vb.net三层 vbnet implements
用vb.net编写项目移动。。。求高人指点。。。。
窗体是指由两个列表框（ListBox1、ListBox2）和4个命令按钮（Button1“”按钮，Button2“”按钮，Button3“”按钮，Button4“”按钮）所构成的界面，代码：
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Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Me.Text = "选项移动"
ListBox1.SelectionMode = SelectionMode.MultiSimple
ListBox2.SelectionMode = SelectionMode.One
For i = 1 To 10
ListBox1.Items.Add(Chr(Asc("a") + i - 1))
Next
For i = 1 To 10
ListBox2.Items.Add(i.ToString)
Next
End Sub
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
If ListBox1.SelectedItems Is Nothing Then Exit Sub
Dim b As ListBox.ObjectCollection
For i = 0 To Me.ListBox1.SelectedItems.Count - 1
Me.ListBox2.Items.Add(Me.ListBox1.SelectedItems(0))
Me.ListBox1.Items.RemoveAt(Me.ListBox1.SelectedIndices(0))
Next
End Sub
Private Sub Button3_Click(sender As System.Object, e As System.EventArgs) Handles Button3.Click
If ListBox2.SelectedItems IsNot Nothing Then
ListBox1.Items.Add(ListBox2.SelectedItem)
ListBox2.Items.Remove(ListBox2.SelectedItem)
End If
End Sub
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
For Each itm As Object In ListBox1.Items
ListBox2.Items.Add(itm)
Next
ListBox1.Items.Clear()
End Sub
Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click
For Each itm As Object In ListBox2.Items
ListBox1.Items.Add(itm)
Next
ListBox2.Items.Clear()
End Sub
End Class
VB.NET中标准的实体类怎么写的,请教VB高手指导
'代码来源：代码街codejie.net
'由于在vb.net里变量名不区分大小写（StuName和stuname是一样的），所以个别变量名需要修改
'在vb.net中,模块级变量的命名原则是以m_开头
Public Class Student
Private m_stuNo As String '学生号字段
Private m_stuName As String '学生姓名字段
Private m_stuAge As Integer '学生年龄字段
Private m_stuAddress As String '学生住址字段
'无参构造方法
Public Sub New()
End Sub
'有参构造方法
Public Sub New(ByVal stuNo As String, ByVal stuName As String, ByVal stuAge As Integer, ByVal stuAddress As String)
m_stuNo = stuNo
m_stuName = stuName
m_stuAge = stuAge
m_stuAddress = stuAddress
End Sub
'学生号属性
Public Property StuNo() As String
Get
Return m_stuNo
End Get
Set(ByVal value As String)
m_stuNo = value
End Set
End Property
'学生姓名属性
Public Property StuName() As String
Get
Return m_stuName
End Get
Set(ByVal value As String)
m_stuName = value
End Set
End Property
'学生年龄属性
Public Property StuAge() As Integer
Get
Return m_stuAge
End Get
Set(ByVal value As Integer)
m_stuAge = value
End Set
End Property
'学生住址属性
Public Property StuAddress() As String
Get
Return m_stuAddress
End Get
Set(ByVal value As String)
m_stuAddress = value
End Set
End Property
End Class
vb.net 集成开发的三种模式
设计模式：界面设计和代码编辑
运行模式：运行应用程序
中断模式：暂时中断运行，调试程序
怎么利用VB.NET实现三维绘图
数学上不是有斜二测画法，算好坐标即可画出
或者用AnyCAD的.Net图形控件
也可以调用matlab 实现
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