课程修改.frm

学生信息管理系统可以统计学生的成绩系统需要账户和密码也可以修改密码

VERSION 5.00
Begin VB.Form Form6 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "课程信息修改"
   ClientHeight    =   4560
   ClientLeft      =   45
   ClientTop       =   435
   ClientWidth     =   6585
   LinkTopic       =   "Form6"
   MaxButton       =   0   'False
   MDIChild        =   -1  'True
   MinButton       =   0   'False
   ScaleHeight     =   4560
   ScaleWidth      =   6585
   ShowInTaskbar   =   0   'False
   Begin VB.CommandButton Command4 
      Caption         =   "退出"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   525
      Left            =   4320
      TabIndex        =   9
      Top             =   3480
      Width           =   915
   End
   Begin VB.CommandButton Command3 
      Caption         =   "保存"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   525
      Left            =   1800
      TabIndex        =   8
      Top             =   3480
      Width           =   915
   End
   Begin VB.CommandButton Command2 
      Caption         =   "修改"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   525
      Left            =   360
      TabIndex        =   7
      Top             =   3480
      Width           =   915
   End
   Begin VB.CommandButton Command1 
      Caption         =   "确定"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   9
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   400
      Left            =   4080
      TabIndex        =   6
      Top             =   720
      Width           =   915
   End
   Begin VB.TextBox Text3 
      Height          =   400
      Left            =   2160
      TabIndex        =   5
      Top             =   2520
      Width           =   2355
   End
   Begin VB.TextBox Text2 
      Height          =   400
      Left            =   2160
      TabIndex        =   4
      Top             =   1800
      Width           =   2355
   End
   Begin VB.TextBox Text1 
      Height          =   400
      Left            =   600
      TabIndex        =   3
      Top             =   720
      Width           =   2715
   End
   Begin VB.Frame Frame1 
      Caption         =   "请输入要修改的课程名称"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1215
      Left            =   360
      TabIndex        =   0
      Top             =   240
      Width           =   5295
   End
   Begin VB.Label Label2 
      Caption         =   "课程名称:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   720
      TabIndex        =   2
      Top             =   2600
      Width           =   1245
   End
   Begin VB.Label Label1 
      Caption         =   "课程编号:"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   720
      TabIndex        =   1
      Top             =   1920
      Width           =   1245
   End
End
Attribute VB_Name = "Form6"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim Conn As New ADODB.Connection
Dim Rs As New ADODB.Recordset
'在课程编号和课程名的文本框中显示数据库中的数据
Sub Showtext()
Text2.Text = Rs("课程编号")
Text3.Text = Rs("课程名称")
End Sub

Private Sub Command1_Click()
Dim Txtsql As String

 Dim Txtsql2 As String
   Dim Mrc As ADODB.Recordset
  '检查输入学号是否在数据库中有同名记录
   If Trim(Text1.Text) = "" Then
      MsgBox "请输入课程名称！", vbExclamation, "出错啦！"
      Exit Sub
    Else
      Txtsql2 = "select * from 课程表"
      Set Mrc = ExecuteSQL(Txtsql2)
      While (Mrc.EOF = False)
          If Trim(Mrc("课程名称")) = Trim(Text1.Text) Then
                 GoTo laijinlong
             Else
                  Mrc.MoveNext
          End If
      Wend
      MsgBox "这个课程名称不存在，请重新输入！", , "出错啦！"
      Text1.Text = ""
      Exit Sub
   End If


laijinlong:
Txtsql = "select * from 课程表 where "
Txtsql = Txtsql & "课程名称= '" & Trim(Text1.Text) & "'"

Set Rs = ExecuteSQL(Txtsql)
Call Showtext
End Sub

Private Sub Command2_Click()
Text1.Enabled = True
Text2.Enabled = True
Text3.Enabled = True
Command1.Enabled = True
Command2.Enabled = False
Command3.Enabled = True
End Sub

Private Sub Command3_Click()
Rs("课程编号") = Text2.Text
Rs("课程名称") = Text3.Text
Rs.Update
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
Text2.Enabled = False
Text3.Enabled = False
Text1.Text = ""
Command1.Enabled = False
Command2.Enabled = True
Command3.Enabled = False
End Sub

Private Sub Command4_Click()
Unload Me

End Sub

Private Sub Form_Load()
connstr = "Provider = Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\学生信息管理.mdb"
Conn.Open connstr
'Rs.Open "课程表", Conn, adOpenKeyset, adLockPessimistic
Text1.Enabled = False
Text2.Enabled = False
Text3.Enabled = False
Command1.Enabled = False
Command3.Enabled = False
End Sub

Private Sub Form_Unload(Cancel As Integer)
Conn.Close
End Sub

Private Sub Text1_KeyPress(KeyAscii As Integer)
If KeyAscii = 13 Then
    Command1.SetFocus
 End If
End Sub