If Dir(strPubImagePath, vbDirectory) = "" Then
MsgBox "错误:初始化图象资料夹不存在,请在参数表中重新设置!", vbCritical, msgAwakeYou
End If
如果 strPubImagePath 是本地路径 判断是很快
如果strPubImagePath 是网络路径 并且不存在这样的路径如(\\192.168.1.10\develop\photo\ 网络不上存在这样的一个用户电脑 192.168.1.10)
这是就会出现很慢很慢的情况不知大家有什么好的办法可以解决
MsgBox "错误:初始化图象资料夹不存在,请在参数表中重新设置!", vbCritical, msgAwakeYou
End If
如果 strPubImagePath 是本地路径 判断是很快
如果strPubImagePath 是网络路径 并且不存在这样的路径如(\\192.168.1.10\develop\photo\ 网络不上存在这样的一个用户电脑 192.168.1.10)
这是就会出现很慢很慢的情况不知大家有什么好的办法可以解决
我是通過腳本ping一下﹐然后執行程序的 "cmd /c ping 192.168.1.10 /n 1"
記號﹐純vb不會﹐希望高手賜教。
學習中...............
Declare Function WNetAddConnection2 Lib "mpr.dll" Alias _
"WNetAddConnection2A" (lpNetResource As NETRESOURCE, _
ByVal lpPassword As String, ByVal lpUserName As String, _
ByVal dwFlags As Long) As Long
可以判断是否能够访问网络电脑
Dim fldr As String
fldr = "\\192.168.1.10\develop\photo\"
Set fso = CreateObject("Scripting.FileSystemObject")
If (fso.FolderExists(fldr)) Then
msg = fldr & " 存在。"
Else
msg = fldr & " 不存在。"
End If这个倒不太慢,只用了十几秒
Private Const FILE_ATTRIBUTE_DIRECTORY = &H10Public Function IsFileOk(ByVal szFileName As String) As Boolean
On Error Resume Next
Dim ret As Long
IsFileOk = False
ret = GetFileAttributes(szFileName)
If ret = -1 Then Exit Function
IsFileOk = IIf((ret And FILE_ATTRIBUTE_DIRECTORY), False, True)
End FunctionPublic Function IsFolderOk(ByVal szFolderName As String) As Boolean
On Error Resume Next
Dim ret As Long
IsFolderOk = False
ret = GetFileAttributes(szFolderName)
If ret = -1 Then Exit Function
IsFolderOk = IIf((ret And FILE_ATTRIBUTE_DIRECTORY), True, False)
End Function
Text1.Text = IsFolderOk("\\192.168.1.10\develop\photo\")
你自己试一啦!一样是卡得很,和用vbs的那个一样。
Dim strPubImagePath As String
strPubImagePath = "\\127.0.0.1\develop\photo\"
If Dir(strPubImagePath, vbDirectory) = "" Then
MsgBox "错误:初始化图象资料夹不存在,请在参数表中重新设置!", vbCritical, msgAwakeYou
End If试过的,是等了好久后就提示出错了,用本地路径就没问题,是不是DIR函数不支持网络的路径啊?
楼主的用上面的代码也能正常运行吗?
Private Sub Command1_Click()
fname = "\\Gtr-c1c5e1aef88\本地磁盘 (F)\sfx.log"
MsgBox IIf(Dir(fname) <> "", "文件存在", "文件不存在")
End SubPrivate Sub Command2_Click()
fname = "\\Gtr-c1c5e1aef88\本地磁盘 (F)\桌面我的文档"
MsgBox IIf(Dir(fname, vbDirectory) <> "", "文件夹存在", "文件夹不存在")
End Sub
代码全'ping ip的例题.有了这个好快的. 回复内容过长.....倒Option Explicit
Public Const IP_STATUS_BASE = 11000
Public Const IP_SUCCESS = 0
Public Const IP_BUF_TOO_SMALL = (11000 + 1)
Public Const IP_DEST_NET_UNREACHABLE = (11000 + 2)
Public Const IP_DEST_HOST_UNREACHABLE = (11000 + 3)
Public Const IP_DEST_PROT_UNREACHABLE = (11000 + 4)
Public Const IP_DEST_PORT_UNREACHABLE = (11000 + 5)
Public Const IP_NO_RESOURCES = (11000 + 6)
Public Const IP_BAD_OPTION = (11000 + 7)
Public Const IP_HW_ERROR = (11000 + 8)
Public Const IP_PACKET_TOO_BIG = (11000 + 9)
Public Const IP_REQ_TIMED_OUT = (11000 + 10)
Public Const IP_BAD_REQ = (11000 + 11)
Public Const IP_BAD_ROUTE = (11000 + 12)
Public Const IP_TTL_EXPIRED_TRANSIT = (11000 + 13)
Public Const IP_TTL_EXPIRED_REASSEM = (11000 + 14)
Public Const IP_PARAM_PROBLEM = (11000 + 15)
Public Const IP_SOURCE_QUENCH = (11000 + 16)
Public Const IP_OPTION_TOO_BIG = (11000 + 17)
Public Const IP_BAD_DESTINATION = (11000 + 18)
Public Const IP_ADDR_DELETED = (11000 + 19)
Public Const IP_SPEC_MTU_CHANGE = (11000 + 20)
