学生信息管理系统代码

1、主要代码如下：1、登录界面代码：Dim cn As New ADODB.ConnectionDim rst As New ADODB.RecordsetPrivate Sub Command1_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset Static i% cn.ConnectionString = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=students info;Data Sou

2、rce=C1847" cn.Open usna = Trim(Text1.Text) mysql = "select * from 用户表 where 用户名='" & usna & "'" rst.Open mysql, cn If rst.EOF Then MsgBox "用户名不存在！" cn.Close Text1.Text = "" Text2.Text = "" Text1.SetFocus Else If Trim(rst("密码

3、") = Trim(Text2.Text) Then 管理界面.Show Else i = i + 1 If i < 3 Then MsgBox "用户名或密码错误！", vbOKOnly + vbExclamation, "警告" cn.Close Text2.Text = "" Text1.Text = "" Text1.SetFocus Else MsgBox "该用户已被锁定！", vbOKOnly + vbExclamation, "警告" End

4、If End If End If End SubPrivate Sub Command2_Click()Text1.Text = ""Text2.Text = ""Text3.Text = ""End Sub2、管理界面代码：Private Sub Sinsert_Click()添加学生信息.ShowEnd SubPrivate Sub Sselect_Click()查询学生信息.ShowEnd SubPrivate Sub sustu_Click()查询更新学生信息.ShowEnd SubPrivate Sub xgmm_Click

5、()修改密码.ShowEnd SubPrivate Sub yhzc_Click()用户注册.ShowEnd Sub3、查询学生信息代码：Dim cn As New ADODB.ConnectionDim rst As New ADODB.RecordsetPrivate Sub Command1_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset cn.ConnectionString = "Provider=SQLOLEDB.1;Persist Security Info=False;User I

6、D=sa;Initial Catalog=students info;Data Source=C1847" cn.Open If Combo1.Text <> "" Then mysql = "select * from 学生信息表 where 系别='" & Trim(Combo1.Text) & "'" rst.Open mysql, cn If rst.EOF Then MsgBox "没有学生!", vbOKOnly + vbExclamation, &

7、quot;警告" Combo1.Text = "" Else With MSFlexGrid1 .TextMatrix(0, 1) = "学号" .TextMatrix(0, 2) = "姓名" .TextMatrix(0, 3) = "性别" .TextMatrix(0, 4) = "年龄" .TextMatrix(0, 5) = "系别" .TextMatrix(0, 6) = "班级" MSFlexGrid1.Rows = 1 '每

8、次查询自动定位到第一行 Do While Not rst.EOF .Rows = .Rows + 1 .CellAlignment = 8 .TextMatrix(.Rows - 1, 1) = rst.Fields("学号") .TextMatrix(.Rows - 1, 2) = rst.Fields("姓名") .TextMatrix(.Rows - 1, 3) = rst.Fields("性别") .TextMatrix(.Rows - 1, 4) = rst.Fields("年龄") .TextMatri

9、x(.Rows - 1, 5) = rst.Fields("系别") .TextMatrix(.Rows - 1, 6) = rst.Fields("班级") rst.MoveNext Loop End With End If ElseIf Combo2.Text <> "" Then mysql = "select * from 学生信息表 where 班级='" & Trim(Combo2.Text) & "'" rst.Open mysql, c

10、n If rst.EOF Then MsgBox "没有学生!", vbOKOnly + vbExclamation, "警告" Combo1.Text = "" Else With MSFlexGrid1 .TextMatrix(0, 1) = "学号" .TextMatrix(0, 2) = "姓名" .TextMatrix(0, 3) = "性别" .TextMatrix(0, 4) = "年龄" .TextMatrix(0, 5) = "

11、系别" .TextMatrix(0, 6) = "班级" MSFlexGrid1.Rows = 1 '每次查询自动定位到第一行 Do While Not rst.EOF .Rows = .Rows + 1 .CellAlignment = 8 .TextMatrix(.Rows - 1, 1) = rst.Fields("学号") .TextMatrix(.Rows - 1, 2) = rst.Fields("姓名") .TextMatrix(.Rows - 1, 3) = rst.Fields("性别&q

12、uot;) .TextMatrix(.Rows - 1, 4) = rst.Fields("年龄") .TextMatrix(.Rows - 1, 5) = rst.Fields("系别") .TextMatrix(.Rows - 1, 6) = rst.Fields("班级") rst.MoveNext Loop End With End If ElseIf Text1.Text <> "" Then mysql = "select * from 学生信息表 where 学号='&q

