form1.frm

主要是网络和数据库的一些东东

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "数据库查询"
   ClientHeight    =   2715
   ClientLeft      =   1620
   ClientTop       =   1545
   ClientWidth     =   3855
   LinkTopic       =   "Form1"
   ScaleHeight     =   2715
   ScaleWidth      =   3855
   Begin VB.ComboBox cboName 
      Height          =   315
      ItemData        =   "Form1.frx":0000
      Left            =   720
      List            =   "Form1.frx":0010
      Style           =   2  'Dropdown List
      TabIndex        =   12
      Top             =   600
      Width           =   1215
   End
   Begin VB.CommandButton cmdCount 
      Caption         =   "查询"
      Height          =   495
      Left            =   600
      TabIndex        =   10
      Top             =   1680
      Width           =   1215
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "合计"
      Height          =   255
      Index           =   7
      Left            =   2040
      TabIndex        =   14
      Top             =   2040
      Width           =   495
   End
   Begin VB.Label lblCountTotal 
      BorderStyle     =   1  'Fixed Single
      Height          =   255
      Left            =   2880
      TabIndex        =   13
      Top             =   2040
      Width           =   495
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "姓名"
      Height          =   255
      Index           =   6
      Left            =   120
      TabIndex        =   11
      Top             =   600
      Width           =   495
   End
   Begin VB.Label lblCountO 
      BorderStyle     =   1  'Fixed Single
      Height          =   255
      Left            =   2880
      TabIndex        =   9
      Top             =   1680
      Width           =   495
   End
   Begin VB.Label lblCountF 
      BorderStyle     =   1  'Fixed Single
      Height          =   255
      Left            =   2880
      TabIndex        =   8
      Top             =   1320
      Width           =   495
   End
   Begin VB.Label lblCountC 
      BorderStyle     =   1  'Fixed Single
      Height          =   255
      Left            =   2880
      TabIndex        =   7
      Top             =   960
      Width           =   495
   End
   Begin VB.Label lblCountP 
      BorderStyle     =   1  'Fixed Single
      Height          =   255
      Left            =   2880
      TabIndex        =   6
      Top             =   600
      Width           =   495
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "O"
      Height          =   255
      Index           =   5
      Left            =   2040
      TabIndex        =   5
      Top             =   1680
      Width           =   495
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "F"
      Height          =   255
      Index           =   4
      Left            =   2040
      TabIndex        =   4
      Top             =   1320
      Width           =   495
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "C"
      Height          =   255
      Index           =   3
      Left            =   2040
      TabIndex        =   3
      Top             =   960
      Width           =   495
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "P"
      Height          =   255
      Index           =   2
      Left            =   2040
      TabIndex        =   2
      Top             =   600
      Width           =   495
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "数量"
      Height          =   255
      Index           =   1
      Left            =   2880
      TabIndex        =   1
      Top             =   240
      Width           =   495
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "状态"
      Height          =   255
      Index           =   0
      Left            =   2040
      TabIndex        =   0
      Top             =   240
      Width           =   495
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub MakeData()
Dim dbString As String
Dim db As Database
Dim query As String
Dim i As Integer
Dim names(0 To 3) As String
Dim statuses(0 To 3) As String
Dim new_name As String
Dim new_status As String
Dim new_amount As Currency

    ' 打开数据库
    dbString = App.Path & "\sales.mdb"
    Set db = OpenDatabase(dbString)
    
    ' 获取数据
    statuses(0) = "P"
    statuses(1) = "C"
    statuses(2) = "F"
    statuses(3) = "O"
    names(0) = "Remkus"
    names(1) = "Stephens"
    names(2) = "Johnson"
    names(3) = "Smythe"
    
    Randomize
    For i = 1 To 50
        new_name = names(Int(Rnd * 4))
        new_status = statuses(Int(Rnd * 4))
        new_amount = 50 + Rnd * 1000
        query = "INSERT INTO sales Values(" & _
            "'" & new_name & "', " & _
            "'" & new_status & "', " & _
            new_amount & ")"
        db.Execute query
    Next i
    
    db.Close
End Sub

Private Sub cmdCount_Click()
Dim dbString As String
Dim db As Database
Dim rs As Recordset
Dim lstrSQL As String

    lstrSQL = ""
    lstrSQL = lstrSQL & "Select Count(*) as TotalCount, "
    lstrSQL = lstrSQL & "Count(iif([status] = 'P', 1, null)) as PCount, "
    lstrSQL = lstrSQL & "Count(iif([status] = 'C', 1, null)) as CCount, "
    lstrSQL = lstrSQL & "Count(iif([status] = 'F', 1, null)) as FCount, "
    lstrSQL = lstrSQL & "Count(iif([status] = 'O', 1, null)) as OCount "
    lstrSQL = lstrSQL & "From Sales "
    lstrSQL = lstrSQL & "Where [Employee] = '" & _
        cboName.Text & "'"

    dbString = App.Path & "\sales.mdb"
    Set db = OpenDatabase(dbString)
    
    ' 查询
    Set rs = db.OpenRecordset(lstrSQL, dbOpenSnapshot)

    ' 显示查询结果
    lblCountTotal.Caption = Format$(rs(0))
    lblCountP.Caption = Format$(rs(1))
    lblCountC.Caption = Format$(rs(2))
    lblCountF.Caption = Format$(rs(3))
    lblCountO.Caption = Format$(rs(4))

    rs.Close
    db.Close
    Set rs = Nothing
    Set db = Nothing

End Sub

Private Sub Form_Load()
    cboName.ListIndex = 0
End Sub