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SQL+VB图书管理系统(数据库+源代码+论文) 第6页

更新时间：2009-6-3: 来源：毕业论文

SQL+VB图书信息管理系统论文
     If Trim(Frm_data2.MSFlexGrid2.TextMatrix(Frm_data2.MSFlexGrid2.Row, 0)) = "借出" Then
              MsgBox "此书籍库存量为0不可借！", vbOKOnly + vbInformation, "信息"
              Exit Sub
            End If

            Frm_data2.MSFlexGrid2.Clear
            Frm_data2.MSFlexGrid2.Cols = 2
            Frm_data2.MSFlexGrid2.Rows = 2

            strSql2 = "select * from 图书罚款 where 图书ID='" + Trim(Frm_jhx.Txt_tsid.Text) + "'"
            ShowData strSql2, Frm_data2.MSFlexGrid2

            If Trim(Frm_data2.MSFlexGrid2.TextMatrix(Frm_data2.MSFlexGrid2.Row, 6)) = "否" Then
              MsgBox "此书籍逾期欠款，请先交款！", vbOKOnly + vbInformation, "信息"
              Frm_yqjk.Show 1
              Exit Sub
            End If

            Frm_data2.MSFlexGrid2.Clear
            Frm_data2.MSFlexGrid2.Cols = 2
            Frm_data2.MSFlexGrid2.Rows = 2

            strSql3 = "select * from 图书丢失 where 图书ID='" + Trim(Frm_jhx.Txt_tsid.Text) + "'"
            ShowData strSql3, Frm_data2.MSFlexGrid2

            If Trim(Frm_data2.MSFlexGrid2.TextMatrix(Frm_data2.MSFlexGrid2.Row, 7)) = "否" Then
              MsgBox "此书籍丢失未赔偿，请先赔偿！", vbOKOnly + vbInformation, "信息"
              Frm_dspc.Show 1
              Exit Sub
            End If

            Frm_data2.MSFlexGrid2.Clear
            Frm_data2.MSFlexGrid2.Cols = 2
            Frm_data2.MSFlexGrid2.Rows = 2

            strSql4 = "select * from 读者信息 where 借书证号='" + Trim(Frm_jhx.Txt_jszh.Text) + "'"
            ShowData strSql4, Frm_data2.MSFlexGrid2

            If Trim(Frm_data2.MSFlexGrid2.TextMatrix(Frm_data2.MSFlexGrid2.Row, 7)) = "普通读者" And Frm_jhx.MSFlexGrid1.Rows = 4 Then
              MsgBox "该读者借书数量已达到上限！", vbOKOnly + vbInformation, "信息"
              Exit Sub
            ElseIf Trim(Frm_data2.MSFlexGrid2.TextMatrix(Frm_data2.MSFlexGrid2.Row, 7)) = "高级读者" And Frm_jhx.MSFlexGrid1.Rows = 6 Then
              MsgBox "该读者借书数量已达到上限！", vbOKOnly + vbInformation, "信息"
              Exit Sub
            End If

            Frm_tsjyxz.Caption = "图书续借新增"
            Frm_tsjyxz.Toolbar1.Buttons(3).Caption = "确认续借"
            Frm_tsjyxz.Show 1

          End If
      End If
   End If
End Sub
Public Sub MoveFirst(ctr As Control)
With ctr
    .Row = 1
    .Col = 0
    .RowSel = .Row
    .ColSel = .Cols - 1
End With
End Sub

Public Sub MovePre(ctr As Control)
With ctr
    If .Row > 1 Then
    .Row = .Row - 1
    .Col = 0
    .RowSel = .Row

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