Public Const IP_MTU_CHANGE = (11000 + 21)
Public Const IP_UNLOAD = (11000 + 22)
Public Const IP_ADDR_ADDED = (11000 + 23)
Public Const IP_GENERAL_FAILURE = (11000 + 50)
Public Const MAX_IP_STATUS = 11000 + 50
Public Const IP_PENDING = (11000 + 255)
Public Const PING_TIMEOUT = 200
Public Const WS_VERSION_REQD = &H101
Public Const WS_VERSION_MAJOR = WS_VERSION_REQD \ &H100 And &HFF&
Public Const WS_VERSION_MINOR = WS_VERSION_REQD And &HFF&
Public Const MIN_SOCKETS_REQD = 1
Public Const SOCKET_ERROR = -1Public Const MAX_WSADescription = 256
Public Const MAX_WSASYSStatus = 128Public Type ICMP_OPTIONS
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End TypeDim ICMPOPT As ICMP_OPTIONSPublic Type ICMP_ECHO_REPLY
Address As Long
status As Long
RoundTripTime As Long
DataSize As Long
DataPointer As Long
Options As ICMP_OPTIONS
Data As String * 250
End TypePublic Type HOSTENT
hName As Long
hAliases As Long
hAddrType As Integer
hLen As Integer
hAddrList As Long
End TypePublic Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To MAX_WSADescription) As Byte
szSystemStatus(0 To MAX_WSASYSStatus) As Byte
wMaxSockets As Long
wMaxUDPDG As Long
dwVendorInfo As Long
End TypePublic Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Public Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
Public Declare Function IcmpSendEcho Lib "icmp.dll" (ByVal IcmpHandle As Long, ByVal DestinationAddress As Long, ByVal RequestData As String, ByVal RequestSize As Long, ByVal RequestOptions As Long, ReplyBuffer As ICMP_ECHO_REPLY, ByVal ReplySize As Long, ByVal Timeout As Long) As Long
Public Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long
Public Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Public Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long
Public Declare Function gethostname Lib "WSOCK32.DLL" (ByVal szHost As String, ByVal dwHostLen As Long) As Long
Public Declare Sub RtlMoveMemory Lib "kernel32" (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Public Function GetStatusCode(status As Long) As String
Dim msg As String
Select Case status
Case IP_SUCCESS: msg = "ip success"
Case IP_BUF_TOO_SMALL: msg = "ip buf too_small"
Case IP_DEST_NET_UNREACHABLE: msg = "ip dest net unreachable"
Case IP_DEST_HOST_UNREACHABLE: msg = "ip dest host unreachable"
Case IP_DEST_PROT_UNREACHABLE: msg = "ip dest prot unreachable"
Case IP_DEST_PORT_UNREACHABLE: msg = "ip dest port unreachable"
Case IP_NO_RESOURCES: msg = "ip no resources"
Case IP_BAD_OPTION: msg = "ip bad option"
Case IP_HW_ERROR: msg = "ip hw_error"
Case IP_PACKET_TOO_BIG: msg = "ip packet too_big"
Case IP_REQ_TIMED_OUT: msg = "ip req timed out"
Case IP_BAD_REQ: msg = "ip bad req"
Case IP_BAD_ROUTE: msg = "ip bad route"
Case IP_TTL_EXPIRED_TRANSIT: msg = "ip ttl expired transit"
Case IP_TTL_EXPIRED_REASSEM: msg = "ip ttl expired reassem"
Case IP_PARAM_PROBLEM: msg = "ip param_problem"
Case IP_SOURCE_QUENCH: msg = "ip source quench"
Case IP_OPTION_TOO_BIG: msg = "ip option too_big"
Case IP_BAD_DESTINATION: msg = "ip bad destination"
Case IP_ADDR_DELETED: msg = "ip addr deleted"
Case IP_SPEC_MTU_CHANGE: msg = "ip spec mtu change"
Case IP_MTU_CHANGE: msg = "ip mtu_change"
Case IP_UNLOAD: msg = "ip unload"
Case IP_ADDR_ADDED: msg = "ip addr added"
