frmaddcourse.frm

大学数据库原理的课程设计

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 frmAddCourse 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "添加课程"
   ClientHeight    =   2295
   ClientLeft      =   1995
   ClientTop       =   2130
   ClientWidth     =   6450
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2295
   ScaleWidth      =   6450
   Begin VB.CommandButton cmdOk 
      Caption         =   "确认添加"
      Default         =   -1  'True
      Height          =   332
      Left            =   3480
      TabIndex        =   7
      Top             =   1740
      Width           =   1215
   End
   Begin VB.CommandButton cmdCancel 
      Caption         =   "退出"
      Height          =   332
      Left            =   4800
      TabIndex        =   6
      Top             =   1740
      Width           =   1215
   End
   Begin VB.Frame Frame1 
      Caption         =   "添加课程："
      Height          =   1332
      Left            =   3120
      TabIndex        =   3
      Top             =   240
      Width           =   3132
      Begin VB.TextBox txtCourseName 
         Height          =   264
         Left            =   1080
         TabIndex        =   1
         Top             =   840
         Width           =   1812
      End
      Begin VB.TextBox txtCourseNo 
         Height          =   264
         Left            =   1080
         TabIndex        =   0
         Top             =   360
         Width           =   1812
      End
      Begin VB.Label Label2 
         AutoSize        =   -1  'True
         Caption         =   "课程名称"
         Height          =   180
         Left            =   240
         TabIndex        =   5
         Top             =   888
         Width           =   720
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "课程编号"
         Height          =   180
         Left            =   240
         TabIndex        =   4
         Top             =   408
         Width           =   720
      End
   End
   Begin MSDataGridLib.DataGrid DataGrid1 
      Height          =   1695
      Left            =   120
      TabIndex        =   8
      Top             =   360
      Width           =   2775
      _ExtentX        =   4895
      _ExtentY        =   2990
      _Version        =   393216
      AllowUpdate     =   0   'False
      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 
            ColumnWidth     =   1019.906
         EndProperty
         BeginProperty Column01 
         EndProperty
      EndProperty
   End
   Begin MSAdodcLib.Adodc Adodc1 
      Height          =   315
      Left            =   4560
      Top             =   1920
      Visible         =   0   'False
      Width           =   1815
      _ExtentX        =   3201
      _ExtentY        =   556
      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         =   "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Stud97.mdb;Persist Security Info=False"
      OLEDBString     =   "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Stud97.mdb;Persist Security Info=False"
      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 VB.Label Label3 
      AutoSize        =   -1  'True
      Caption         =   "现有课程："
      Height          =   180
      Left            =   240
      TabIndex        =   2
      Top             =   120
      Width           =   900
   End
End
Attribute VB_Name = "frmAddCourse"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'添加课程窗体frmAddCourse
Option Explicit
Dim sql As String

Private Sub cmdCancel_Click() '退出
    Unload Me
End Sub

Private Sub cmdOk_Click()
    '各文本框若为空白，提示重新输入
    If Trim$(txtCourseNo.Text) = "" Then
        MsgBox "请输入课程编号！", vbExclamation
        txtCourseNo.SetFocus
        Exit Sub
    End If
    If Trim$(txtCourseName.Text) = "" Then
        MsgBox "请输入课程名称！", vbExclamation
        txtCourseName.SetFocus
        Exit Sub
    End If
    '检查是否有重复课号(利用记录集的Find方法)
    Adodc1.Refresh
    Adodc1.Recordset.Find ("课号='" & txtCourseNo.Text & "'")
    If Not Adodc1.Recordset.EOF Then              '若已有该课号
        MsgBox "课程编号重复，请重新输入！", vbExclamation
        With txtCourseNo            '焦点返回课号框
            .SelStart = 0
            .SelLength = Len(.Text)
            .SetFocus
        End With
        Exit Sub
    End If
    With Adodc1.Recordset
        .AddNew                           '添加记录
        '为各字段赋值
        .Fields(0) = Trim$(txtCourseNo.Text)    '课号
        .Fields(1) = Trim$(txtCourseName.Text)  '课名
        .Update                           '更新数据库
        .Requery                          '重新查询
    End With
    Set DataGrid1.DataSource = Adodc1    '更新网格
    txtCourseNo.Text = ""
    txtCourseName.Text = ""
    txtCourseNo.SetFocus
    MsgBox "课程信息已成功添加！", vbInformation
End Sub

Private Sub Form_Load()
    sql = "SELECT * FROM 课程信息 ORDER BY 课号"  'SQL语句用于创建动态记录集
    Adodc1.RecordSource = sql       '设置记录源为动态记录集
    With DataGrid1
        Set .DataSource = Adodc1
        .AllowUpdate = False
        .Columns(0).Width = 1000
    End With
End Sub

Private Sub Form_Unload(Cancel As Integer)
    frmMain.Show    '显示主窗体
End Sub