmReturn"
        Me.Controls.SetChildIndex(Me.GroupBox1, 0)
        Me.GroupBox1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub#End Region    Public Overrides Sub Prepare()
        Me.Text = "圖書歸還"
        Me.Label1.Text = "讀者編號"
        Me.Label2.Text = "讀者條碼"
        Me.Label3.Text = "圖書編號"
        Me.ToolBar1.Visible = False
    End Sub    Public Overrides Sub LoadData()
        Dim strFilter As String
        If txbOne.Text.Trim.Length = 0 Then
            If txbTwo.Text.Trim.Length = 0 Then
                If txbThree.Text.Trim.Length = 0 Then
                    strFilter = ""
                Else
                    strFilter = "and 圖書編號 like '"
                    strFilter += txbThree.Text.Trim + "%'"
                End If
            Else
                strFilter = "where 讀者條碼 like '"
                strFilter += txbTwo.Text.Trim + "%'"
                If txbThree.Text.Trim.Length <> 0 Then
                    strFilter += " and 圖書編號 like '"
                    strFilter += txbThree.Text.Trim + "%'"
                End If
            End If
        Else
            strFilter = "and 讀者編號 like '"
            strFilter += txbOne.Text.Trim + "%'"
            If txbTwo.Text.Trim.Length <> 0 Then
                strFilter += " and 讀者條碼 like '"
                strFilter += txbTwo.Text.Trim + "%'"
                If txbThree.Text.Trim.Length <> 0 Then
                    strFilter += " and 圖書編號 like '"
                    strFilter += txbThree.Text.Trim + "%'"
                End If
            Else
                If txbThree.Text.Trim.Length <> 0 Then
                    strFilter += " and 圖書編號 like '"
                    strFilter += txbThree.Text.Trim + "%'"
                End If
            End If
        End If
        Dim db As DataBase = New DataBase
        Dim strSQL As String
        strSQL = "select 借閱編號,c.圖書編號,書名 as 圖書名稱 ,"
        strSQL += "借閱時間,應還時間,姓名,c.讀者編號,續借次數,"
        strSQL += "c.操作員,狀態 from 圖書信息 as a, 讀者信息 as b,"
        strSQL += "圖書借閱 as c where a.編號 = c.圖書編號"
        strSQL += " and b.編號 = c.讀者編號 "
        strSQL += strFilter + " and 狀態='未還'"
        Dim dv As DataView = db.RunSelectSQL(strSQL)
        dtData = dv.Table
    End Sub
    Public Overrides Sub SetDataGrid()
        LoadData()
        '定義一個DataGrid表樣式
        Dim ts As New DataGridTableStyle
        Dim aColumnTextColumn As DataGridTextBoxColumn
        Dim numCols As Integer = dtData.Columns.Count
        Dim i As Integer
        For i = 0 To numCols - 1
            aColumnTextColumn = New DataGridTextBoxColumn
            aColumnTextColumn.MappingName = _
            dtData.Columns(i).ColumnName
            aColumnTextColumn.HeaderText = _
            dtData.Columns(i).ColumnName
            aColumnTextColumn.NullText = ""
            aColumnTextColumn.ReadOnly = True
            ts.GridColumnStyles.Add(aColumnTextColumn)
        Next
        ts.AlternatingBackColor = Color.LightGray
        ts.AllowSorting = False
        ts.MappingName = dtData.TableName
        dgdList.TableStyles.Clear()
        dgdList.TableStyles.Add(ts)
        Dim dv As DataView = dtData.DefaultView
        dv.AllowNew = False
        dv.AllowDelete = False
        dv.AllowEdit = False
        '設置數據源
        dgdList.DataSource = dtData.DefaultView
        lblCount.Text = "記錄數:" + dtData.Rows.Count.ToString()
    End Sub    Private Sub btnSubmit_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles btnSubmit.Click
        Dim iRow As Integer = Me.dgdList.CurrentCell.RowNumber
        Dim number As Integer = _
        CInt(dtData.Rows(iRow)("借閱編號").ToString.Trim)
        'Dim money As Double = 

        Dim message, title, defaultValue As String
        Dim money As String = "0"
        message = "歸還的圖書已過期,請輸入罰款金額,取消"
        title = "提示"   ' Set title.
        defaultValue = "0"
        '獲取當前行的數據的日期
        Dim tmDate As Date = _
        CType((dtData.Rows(iRow)("應還時間").ToString.Trim), Date)
        '判斷是否過期
        If Date.Now > tmDate Then
            '過期,則彈出對話框
            money = InputBox(message, title, defaultValue)
        End If
        If money = "" Then
            money = "0"
        End If
        Dim db As DataBase = New DataBase
        db.RunDelOrInsSQL("exec sf_圖書歸還 " _
        + number.ToString + ", " + money.Trim)
        LoadData()
        dtData.DefaultView.AllowDelete = False
        dtData.DefaultView.AllowNew = False
        dtData.DefaultView.AllowEdit = False
        dgdList.DataSource = dtData.DefaultView
    End Sub
End Class