Can't share folder to individual user account with WMI.

[aloneplayer]

Hi, All,
I wrote a function to share a folder to individual user account with
WMI.
When I call it :
ShareFolder("c: \\test", "Test", "Shared by Riven", 8,
Environment.Mac hineName, "Administrator" );
The folder will be shared, but nobody has permission to access it.
(The share permissions list of this folder is empty)
Could you help me?

Thanks!

private void ShareFolder(str ing path, string name, string description,
int maxAllowed, string domain, string account)
{
//==0. Create Win32_Trustee
ManagementObjec t trustee = new ManagementClass (new
ManagementPath( "Win32_Trustee" ), null);
trustee["Domain"] = null;
trustee["Name"] = account;
string strSid = this.GetSID(dom ain, account);

//==1. Create win32_ace
ManagementObjec t ACE = new ManagementClass (new
ManagementPath( "Win32_Ace" ), null);
ACE["AccessMask "] = AccessMasks.Mod ify;
ACE["AceFlags"] = AceFlags.OBJECT _INHERIT_ACE |
AceFlags.CONTAI NER_INHERIT_ACE ;
ACE["AceType"] = AceType.Allow;
ACE["Trustee"] = trustee;
//==2. Create Win32_SecurityD escriptor
ManagementObjec t secDescriptor = new ManagementClass (new
ManagementPath( "Win32_Security Descriptor"), null);
secDescriptor["ControlFla gs"] = 4; //SE_DACL_PRESENT
secDescriptor["DACL"] = new object[] { ACE };

//==3. Using Win32_Share
ManagementClass classObj = new ManagementClass (new
ManagementPath( "Win32_Shar e"), null);
ManagementBaseO bject inParams =
classObj.GetMet hodParameters(" Create");
inParams["Access"] = secDescriptor;
inParams["Descriptio n"] = description;
inParams["MaximumAllowed "] = maxAllowed;
inParams["Name"] = name;
//inParams["Password"] = ""; //default is no password
inParams["Path"] = path;
inParams["Type"] = 0; //0: Disk Drive, 1: Print
Queue ,2: Device , 3: IPC

ManagementBaseO bject outParams =
classObj.Invoke Method("Create" , inParams, null);
uint ret =
(uint)(outParam s.Properties["ReturnValu e"].Value);
}
public string GetSID(string domain, string username)
{
string result = null;
ManagementScope scope = new ManagementScope ("root\\cimv2") ;
string queryString = string.Format(" SELECT SID FROM
Win32_UserAccou nt WHERE Domain=\"{0}\" AND Name=\"{1}\"", domain,
username);
SelectQuery userQuery = new SelectQuery(que ryString);
ManagementObjec tSearcher userSearcher = new
ManagementObjec tSearcher(scope , userQuery);
ManagementObjec tCollection queryCollection =
userSearcher.Ge t();

foreach (ManagementObje ct userAccount in queryCollection )
{
result = (string)userAcc ount["SID"];
}
if (result == null)
{
throw new Exception("Can' t fine user info!");
}
return result;
}

[Flags()]
public enum AccessMasks : int
{
ListDirectory = 0x1,
AddFile = 0x2,
AddSubdirectory = 0x4,
ReadExtendedAtt ributes = 0x8,
WriteExtendedAt tributes = 0x10,
Traverse = 0x20,
DeleteChild = 0x40,
ReadAttributes = 0x80,
WriteAttributes = 0x100,
Delete = 0x10000,
ReadControl = 0x20000,
WriteDac = 0x40000,
WriteOwner = 0x80000,
Synchronize = 0x100000,

Read = ListDirectory | ReadExtendedAtt ributes | ReadAttributes
| ReadControl | Synchronize,
ReadAndExecute = Read | Traverse,
Write = AddFile | AddSubdirectory | WriteExtendedAt tributes |
WriteAttributes | Synchronize,
Modify = Read | Write | Delete | Traverse,
FullControl = DeleteChild | WriteDac | WriteOwner | Modify
}

[Flags()]
public enum AceType : byte
{
Allow = 0,// Access Allowed
Denied = 1,// Access Denied
Audit = 2
}
[Flags()]
public enum AceFlags : byte
{
OBJECT_INHERIT_ ACE = 0x1,
CONTAINER_INHER IT_ACE = 0x2,
NO_PROPAGATE_IN HERIT_ACE = 0x4,
INHERIT_ONLY_AC E = 0x8,
INHERITED_ACE = 0x10

}