学生信息管理系统无时无刻不在进行优化，接下来继续给大家分享我对学生信息管理系统的优化，希望对大家有所帮助哦。
一、显示当前数据位置
Private Sub nextCommand_Click() If mrc.EOF = True Then MsgBox "已经是最后一条数据" Else mrc.MoveNext End If Call viewData End Sub Private Sub previousCommand_Click() If mrc.BOF = True Then MsgBox "已经是第一条数据" Else mrc.MovePrevious End If Call viewData End Sub
二、判断输入的分数
Private Sub txtResult_Change() If Val(txtResult.Text) > 150 Then MsgBox "成绩已超出范围，成绩范围为0~150哦" txtResult.SetFocus txtResult.Text = "" End If End Sub
三、修改密码前输入旧密码
txtSQL = "select * from user_Info where user_ID ='" & UserName & "'" Set mrc = ExecuteSQL(txtSQL, MsgText) If (Userpwd = Text2.Text) Then MsgBox "请输入正确的旧密码！" Text2.Text = "" end if
四、新密码和旧密码是否一致
txtSQL = "select * from user_Info where user_ID ='" & UserName & "'" Set mrc = ExecuteSQL(txtSQL, MsgText) If (Userpwd = Text1(1).Text) Then MsgBox "与旧密码重复，请重新修改！" Text1(1).Text = "" Text1(2).Text = "" Text1(1).SetFocus else mrc.Fields(1) = Text1(1).Text mrc.Update mrc.Close MsgBox "密码修改成功！", vbOKOnly + vbExclamation, "修改密码" Unload Me End If
五、不重复添加课程
Static b As Integer Dim s As String Dim w As Integer If listAllcourse.ListIndex <> -1 Then For b = 0 To listSelectcourse.ListCount - 1 If listSelectcourse.List(b) = listAllcourse.List(listAllcourse.ListIndex) Then MsgBox "不能重复添加课程！" w = 3 End If Next If w = 3 Then Exit Sub Else listSelectcourse.AddItem listAllcourse.List(listAllcourse.ListIndex) End If
