📄 -
字号:
VERSION 5.00
Object = "{248DD890-BB45-11CF-9ABC-0080C7E7B78D}#1.0#0"; "MSWINSCK.OCX"
Begin VB.Form Form1
Caption = "Form1"
ClientHeight = 4740
ClientLeft = 120
ClientTop = 450
ClientWidth = 4650
LinkTopic = "Form1"
ScaleHeight = 4740
ScaleWidth = 4650
StartUpPosition = 3 '窗口缺省
Begin VB.CommandButton Delete
Caption = "删除"
Height = 495
Left = 3120
TabIndex = 7
Top = 4200
Width = 1095
End
Begin VB.CommandButton Change
Caption = "修改"
Height = 495
Left = 3120
TabIndex = 6
Top = 3360
Width = 1095
End
Begin VB.CommandButton Add
Caption = "添加"
Height = 495
Left = 3120
TabIndex = 5
Top = 2520
Width = 1095
End
Begin MSWinsockLib.Winsock Winsock1
Left = 120
Top = 1680
_ExtentX = 741
_ExtentY = 741
_Version = 393216
End
Begin VB.CommandButton Find
Caption = "查询"
Height = 495
Left = 3120
TabIndex = 2
Top = 1680
Width = 1095
End
Begin VB.TextBox StudentNumber
Height = 500
Left = 1320
TabIndex = 1
Top = 1000
Width = 2895
End
Begin VB.TextBox StudentName
Height = 500
Left = 1320
TabIndex = 0
Top = 300
Width = 2895
End
Begin VB.Label Label2
Alignment = 2 'Center
Caption = "学号"
BeginProperty Font
Name = "宋体"
Size = 14.25
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 350
Left = 350
TabIndex = 4
Top = 1080
Width = 800
End
Begin VB.Label Label1
Alignment = 2 'Center
Caption = "姓名"
BeginProperty Font
Name = "宋体"
Size = 14.25
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 350
Left = 350
TabIndex = 3
Top = 350
Width = 800
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Public cnn As ADODB.Connection 'ado.connection变量
Public rs1 As ADODB.Recordset 'ADODB.Recordset 变量
Public Sub db_open() '连接并打开数据库
Set cnn = New ADODB.Connection
Set rs1 = New ADODB.Recordset
Dim strSQL As String
strSQL = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\user.mdb;Persist Security Info=False "
cnn.Open strSQL '连接数据库
End Sub
Private Sub Add_Click() '添加
Dim strSQL As String
If StudentName.Text <> "" And StudentNumber.Text <> "" Then
Call db_open '连接数据库
strSQL = "select * from 学生信息 where 姓名 = '" & StudentName.Text & "' or 学号='" & StudentNumber.Text & "'"
Set rs1 = cnn.Execute(strSQL) '执行sql查询语句并返回建立记录集
If rs1.EOF = False Then
MsgBox "对不起，该姓名或学号已存在！", vbOKCancel, "提示信息"
cnn.Close '断开与数据库的连接
Exit Sub
End If
If rs1.EOF = True Then
'添加新的信息
strSQL = "INSERT INTO 学生信息 (姓名, 学号) VALUES ('" & StudentName.Text & "', '" & StudentNumber.Text & "')"
cnn.Execute (strSQL) '执行sql查询语句并返回建立记录集
cnn.Close '断开与数据库的连接
MsgBox "数据添加成功！", vbOKCancel, "提示信息"
Exit Sub
End If
End If
If StudentName.Text = "" Or StudentNumber.Text = "" Then
MsgBox "对不起，学号和姓名都不能为空！", vbOKCancel, "提示信息"
Exit Sub
End If
End Sub
Private Sub Change_Click()
Dim strSQL As String
If StudentName.Text <> "" And StudentNumber.Text <> "" Then
Call db_open '连接数据库
strSQL = "Update 学生信息 Set 学号='" & StudentNumber.Text & "' where 姓名='" & StudentName.Text & "'"
cnn.Execute (strSQL) '执行sql查询语句并返回建立记录集
cnn.Close '断开与数据库的连接
MsgBox "数据修改成功！", vbOKCancel, "提示信息"
Exit Sub
End If
If StudentName.Text = "" Or StudentNumber.Text = "" Then
MsgBox "学号和姓名不能为空！", vbOKCancel, "提示信息"
End If
End Sub
Private Sub Delete_Click() '删除
Dim strSQL As String
If StudentName.Text <> "" And StudentNumber.Text <> "" Then
Call db_open '连接数据库
strSQL = "Delete from 学生信息 Where 姓名='" & StudentName.Text & "'"
cnn.Execute (strSQL) '执行sql查询语句并返回建立记录集
cnn.Close '断开与数据库的连接
MsgBox "数据删除成功！", vbOKCancel, "提示信息"
Exit Sub
End If
If StudentName.Text = "" Or StudentNumber.Text = "" Then
MsgBox "你还没有选择需要删除的记录！", vbOKCancel, "提示信息"
End If
End Sub
Private Sub Find_Click() '查询
Dim strSQL As String
'---------------------------------------姓名查询-------------------------------------
If StudentName.Text <> "" Then
Call db_open '连接数据库
strSQL = "select * from 学生信息 where 姓名 = '" & StudentName.Text & "'"
Set rs1 = cnn.Execute(strSQL) '执行sql查询语句并返回建立记录集
If rs1.EOF = False Then
StudentNumber.Text = rs1.Fields("学号").Value '将返回信息显示在界面上的相应控件
cnn.Close '断开与数据库的连接
Exit Sub
End If
If rs1.EOF = True Then
MsgBox "对不起，查无此人！", vbOKCancel, "提示信息"
cnn.Close '断开与数据库的连接
Exit Sub
End If
End If
'---------------------------------------学号查询-------------------------------------
If StudentNumber.Text <> "" Then
Call db_open '连接数据库
strSQL = "select * from 学生信息 where 学号 = '" & StudentNumber.Text & "'"
Set rs1 = cnn.Execute(strSQL) '执行sql查询语句并返回建立记录集
If rs1.EOF = False Then
StudentName.Text = rs1.Fields("姓名").Value '输出表中各字段
cnn.Close
Exit Sub
End If
If rs1.EOF = True Then
MsgBox "对不起，查无此人！", vbOKCancel, "提示信息"
cnn.Close '断开与数据库的连接
Exit Sub
End If
End If
'---------------------------------------输入都为空-------------------------------------
If StudentName.Text = "" And StudentNumber.Text = "" Then
MsgBox "请输入姓名或学号！", vbOKCancel, "提示信息"
Exit Sub
End If
End Sub
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -