vb.net改只读 VB如何将只读变为可编辑
VB.NET 中,如何声明内部可写,外部只读的变量?
ReadOnly Property MyId() As String
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Get
Return Me.Id
End Get
End Property
C#这个代码好像只要2行。。
貌似只有这种方法了。
vb.net如何设计一个只读属性
1、将下列函数除掉
Set(ByVal value As Boolean)’暂定为只读属性
m_SetFront = value
End Set
2、保留函数，定义为空函数
Set(ByVal value As Boolean)’暂定为只读属性
End Set
VB.net 中 属性“Chars”为“ReadOnly 是什么意思 怎么解决
ReadOnly是只读的意思，是不能赋值的属性。
属性有三种类型
Class a
Property 可读写属性A As String
Get
End Get
Set(ByVal value As String)
End Set
End Property
ReadOnly Property 只读属性B As String
Get
End Get
End Property
WriteOnly Property 只写属性C As String
Set(ByVal value As String)
End Set
End Property
End Class
解决的方法是：如果该类是你自己创建的类，那么你只要将该类的Chars属性改成可读写属性就可以了，类似上面的属性A结构。如果这个类不是自定义类，那就得继承此类，再将该属性改写为可读写属性。
如何用VB对WIN2000共享的文件设置权限为只读
2000系统下API实现目录共享/删除
ACCESS_READ
共享类型
Private Const STYPE_ALL As Long = -1
Private Const STYPE_DISKTREE As Long = 0
Private Const STYPE_PRINTQ As Long = 1
Private Const STYPE_DEVICE As Long = 2
Private Const STYPE_IPC As Long = 3
Private Const STYPE_SPECIAL As Long = H80000000
'共享权限
Private Const ACCESS_READ As Long = H1
Private Const ACCESS_WRITE As Long = H2
Private Const ACCESS_CREATE As Long = H4
Private Const ACCESS_EXEC As Long = H8
Private Const ACCESS_DELETE As Long = H10
Private Const ACCESS_ATRIB As Long = H20
Private Const ACCESS_PERM As Long = H40
Private Const ACCESS_ALL As Long = ACCESS_READ Or _
ACCESS_WRITE Or _
ACCESS_CREATE Or _
ACCESS_EXEC Or _
ACCESS_DELETE Or _
ACCESS_ATRIB Or _
ACCESS_PERM
'共享信息
Private Type SHARE_INFO_2
shi2_netname As Long '共享名
shi2_type As Long '类型
shi2_remark As Long '备注
shi2_permissions As Long '权限
shi2_max_uses As Long '最大用户
shi2_current_uses As Long '
shi2_path As Long '路径
shi2_passwd As Long '密码
End Type
'设置共享
Private Declare Function NetShareAdd Lib "netapi32" _
(ByVal ServerName As Long, _
ByVal level As Long, _
buf As Any, _
parmerr As Long) As Long
'删除共享
Private Declare Function NetShareDel Lib "netapi32.dll" _
(ByVal ServerName As Long, _
ByVal ShareName As Long, _
ByVal dword As Long) As Long
'设置共享
Private Sub Command1_Click()
Dim success As Long
success = ShareAdd("\\XP","C:\","DOWNLOAD","资源目录","")
End Sub
'删除共享
Private Sub Command2_Click()
Dim success As Long
success = DelShare("\\XP","DOWNLOAD")
End Sub
'设置共享(返回0 为成功)
'参数:
'sServer 计算机名
'sSharePath 要共享路径
'sShareName 显示的共享名
'sShareRemark 备注
'sSharePw 密码
Private Function ShareAdd(sServer As String, _
sSharePath As String, _
sShareName As String, _
sShareRemark As String, _
sSharePw As String) As Long
Dim lngServer As Long
Dim lngNetname As Long
Dim lngPath As Long
Dim lngRemark As Long
Dim lngPw As Long
Dim parmerr As Long
Dim si2 As SHARE_INFO_2
lngServer = StrPtr(sServer) '转成地址
lngNetname = StrPtr(sShareName)
lngPath = StrPtr(sSharePath)
'如果有备注信息
If Len(sShareRemark) 0 Then
lngRemark = StrPtr(sShareRemark)
End If
'如果有密码
If Len(sSharePw) 0 Then
lngPw = StrPtr(sSharePw)
End If
'初始化共享信息
With si2
.shi2_netname = lngNetname
.shi2_path = lngPath
.shi2_remark = lngRemark
.shi2_type = STYPE_DISKTREE
.shi2_permissions = ACCESS_ALL
.shi2_max_uses = -1
.shi2_passwd = lngPw
End With
'设置共享(用户名,共享类型,共享信息,)
ShareAdd = NetShareAdd(lngServer, _
2, _
si2, _
parmerr)
End Function
'删除共享(返回0 表示成功)
'参数:
'sServer 计算机名
'sShareName 共享名
Private Function DelShare(sServer As String, _
sShareName As String) As Long
Dim lngServer As Long '计算机名
Dim lngNetname As Long '共享名
lngServer = StrPtr(sServer) '转成地址
lngNetname = StrPtr(sShareName)
'删除共享
DelShare = NetShareDel(lngServer, lngNetname, 0)
End Function
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