13、uot; & Trim(Text1.Text) & "'" rst.Open mysql, cn If rst.EOF Then MsgBox "没有学生!", vbOKOnly + vbExclamation, "警告" Combo1.Text = "" Else With MSFlexGrid1 .TextMatrix(0, 1) = "学号" .TextMatrix(0, 2) = "姓名" .TextMatrix(0, 3) = "性

14、别" .TextMatrix(0, 4) = "年龄" .TextMatrix(0, 5) = "系别" .TextMatrix(0, 6) = "班级" MSFlexGrid1.Rows = 1 '每次查询自动定位到第一行 Do While Not rst.EOF .Rows = .Rows + 1 .CellAlignment = 8 .TextMatrix(.Rows - 1, 1) = rst.Fields("学号") .TextMatrix(.Rows - 1, 2) = rst.Fie

15、lds("姓名") .TextMatrix(.Rows - 1, 3) = rst.Fields("性别") .TextMatrix(.Rows - 1, 4) = rst.Fields("年龄") .TextMatrix(.Rows - 1, 5) = rst.Fields("系别") .TextMatrix(.Rows - 1, 6) = rst.Fields("班级") rst.MoveNext Loop End With End IfElse MsgBox "请输入查询条件!&

16、quot;, vbOKOnly + vbExclamation, "警告" End If End SubPrivate Sub Command2_Click()Combo1.Text = ""Combo2.Text = ""Text1.Text = ""End SubPrivate Sub Command3_Click()修改学生信息.ShowEnd Sub '修改学生信息Private Sub Command4_Click() Set cn = New ADODB.Connection Set rst =

17、 New ADODB.Recordset cn.ConnectionString = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=students info;Data Source=C1847" cn.Open mysql = "delete from 学生信息表 where 学号='" & Text1.Text & "'" rst.Open mysql, cn MsgBox "删除成功

18、!", vbOKOnly + vbExclamation, "警告" End SubPrivate Sub Form_Load()Combo1.AddItem "信息服务学院"Combo1.AddItem "电子信息工程系"Combo2.AddItem "40821P"Combo2.AddItem "40811P"Combo2.AddItem "40822P"Combo2.AddItem "40721P"End Sub4、添加学生信息代码Dim

19、cn As New ADODB.ConnectionDim rst As New ADODB.RecordsetPrivate Sub Form_Load()Combo1.AddItem "信息服务学院"Combo1.AddItem "电子信息工程系"Combo2.AddItem "40821P"Combo2.AddItem "40811P"Combo2.AddItem "40822P"Combo2.AddItem "40721P"End SubPrivate Sub Com

20、mand1_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset cn.ConnectionString = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=students info;Data Source=C1847" cn.OpenDim sex As String usna = Trim(Text1.Text) mysql = "select * from 学生信息表 wh

21、ere 学号='" & usna & "'" rst.Open mysql, cn If rst.EOF Then rst.Close Else rst.Close MsgBox "该学生信息已存在!", vbOKOnly + vbExclamation, "警告" Text1.Text = "" Text2.Text = "" Text3.Text = "" Combo1.Text = "" Combo2.Tex

22、t = "" Option1.Value = False Text1.SetFocus End IfIf Text1.Text = "" Then MsgBox "请输入学号！", vbOKOnly + vbExclamation, "警告" Text1.SetFocus Exit Sub End IfIf Text2.Text = "" Then MsgBox "请输入姓名！", vbOKOnly + vbExclamation, "警告" Text2.

23、SetFocus Exit Sub End IfIf Text3.Text = "" Then MsgBox "请输入年龄！", vbOKOnly + vbExclamation, "警告" Text3.SetFocus Exit Sub End IfIf Option1.Value Then sex = "男" Else sex = "女"End Ifxh = Trim(Text1.Text)xm = Trim(Text2.Text)xb = sexnl = Trim(Text3.Text)x

24、ofy = Trim(Combo1.Text)bj = Trim(Combo2.Text)mysql = "insert into 学生信息表(学号,姓名,性别,年龄,系别,班级) values ('" & xh & "','" & xm & "','" & xb & "','" & nl & "','" & xofy & "'

25、,'" & bj & "')"rst.Open mysql, cnMsgBox ("信息添加成功!") Text1.Text = "" Text2.Text = "" Text3.Text = "" Combo1.Text = "" Combo2.Text = "" Option1.Value = FalseEnd Sub5、修改密码：Dim rst As New ADODB.Recordset Dim cn As

26、 New ADODB.ConnectionPrivate Sub Command1_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset cn.ConnectionString = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=students info;Data Source=C1847" cn.Open If Text1.Text = "" Then MsgBox

