eachstuinfor.frm

sql+vb实现招生管理系统

VERSION 5.00
Object = "{67397AA1-7FB1-11D0-B148-00A0C922E820}#6.0#0"; "MSADODC.OCX"
Object = "{CDE57A40-8B86-11D0-B3C6-00A0C90AEA82}#1.0#0"; "MSDATGRD.OCX"
Begin VB.Form FrmEachStuInfor 
   Caption         =   "各省学生信息"
   ClientHeight    =   6900
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   8505
   LinkTopic       =   "Form1"
   ScaleHeight     =   6900
   ScaleWidth      =   8505
   StartUpPosition =   2  '屏幕中心
   Begin MSAdodcLib.Adodc Adodc1 
      Height          =   495
      Left            =   2160
      Top             =   6240
      Width           =   3735
      _ExtentX        =   6588
      _ExtentY        =   873
      ConnectMode     =   0
      CursorLocation  =   3
      IsolationLevel  =   -1
      ConnectionTimeout=   15
      CommandTimeout  =   30
      CursorType      =   3
      LockType        =   3
      CommandType     =   8
      CursorOptions   =   0
      CacheSize       =   50
      MaxRecords      =   0
      BOFAction       =   0
      EOFAction       =   0
      ConnectStringType=   1
      Appearance      =   1
      BackColor       =   -2147483643
      ForeColor       =   -2147483640
      Orientation     =   0
      Enabled         =   -1
      Connect         =   ""
      OLEDBString     =   ""
      OLEDBFile       =   ""
      DataSourceName  =   ""
      OtherAttributes =   ""
      UserName        =   ""
      Password        =   ""
      RecordSource    =   ""
      Caption         =   "Adodc1"
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      _Version        =   393216
   End
   Begin MSDataGridLib.DataGrid DataGrid1 
      Height          =   6015
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   8175
      _ExtentX        =   14420
      _ExtentY        =   10610
      _Version        =   393216
      BackColor       =   65535
      ForeColor       =   65535
      HeadLines       =   1
      RowHeight       =   15
      BeginProperty HeadFont {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ColumnCount     =   2
      BeginProperty Column00 
         DataField       =   ""
         Caption         =   ""
         BeginProperty DataFormat {6D835690-900B-11D0-9484-00A0C91110ED} 
            Type            =   0
            Format          =   ""
            HaveTrueFalseNull=   0
            FirstDayOfWeek  =   0
            FirstWeekOfYear =   0
            LCID            =   2052
            SubFormatType   =   0
         EndProperty
      EndProperty
      BeginProperty Column01 
         DataField       =   ""
         Caption         =   ""
         BeginProperty DataFormat {6D835690-900B-11D0-9484-00A0C91110ED} 
            Type            =   0
            Format          =   ""
            HaveTrueFalseNull=   0
            FirstDayOfWeek  =   0
            FirstWeekOfYear =   0
            LCID            =   2052
            SubFormatType   =   0
         EndProperty
      EndProperty
      SplitCount      =   1
      BeginProperty Split0 
         BeginProperty Column00 
         EndProperty
         BeginProperty Column01 
         EndProperty
      EndProperty
   End
End
Attribute VB_Name = "FrmEachStuInfor"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim rs_Prov As New ADODB.Recordset

Public MyConnection As ADODB.Connection
Public ConString As String
Private Sub Form_Load()
   
   
   DataGrid1.AllowAddNew = False
   DataGrid1.AllowDelete = False
   DataGrid1.AllowUpdate = False
   Dim sqlProv As String
  Set MyConnection = New ADODB.Connection
  ConString = "Provider=MSDASQL.1;Persist Security Info=False;Data Source=Education_Maneger_System"
  MyConnection.Open ConString
   '下面的sql语句查询各Provinces的已录取总人数和剩余名额
   sqlProv = "select A.Provinces,count(A.CandidatesID) as AllAdmission," _
   & " (sum(B.Quantity)-count(A.CandidatesID)) as LeftAdmission from " _
   & " StuAdmission as A,StuAdmissionScheme as B where A.Provinces=B.Provinces " _
   & "group by A.Provinces"
   rs_Prov.CursorLocation = adUseClient
   rs_Prov.Open sqlProv, MyConnection, adOpenStatic, adLockOptimistic, adCmdText
   
   '若没有符合条件的记录则提示用户且退出
   If rs_Prov.EOF = True Then
      MsgBox "对不起，没有符合条件的记录！", vbOKOnly + vbInformation, "注意"
      rs_Prov.Close
      Exit Sub
   End If
   Set DataGrid1.DataSource = rs_Prov
   DataGrid1.Refresh
End Sub

Private Sub Form_Unload(Cancel As Integer)
   Set DataGrid1.DataSource = Adodc1 '使网格的数据源转向空的Adodc控件，否则有可能无法关闭
   DataGrid1.Refresh
   rs_Prov.Close
   Unload Me
   
End Sub