frmupdate.frm

数据库课程设计

VERSION 5.00
Begin VB.Form frmUpdate 
   Caption         =   "修改/删除房间"
   ClientHeight    =   3150
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   7500
   LinkTopic       =   "Form1"
   ScaleHeight     =   3150
   ScaleWidth      =   7500
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton cmdDelete 
      Caption         =   "删除(&D)"
      Height          =   375
      Left            =   5320
      TabIndex        =   18
      Top             =   2640
      Width           =   975
   End
   Begin VB.CommandButton cmdMove 
      Caption         =   "末记录(&L)"
      Height          =   375
      Index           =   3
      Left            =   3240
      TabIndex        =   15
      Top             =   2640
      Width           =   855
   End
   Begin VB.CommandButton cmdMove 
      Caption         =   "后移(&N)"
      Height          =   375
      Index           =   2
      Left            =   2200
      TabIndex        =   14
      Top             =   2640
      Width           =   855
   End
   Begin VB.CommandButton cmdMove 
      Caption         =   "前移(&P)"
      Height          =   375
      Index           =   1
      Left            =   1160
      TabIndex        =   13
      Top             =   2640
      Width           =   855
   End
   Begin VB.CommandButton cmdMove 
      Caption         =   "首记录(&F)"
      Height          =   375
      Index           =   0
      Left            =   120
      TabIndex        =   12
      Top             =   2640
      Width           =   855
   End
   Begin VB.Frame Frame1 
      Caption         =   "客房信息"
      Height          =   2295
      Left            =   120
      TabIndex        =   2
      Top             =   240
      Width           =   7215
      Begin VB.ComboBox cboBooked 
         Height          =   315
         Left            =   1200
         TabIndex        =   17
         Text            =   "Combo1"
         Top             =   1800
         Width           =   2175
      End
      Begin VB.TextBox txtPrice 
         Enabled         =   0   'False
         Height          =   270
         Left            =   1200
         MaxLength       =   10
         TabIndex        =   6
         Top             =   1440
         Width           =   1455
      End
      Begin VB.TextBox txtName 
         Height          =   270
         Left            =   1200
         MaxLength       =   5
         TabIndex        =   5
         Top             =   480
         Width           =   2175
      End
      Begin VB.ComboBox cboType 
         Height          =   315
         Left            =   1200
         Style           =   2  'Dropdown List
         TabIndex        =   4
         Top             =   960
         Width           =   2175
      End
      Begin VB.TextBox txtMemo 
         Height          =   1560
         Left            =   4440
         MaxLength       =   5
         MultiLine       =   -1  'True
         ScrollBars      =   2  'Vertical
         TabIndex        =   3
         Top             =   480
         Width           =   2535
      End
      Begin VB.Label Label3 
         Caption         =   "是否入住："
         Height          =   255
         Left            =   240
         TabIndex        =   16
         Top             =   1920
         Width           =   975
      End
      Begin VB.Label Label2 
         Caption         =   "房间价格："
         Height          =   255
         Index           =   3
         Left            =   240
         TabIndex        =   11
         Top             =   1440
         Width           =   975
      End
      Begin VB.Label Label2 
         Caption         =   "房  间  号："
         Height          =   255
         Index           =   0
         Left            =   240
         TabIndex        =   10
         Top             =   480
         Width           =   975
      End
      Begin VB.Label Label2 
         Caption         =   "房间类型："
         Height          =   255
         Index           =   1
         Left            =   240
         TabIndex        =   9
         Top             =   960
         Width           =   975
      End
      Begin VB.Label Label2 
         Caption         =   "元/每天"
         Height          =   255
         Index           =   4
         Left            =   2760
         TabIndex        =   8
         Top             =   1440
         Width           =   615
      End
      Begin VB.Label Label1 
         Caption         =   "备       注："
         Height          =   255
         Left            =   3600
         TabIndex        =   7
         Top             =   480
         Width           =   855
      End
   End
   Begin VB.CommandButton cmdExit 
      Caption         =   "取消 (&X)"
      Height          =   375
      Left            =   6480
      TabIndex        =   1
      Top             =   2640
      Width           =   855
   End
   Begin VB.CommandButton cmdUpdate 
      Caption         =   "修改(&U)"
      Height          =   375
      Left            =   4280
      TabIndex        =   0
      Top             =   2640
      Width           =   855
   End
End
Attribute VB_Name = "frmUpdate"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Public sqlStr As String
Public msgText As String
Public rstRoom As ADODB.Recordset

