C#对文件的共享访问问题

xml", FileShareFileStream fs = new FileStream(@".Open.ReadWrite)
这种形式的文件共享，另一个进程读取目标文件的时候读到的内容为空呢，会不会出现一个进程正在重写目标文件:\.ReadWrite;, FileAccess, FileMode;allSubsys;C

你描述的问题出现在多线程的模式下面,
如果碰巧遇到这个问题它会抛出一个IOException异常
文件“XXXX”正由另一进程使用，因此该进程无法访问该文件。

调用windows的api吧 using system; using system.collections.generic; using system.text; using system.runtime.interopservices; namespace windowsapplication1 { #region windows api enum and struct public enum error_id { error_success = 0, // success error_more_data = 234, error_no_browser_servers_found = 6118, error_invalid_level = 124, error_access_denied = 5, error_invalid_parameter = 87, error_not_enough_memory = 8, error_network_busy = 54, error_bad_netpath = 53, error_no_network = 1222, error_invalid_handle_state = 1609, error_extended_error = 1208 } public enum resource_scope { resource_connected = 1, resource_globalnet = 2, resource_remembered = 3, resource_recent = 4, resource_context = 5 } public enum resource_type { resourcetype_any = 0, resourcetype_disk = 1, resourcetype_print = 2, resourcetype_reserved = 8, } public enum resource_usage { resourceusage_connectable = 1, resourceusage_container = 2, resourceusage_nolocaldevice = 4, resourceusage_sibling = 8, resourceusage_attached = 16, resourceusage_all = (resourceusage_connectable | resourceusage_container | resourceusage_attached), } public enum resource_displaytype { resourcedisplaytype_generic = 0, resourcedisplaytype_domain = 1, resourcedisplaytype_server = 2, resourcedisplaytype_share = 3, resourcedisplaytype_file = 4, resourcedisplaytype_group = 5, resourcedisplaytype_network = 6, resourcedisplaytype_root = 7, resourcedisplaytype_shareadmin = 8, resourcedisplaytype_directory = 9, resourcedisplaytype_tree = 10, resourcedisplaytype_ndscontainer = 11 } [structlayout(layoutkind.sequential)] public struct netresource { public resource_scope dwscope; public resource_type dwtype; public resource_displaytype dwdisplaytype; public resource_usage dwusage; [marshalas(unmanagedtype.lpstr)] public string lplocalname; [marshalas(unmanagedtype.lpstr)] public string lpremotename; [marshalas(unmanagedtype.lpstr)] public string lpcomment; [marshalas(unmanagedtype.lpstr)] public string lpprovider; } #endregion ///

/// 连接网络上的共享文件夹 ///

public class networksharedfolder { [dllimport("mpr.dll")] public static extern int wnetaddconnection2a(netresource[] lpnetresource, string lppassword, string lpusername, int dwflags); [dllimport("mpr.dll")] public static extern int wnetcancelconnection2a(string sharename, int dwflags, int fforce); public static int connect(string remotepath, string localpath, string username, string password) { netresource[] share_driver = new netresource[1]; share_driver[0].dwtype = resource_type.resourcetype_disk; share_driver[0].lplocalname = localpath; share_driver[0].lpremotename = remotepath; disconnect(localpath); int ret = wnetaddconnection2a( share_driver, password, username, 1); return ret; } public static void disconnect(string localpath) { wnetcancelconnection2a(localpath, 1, 1); } public static void test() { int ret = networksharedfolder.connect(@"\\192.168.1.2\log", @"y:", "user1", "user1"); system.console.writeline("connect ret = " + ret); } } }