27、"请输入密码！", vbOKOnly + vbExclamation, "警告" Text1.SetFocus Exit Sub End IfIf Text2.Text = "" Then MsgBox "请输入新密码！", vbOKOnly + vbExclamation, "警告" Text2.SetFocus Exit Sub End IfIf Text3.Text = "" Then MsgBox "请确认输入的新密码！", vbOKOnly +

28、vbExclamation, "警告" Text3.SetFocus Exit Sub End IfIf Text2.Text = Text3.Text Thenxmm = Trim(Text2.Text)mysql = "update 用户表 set 密码 = '" & xmm & "' where 用户名 = '" & 登陆.Text1.Text & "'"rst.Open mysql, cnMsgBox ("密修改成功!")E

29、nd If End SubPrivate Sub Command2_Click()Text1.Text = ""Text2.Text = ""Text3.Text = ""End Sub6、修改学生信息代码：Dim cn As New ADODB.ConnectionDim rst As New ADODB.RecordsetPrivate Sub Command1_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset cn.ConnectionStri

30、ng = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=students info;Data Source=C1847" cn.Open usna = Trim(Text1.Text) mysql = "select * from 学生信息表 where 学号='" & usna & "'" rst.Open mysql, cn rst.Close mysql = "delete from

31、 学生信息表 where 学号='" & Text1.Text & "'" rst.Open mysql, cn If Text1.Text = "" Then MsgBox "请输入学号！", vbOKOnly + vbExclamation, "警告" Text1.SetFocus Exit Sub End IfIf Text2.Text = "" Then MsgBox "请输入姓名！", vbOKOnly + vbExclam

32、ation, "警告" Text2.SetFocus Exit Sub End IfIf Text3.Text = "" Then MsgBox "请输入年龄！", vbOKOnly + vbExclamation, "警告" Text3.SetFocus Exit Sub End IfIf Option1.Value Then sex = "男" Else sex = "女"End Ifxh = Trim(Text1.Text)xm = Trim(Text2.Text)xb

33、 = sexnl = Trim(Text3.Text)xofy = Trim(Combo1.Text)bj = Trim(Combo2.Text)mysql = "insert into 学生信息表(学号,姓名,性别,年龄,系别,班级) values ('" & xh & "','" & xm & "','" & xb & "','" & nl & "','"

34、& xofy & "','" & bj & "')"rst.Open mysql, cnMsgBox ("信息修改成功!") Text1.Text = "" Text2.Text = "" Text3.Text = "" Combo1.Text = "" Combo2.Text = "" Option1.Value = False End SubPrivate Sub Form_L

35、oad()Combo1.AddItem "信息服务学院"Combo1.AddItem "电子信息工程系"Combo2.AddItem "40821P"Combo2.AddItem "40811P"Combo2.AddItem "40822P"Combo2.AddItem "40721P"End Sub7、用户注册代码：Dim rst As New ADODB.Recordset Dim cn As New ADODB.ConnectionPrivate Sub Command

36、1_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset cn.ConnectionString = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=students info;Data Source=C1847" cn.Open If Text1.Text = "" Then MsgBox "请输入用户名！", vbOKOnly + vbExclam

37、ation, "警告" Text1.SetFocus Exit Sub End IfIf Text2.Text = "" Then MsgBox "请输入密码！", vbOKOnly + vbExclamation, "警告" Text2.SetFocus Exit Sub End IfIf Text3.Text = "" Then MsgBox "请再次输入密码！", vbOKOnly + vbExclamation, "警告" Text3.SetFoc

38、us Exit Sub End Ifsryhm = Trim(Text1.Text)srmm = Trim(Text2.Text)mysql = "insert into 用户表(用户名,密码) values ('" & sryhm & "','" & srmm & "')"rst.Open mysql, cnMsgBox ("用户添加成功!")Text1.Text = ""Text2.Text = ""Text

39、3.Text = "" End Sub '添加用户Private Sub Command2_Click()Text1.Text = ""Text2.Text = ""Text3.Text = ""End Sub '重置按钮Private Sub Command3_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset cn.ConnectionString = "Provider=SQLOLEDB.1;Pers

40、ist Security Info=False;User ID=sa;Initial Catalog=students info;Data Source=C1847" cn.Open usna = Trim(Text1.Text) mysql = "select * from 用户表 where 用户名='" & usna & "'" rst.Open mysql, cn If rst.EOF Then MsgBox "用户名可用！" Else MsgBox "用户名已存在！&quo

41、t;, vbOKOnly + vbExclamation, "警告" Text1.Text = "" Text2.Text = "" Text3.Text = "" Text1.SetFocus Exit Sub End IfEnd Sub '检查用户名Private Sub Command4_Click() Set cn = New ADODB.Connection Set rst = New ADODB.Recordset cn.ConnectionString = "Provider=SQLOLEDB.1;Persist Securit