Private Sub cboType_Click()
    Dim rstType As ADODB.Recordset
 
    sqlStr = "select typename,price from roomtype where typename='" & Trim(cboType) & "'"
    Set rstType = ExecuteSQL(sqlStr, msgText)
    
    If Not rstType.EOF Then
        txtPrice = rstType!price
        
    Else
        MsgBox "请先添加客房类型！", vbOKOnly + vbExclamation, "警告"
        Exit Sub
    End If
    rstType.Close

End Sub

Private Sub cmdDelete_Click()
Dim sel As Integer

sel = MsgBox("确定要删除吗？", vbOKCancel, "确认")
If sel = vbOK Then
   rstRoom.Delete
   cmdMove_Click (2)
    MsgBox "成功删除一条记录", vbInformation, "提示"
End If

End Sub

Private Sub cmdExit_Click()
Unload Me
End Sub

Private Sub cmdMove_Click(Index As Integer)
Select Case Index
    '移动到第一条记录
     Case 0: rstRoom.MoveFirst
             showRec
     '向前移动一条记录
     Case 1:
            rstRoom.MovePrevious
            If rstRoom.BOF Then
               rstRoom.MoveFirst
            End If
            showRec
    '向后移动一条记录
    Case 2:
            rstRoom.MoveNext
            If rstRoom.EOF Then
               rstRoom.MoveLast
            End If
            showRec
            
    '移动到最后一条记录
    Case 3: rstRoom.MoveLast
            showRec
End Select
End Sub

Private Sub cmdUpdate_Click()
    rstRoom.Fields("roomNO") = txtName.Text
    rstRoom.Fields("roomType") = cboType.Text
    rstRoom.Fields("roomPrice") = txtPrice.Text
    rstRoom.Fields("hasBooked") = cboBooked.Text
    rstRoom.Fields("roomMemo") = txtMemo.Text
    rstRoom.Update
    cmdMove_Click (2)
    MsgBox "已成功修改数据！！", vbInformation, "提示"
End Sub

Private Sub Form_Load()
Dim rstType As ADODB.Recordset

'窗体居中显示
Me.Top = (Screen.Height - Me.Height) \ 2
Me.Left = (Screen.Width - Me.Width) \ 2

   
    txtName = ""
    txtPrice = ""
    txtMemo = ""
    cboType.Clear
    
    '初始化房间类型
    sqlStr = "select DISTINCT typename from roomtype"
    Set rstType = ExecuteSQL(sqlStr, msgText)
    
    If Not rstType.EOF Then
        
            Do While Not rstType.EOF
                cboType.AddItem Trim(rstType.Fields(0))
                rstType.MoveNext
            Loop
            cboType.ListIndex = 0
        
    Else
        MsgBox "请添加客房类型！", vbOKOnly + vbExclamation, "警告"
        Exit Sub
    End If
    rstType.Close
    
    '获取房间表的记录集
    sqlStr = "select * from roomInfo"
    Set rstRoom = ExecuteSQL(sqlStr, msgText)
    showRec

End Sub

Public Sub showRec()
    
    If Not rstRoom.EOF Then
        txtName.Text = Trim(rstRoom.Fields("roomNO"))
        txtPrice.Text = Trim(rstRoom.Fields("roomPrice"))
        txtMemo.Text = Trim(rstRoom.Fields("roomMemo"))
        cboType.Text = Trim(rstRoom.Fields("roomType"))
        cboBooked.Text = Trim(rstRoom.Fields("hasBooked"))
    Else
        MsgBox "没有任何房间信息！", vbOKOnly + vbExclamation, "警告"
        Exit Sub
    End If

End Sub