frmfindreaderinfo.frm

这是用VB做的 你们可以那去事实

VERSION 5.00
Begin VB.Form frmfindreaderinfo 
   Caption         =   "查询读者信息"
   ClientHeight    =   6000
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   9135
   LinkTopic       =   "Form1"
   ScaleHeight     =   6000
   ScaleWidth      =   9135
   StartUpPosition =   2  '屏幕中心
   Begin VB.PictureBox DataGrid1 
      Height          =   3855
      Left            =   240
      ScaleHeight     =   3795
      ScaleWidth      =   8715
      TabIndex        =   8
      Top             =   1800
      Width           =   8775
   End
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      Height          =   495
      Left            =   4800
      TabIndex        =   7
      Top             =   960
      Width           =   1455
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      Height          =   495
      Left            =   2520
      TabIndex        =   6
      Top             =   960
      Width           =   1455
   End
   Begin VB.ComboBox Combo1 
      Height          =   300
      Left            =   7440
      TabIndex        =   5
      Text            =   "Combo1"
      Top             =   360
      Width           =   1455
   End
   Begin VB.TextBox Text2 
      Height          =   375
      Left            =   4440
      TabIndex        =   4
      Top             =   360
      Width           =   1695
   End
   Begin VB.TextBox Text1 
      Height          =   375
      Left            =   1440
      TabIndex        =   3
      Top             =   360
      Width           =   1695
   End
   Begin VB.CheckBox Check3 
      Caption         =   "读者种类"
      Height          =   495
      Left            =   6240
      TabIndex        =   2
      Top             =   240
      Width           =   1095
   End
   Begin VB.CheckBox Check2 
      Caption         =   "读者姓名"
      Height          =   495
      Left            =   3240
      TabIndex        =   1
      Top             =   240
      Width           =   1095
   End
   Begin VB.CheckBox Check1 
      Caption         =   "读者编号"
      Height          =   495
      Left            =   240
      TabIndex        =   0
      Top             =   240
      Width           =   1095
   End
End
Attribute VB_Name = "frmfindreaderinfo"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False


Private Sub Command1_Click()
Dim rs_findreader As New ADODB.Recordset
Dim conn As New ADODB.Connection
Dim sql As String
If Check1.Value = vbChecked Then
   sql = "读者编号='" & Trim(Text1.Text & "") & "'"
End If
If Check2.Value = vbChecked Then
  If Trim(sql) = "" Then
    sql = "读者姓名='" & Trim(Text2.Text & " ") & "'"
  Else
    sql = sql & "and 类别='" & Trim(Text2.Text & " ") & "'"
  End If
End If
If Check3.Value = vbChecked Then
  If Trim(sql) = "" Then
    sql = "读者类别='" & Trim(Combo1.Text & " ") & "'"
  Else
    sql = sql & "and 读者类别='" & Trim(Combo1.Text & " ") & "'"
  End If
End If


conn.Open "provider=Microsoft.Jet.OLEDB.4.0; data source=" & App.Path & "\database.mdb"
If Trim(sql) = "" Then
  MsgBox "请选择查询方式!", vbOKOnly + vbExclamation
  Exit Sub
End If
sql = "select * from 读者信息 where " & sql
rs_findreader.CursorLocation = adUseClient
rs_findreader.Open sql, conn, adOpenKeyset, adLockPessimistic
DataGrid1.AllowAddNew = False
DataGrid1.AllowDelete = False
DataGrid1.AllowUpdate = False
If rs_findreader.RecordCount = 0 Then
  MsgBox "查询不到该图书信息!", vbOKOnly + vbExclamation
Else
  Set DataGrid1.DataSource = rs_findreader
End If
End Sub

Private Sub Command2_Click()
Unload Me
End Sub

Private Sub Form_Load()
 Dim rs_find As New ADODB.Recordset
 Dim conn As New ADODB.Connection
 Dim sql As String
 sql = "select * from 读者类别"
 conn.Open "provider=Microsoft.Jet.OLEDB.4.0; data source=" & App.Path & "\database.mdb"
 rs_find.Open sql, conn, adOpenKeyset, adLockPessimistic
 rs_find.MoveFirst
 If Not rs_find.EOF Then
    Do While Not rs_find.EOF
       Combo1.AddItem rs_find.Fields(0)
       rs_find.MoveNext
    Loop
    Combo1.ListIndex = 0
 End If
 rs_find.Close
 End Sub