Case IP_GENERAL_FAILURE: msg = "ip general failure"
Case IP_PENDING: msg = "ip pending"
Case PING_TIMEOUT: msg = "ping timeout"
Case Else: msg = "unknown msg returned"
End Select
GetStatusCode = CStr(status) & " [ " & msg & " ]"
End Function
Public Function HiByte(ByVal wParam As Long) As Integer
HiByte = wParam \ &H100 And &HFF&
End Function
Public Function LoByte(ByVal wParam As Long) As Integer
LoByte = wParam And &HFF&
End Function
Public Function Ping(szAddress As String, ECHO As ICMP_ECHO_REPLY) As Long
Dim hPort As Long
Dim dwAddress As Long
Dim sDataToSend As String
Dim iOpt As Long
sDataToSend = "Echo This"
dwAddress = AddressStringToLong(szAddress)
hPort = IcmpCreateFile()
If IcmpSendEcho(hPort, dwAddress, sDataToSend, Len(sDataToSend), 0, ECHO, Len(ECHO), PING_TIMEOUT) Then
'如果ping成功,状态返回0。
Ping = ECHO.RoundTripTime
Else
Ping = ECHO.status * -1
End If
Call IcmpCloseHandle(hPort)
End Function
Function AddressStringToLong(ByVal tmp As String) As Long
Dim i As Integer
Dim parts(1 To 4) As String
i = 0
'转换IP地址
While InStr(tmp, ".") > 0
i = i + 1
parts(i) = Mid(tmp, 1, InStr(tmp, ".") - 1)
tmp = Mid(tmp, InStr(tmp, ".") + 1)
i = i + 1
parts(i) = tmp
If i <> 4 Then
AddressStringToLong = 0
Exit Function
End If
AddressStringToLong = Val("&H" & Right("00" & Hex(parts(4)), 2) & Right("00" & Hex(parts(3)), 2) & Right("00" & Hex(parts(2)), 2) & Right("00" & Hex(parts(1)), 2))
End Function
Public Sub SocketsCleanup()
Dim X As Long
'关闭Sockets
X = WSACleanup()
If X <> 0 Then
MsgBox "Windows Sockets error " & Trim$(Str$(X)) & " occurred in Cleanup.", vbExclamation
End If
End Sub
Public Function SocketsInitialize() As Boolean
Dim WSAD As WSADATA
Dim X As Integer
Dim szLoByte As String
Dim szHiByte As String
Dim szBuf As String
'初始化Socket
X = WSAStartup(WS_VERSION_REQD, WSAD)
If X <> 0 Then
MsgBox "Windows Sockets for 32 bit Windows " & "environments is not successfully responding."
Exit Function
End If
If LoByte(WSAD.wVersion) < WS_VERSION_MAJOR Or (LoByte(WSAD.wVersion) = WS_VERSION_MAJOR And HiByte(WSAD.wVersion) < WS_VERSION_MINOR) Then
szHiByte = Trim$(Str$(HiByte(WSAD.wVersion)))
szLoByte = Trim$(Str$(LoByte(WSAD.wVersion)))
szBuf = "Windows Sockets Version " & szLoByte & "." & szHiByte
szBuf = szBuf & " is not supported by Windows " & "Sockets for 32 bit Windows environments."
MsgBox szBuf, vbExclamation
Exit Function
End If
If WSAD.wMaxSockets < MIN_SOCKETS_REQD Then
szBuf = "This application requires a minimum of " & Trim$(Str$(MIN_SOCKETS_REQD)) & " supported sockets."
MsgBox szBuf, vbExclamation
Exit Function
End If
SocketsInitialize = True
End Function
'--------------------------------------
Private Sub Command1_Click()
Dim ECHO As ICMP_ECHO_REPLY
Dim pos As Integer
If SocketsInitialize() Then
'ping地址
Call Ping((Text2), ECHO)
'显示ping结果
Text1(0) = GetStatusCode(ECHO.status)
Text1(1) = ECHO.RoundTripTime & " ms"
Text1(2) = ECHO.DataSize & " bytes"
If Left$(ECHO.Data, 1) <> Chr$(0) Then
pos = InStr(ECHO.Data, Chr$(0))
Text1(3) = Left$(ECHO.Data, pos - 1)
End If
Text1(4) = ECHO.DataPointer
SocketsCleanup
End If
End SubPrivate Sub Form_Load()End Sub
大哥,帮帮忙看看好吗?
怎么没人回贴。
http://topic.csdn.net/u/20080524/10/acbdcfbc-25a6-4531-b595-0249428de888.html
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