addstu.frm

评语管理系统 vb+access数据库编程

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "添加学生"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command2 
      Caption         =   "取消"
      Height          =   375
      Left            =   2520
      TabIndex        =   7
      Top             =   2400
      Width           =   975
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      Height          =   375
      Left            =   840
      TabIndex        =   6
      Top             =   2400
      Width           =   975
   End
   Begin VB.TextBox Text3 
      Height          =   375
      Left            =   1560
      TabIndex        =   5
      Top             =   1680
      Width           =   1455
   End
   Begin VB.TextBox Text2 
      Height          =   375
      Left            =   1560
      TabIndex        =   4
      Top             =   1080
      Width           =   1455
   End
   Begin VB.TextBox Text1 
      Height          =   375
      Left            =   1560
      TabIndex        =   3
      Top             =   480
      Width           =   1455
   End
   Begin VB.Label Label3 
      AutoSize        =   -1  'True
      Caption         =   "班级"
      Height          =   180
      Left            =   840
      TabIndex        =   2
      Top             =   1680
      Width           =   360
   End
   Begin VB.Label Label2 
      AutoSize        =   -1  'True
      Caption         =   "学生学号"
      Height          =   180
      Left            =   480
      TabIndex        =   1
      Top             =   1080
      Width           =   720
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "学生姓名"
      Height          =   180
      Left            =   480
      TabIndex        =   0
      Top             =   480
      Width           =   720
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim rs As New ADODB.Recordset
Private Sub Command1_Click()
Dim sql As String
If Trim(Text1.Text) = "" Then
   MsgBox "学生姓名不能为空", vbOKOnly + vbExclamation, ""
   Text1.SetFocus
   Exit Sub
End If
If Trim(Text2.Text) = "" Then
   MsgBox "学号不能为空", vbOKOnly + vbExclamation, ""
   Text2.SetFocus
   Exit Sub
End If
If Trim(Text3.Text) = "" Then
   MsgBox "班级不能为空", vbOKOnly + vbExclamation, ""
   Text3.SetFocus
   Exit Sub
End If
   sql = "select * from 学生管理"
   rs.CursorLocation = adUseClient
   rs.Open sql, conn, adOpenKeyset, adLockPessimistic
   While (rs.EOF = False)
        If Trim(rs.Fields(0)) = Trim(Text2.Text) Then
           MsgBox "学号不能重复！", vbOKOnly + vbExclamation, ""
           Text1.SetFocus
           Text1.Text = ""
           Text2.Text = ""
           Text3.Text = ""
           Exit Sub
         Else
           rs.MoveNext
         End If
    Wend
       rs.AddNew
       rs.Fields(0) = Text2.Text
       rs.Fields(1) = Text1.Text
       rs.Fields(2) = Text3.Text
       rs.Update
       rs.Close
       MsgBox "添加用户成功", vbOKOnly + vbExclamation, ""
       Unload Me
End Sub

Private Sub Command2_Click()
Unload Me
End Sub