Visual Basic .NET 網際網路程式設計

Visual Basic .NETChpater 16

16-1Windows NetworkingMicrosoft WindowsWindows NetworkingMicrosoft Windows NT/2000 Server95/98

Network Service ProviderWindows NT/2000 ServerNovell NetWareLinuxAppleTalkDomainServerWindows NT ServerNetwork Resource

Microsoft .NETClass LibraryClass LibraryWindows APIMicrosoft WindowsAPIWindows NetworkingMicrosoft Windows Networking APIWNet

Microsoft Windows Networking APINetwork ProviderMicrosoft Windows NT/2000 ServerNovellLinuxUNIXServerMicrosoft Windows Networking APINetwork IndependenceMicrosoft Windows Networking API

Microsoft Windows Networking APIMPR.DLLMicrosoft Windows Networking APIWNetAddConnectionWNetAddConnection2WNetAddConnection3WNetCancelConnectionWNetCancelConnection2WNetCloseEnumWNetConnectionDialogWnetConnectionDialog1WNetDisconnectDialogWNetDisconnectDialog1

WNetEnumResourceWNetGetConnectionLocal WNetGetLastErrorWNetGetNetworkInformationNetwork ProviderWNetGetProviderNameNetwork ProviderWNetGetResourceInformationNetwork ProviderWNetGetResourceParentNetwork ProviderWNetGetUniversalNameUNCUniversal Naming ConventionWNetGetUserWNetOpenEnumWNetUseConnectionWnetAdd Connection3MultinetGetConnectionPerformance

Microsoft Windows Networking API

Enumerate Network ResourceAdd ConnectionCancel ConnectionNetwork Provider

16-2 /Microsoft WindowsMap Network Driver

WNet APIWNetConnectionDialog Public Function WnetConnectionDialog _ (ByVal hwnd As Integer, _ ByVal dwType As Integer) As IntegerEnd Function

dwType

Integer0-1ERROR_EXTENDED_ERRORWNetGetLastError

16-3 /WNetConnectionDialogWnet Disconnect Dialog

WNetDisconnectDialog Public Function WNetDisconnectDialog _ (ByVal hwnd As Integer, _ ByVal dwType As Integer) As IntegerEnd Function

Integer0-1ERROR_EXTENDED_ERRORWNetGetLastError

16-4 - 1Microsoft Windows Networking APIAPIWNetAddConnection WNetAddConnection2WNetAddConnection3

API

WNetAddConnection _Public Function WNetAddConnection _ (ByVal lpszNetPath As String, _ ByVal lpszPassword As String, _ ByVal lpszLocalName As String) As IntegerEnd Function

WNetAddConnectionlpszNetPathServerLeoHuangD\\LeoHuang\DlpszPassword(lpszLocalName)F:LTP116-4 WNetAddConnection.sln

16-5 - 2WNetAddConnectionWNetAddConnection2Microsoft WindowsWNetAddConnection2ProviderMicrosoft Windows Network

WNetAddConnection2 Declare Function WNetAddConnection2 Lib "mpr.dll" _ Alias "WNetAddConnection2A"_ (ByRef lpNetResource As NETRESOURCE, _ ByVal lpPassword As String, _ ByVal lpUserName As String, _ ByVal dwFlags As Integer) As Integer

NETRESOURCE Structure NETRESOURCE Dim dwScope As Integer Dim dwType As Integer Dim dwDisplayType As Integer Dim dwUsage As Integer Dim lpLocalName As String Dim lpRemoteName As String Dim lpComment As String Dim lpProvider As StringEnd StructuredwScope

dwTypedwDisplayType

dwUsagelpLocalNameF:LTP1

lpRemoteName

lpProviderProviderInteger0-1ERROR_EXTENDED_ERRORWNetGetLastError

16-6 - 3WNetAddConnectionWNetAddConnection2WNet APIWnetAddConnection3Declare Function WNetAddConnection3 Lib "mpr.dll" _ Alias "WNetAddConnection3A" _ (ByVal hwnd As Integer, _ ByRef lpNetResource As NETRESOURCE, _ ByVal lpPassword As String, _ ByVal lpUserName As String, _ ByVal dwFlags As Integer) As Integer

Integer0-1ERROR_EXTENDED_ERRORWNetGetLastError

16-7 - 1Microsoft WindowsPopup Menu(D)

WNet APIAPIWNetCancelConnection WNetCancelConnection2

APIWNetDisconnectDialogWNetDisconnectDialogWNetCancelConnectionWNetCancelConnection2

WNetCancelConnectionDeclare Function WNetCancelConnection Lib "mpr.dll" _ Alias "WNetCancelConnectionA"_ (ByVal lpszName As String, _ ByVal fForce As Integer) As Integer

16-8 - 2WNet APIWNetDisconnectDialogWNetDisconnectDialog1WNetCancelConnectionAPIWNetCancelConnection2

WNetCancelConnection2WNetCancelConnectionlpNamefForcedwFlags

WNetCancelConnection2Declare Function WNetCancelConnection2 Lib "mpr.dll" _ Alias "WNetCancelConnection2A" _ (ByVal lpName As String, _ ByVal dwFlags As Integer, _ ByVal fForce As Integer) As Integer

16-9 Microsoft

Microsoft Windows\\\Server

WNet APIWnetGetConnection Declare Function WNetGetConnection Lib "mpr.dll" _ Alias "WNetGetConnectionA" _ (ByVal lpszLocalName As String, _ ByVal lpszRemoteName As String, _ ByRef cbRemoteName As Integer) As Integer

16-10Microsoft WindowsWNetGetUser Declare Function WNetGetUser Lib "mpr.dll" _ Alias "WNetGetUserA" _ (ByVal lpName As String, _ ByVal lpUserName As String, _ ByRef lpnLength As Integer) As Integer

16-11WNet APIWNet API - WNetGetLastError

WNet APIIntegerdwResultdwResultNO_ERROR=0ERROR_EXTENDED_ERROR=1208WNetGetLastError

WNetGetLastErrorDeclare Function WNetGetLastError Lib "mpr.dll" _ Alias "WNetGetLastErrorA" _ (ByRef lpError As Integer, _ ByVal lpErrorBuf As String, _ ByVal nErrorBufSize As Integer, _ ByVal lpNameBuf As String, _ ByVal nNameBufSize As Integer) As Integer Integer0ERROR_INVALID_ADDRESS

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