frmbookreturn.frm

这是我和同学编嘚图书馆管理信息系统

VERSION 5.00
Begin VB.Form frmBookReturn 
   Caption         =   "还书"
   ClientHeight    =   2445
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4710
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   ScaleHeight     =   2445
   ScaleWidth      =   4710
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton cmdClose 
      Caption         =   "退出"
      Height          =   375
      Left            =   3000
      TabIndex        =   5
      Top             =   1800
      Width           =   1335
   End
   Begin VB.CommandButton cmdReturn 
      Caption         =   "还书"
      Height          =   375
      Left            =   360
      TabIndex        =   4
      Top             =   1800
      Width           =   1335
   End
   Begin VB.TextBox txtBookNo 
      Height          =   375
      Left            =   2160
      TabIndex        =   3
      Top             =   960
      Width           =   2175
   End
   Begin VB.TextBox txtReadNo 
      Height          =   375
      Left            =   2160
      TabIndex        =   1
      Top             =   360
      Width           =   2175
   End
   Begin VB.Label Label2 
      Caption         =   "书号"
      Height          =   375
      Left            =   360
      TabIndex        =   2
      Top             =   960
      Width           =   1455
   End
   Begin VB.Label Label1 
      Caption         =   "学号"
      Height          =   375
      Left            =   360
      TabIndex        =   0
      Top             =   360
      Width           =   1455
   End
End
Attribute VB_Name = "frmBookReturn"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False





Private Sub cmdReturn_Click()
Dim sql As String
Set rsRecordSet = New ADODB.Recordset
strsql = "select * from borrowinfo where readerId='" & txtReadNo.Text & "' and bookId='" & txtBookNo.Text & "'"
rsRecordSet.Open strsql, connConnection, adOpenKeyset, adLockPessimistic
If rsRecordSet.Fields(0) <> "" Then
   rsRecordSet.Delete
   rsRecordSet.Update
   MsgBox "还书成功", vbOKOnly + vbExclamation
 Else
 MsgBox "不存在此借书记录", , ""
 Error ""
End If

End Sub

Private Sub cmdClose_Click()
    Unload Me
End Sub

Private Sub txtBookNo_LostFocus()
        If txtBookNo.Text = "" Then
                MsgBox "请输入图书号，且为整数", , "Error"
        End If
End Sub

Private Sub txtReadNo_LostFocus()
        If txtReadNo.Text = "" Then
                MsgBox "请输入学号，且为整数", , "Error"
                
        End If
End Sub