教育系统应用

开发平台：
Visual Basic

Formclass3.frm：源码内容
							VERSION 5.00
Begin VB.Form Formclass3 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "班级查询"
   ClientHeight    =   2895
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   3990
   Icon            =   "Formclass3.frx":0000
   LinkTopic       =   "Form2"
   MaxButton       =   0   'False
   MDIChild        =   -1  'True
   MinButton       =   0   'False
   ScaleHeight     =   2895
   ScaleWidth      =   3990
   Begin VB.TextBox Text1 
      BackColor       =   &H80000018&
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   270
      Index           =   0
      Left            =   1560
      TabIndex        =   3
      Top             =   960
      Width           =   975
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      Height          =   255
      Left            =   1440
      TabIndex        =   2
      Top             =   2520
      Width           =   1095
   End
   Begin VB.TextBox Text1 
      BackColor       =   &H80000018&
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Index           =   1
      Left            =   1560
      TabIndex        =   1
      Top             =   1440
      Width           =   1215
   End
   Begin VB.TextBox Text1 
      BackColor       =   &H80000018&
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Index           =   2
      Left            =   1560
      TabIndex        =   0
      Top             =   1920
      Width           =   1695
   End
   Begin VB.Label Label4 
      Caption         =   "专业："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00C00000&
      Height          =   255
      Left            =   840
      TabIndex        =   7
      Top             =   1920
      Width           =   1575
   End
   Begin VB.Label Label2 
      Caption         =   "班级："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00C00000&
      Height          =   255
      Left            =   840
      TabIndex        =   6
      Top             =   1440
      Width           =   1455
   End
   Begin VB.Label Label1 
      Caption         =   "年级："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00C00000&
      Height          =   255
      Left            =   840
      TabIndex        =   5
      Top             =   960
      Width           =   975
   End
   Begin VB.Label Label3 
      Caption         =   "班级设置查询"
      BeginProperty Font 
         Name            =   "华文中宋"
         Size            =   15.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   840
      TabIndex        =   4
      Top             =   120
      Width           =   2175
   End
End
Attribute VB_Name = "Formclass3"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
txtsql = ""
If Text1(0).Text <> "" Then
  
  If txtsql = "" Then
    txtsql = "年级='" & Trim(Text1(0).Text) & "'"
  Else
    txtsql = txtsql & "and 年级='" & Trim(Text1(0).Text) & "'"
  End If
End If
If Text1(1).Text <> "" Then
  If txtsql = "" Then
    txtsql = "班级='" & Trim(Text1(1).Text) & "'"
  Else
    txtsql = txtsql & "and 班级='" & Trim(Text1(1).Text) & "'"
  End If
End If
If Text1(2).Text <> "" Then
  aa = 1
  If txtsql = "" Then
    txtsql = "专业='" & Trim(Text1(2).Text) & "'"
  Else
    txtsql = txtsql & "and 专业='" & Trim(Text1(2).Text) & "'"
  End If
End If
If txtsql = "" Then
  ss = MsgBox("你至少要输入一个条件以上才能查询！", , " 警告")
  Text1(0).SetFocus
  Exit Sub
  
End If
txtsql = "select * from class where " & txtsql
Dim mrc As ADODB.Recordset
Set mrc = ExecuteSQL(txtsql)
If mrc.EOF = True Then
 zzz = MsgBox("对不起，没有此班级的档案记录！", vbOKOnly, "查询")
   Formclass3.ZOrder (0)
   Formclass3.Text1(0).SetFocus
   Exit Sub
End If
Formclass2.printstr = txtsql
classfind = True
Formclass2.Show
Formclass2.classshowtitle
Formclass2.classshowdata
Formclass2.Caption = "班级设置查询结果"
Formclass2.ZOrder (0)
End Sub
Private Sub Form_Unload(Cancel As Integer)
classfind = False
End Sub

						