C#

[assembly: AssemblyKeyFile(@"C:\caskey.snk")]

ObjectQuery query = new ObjectQuery("SELECT * FROM Win32_LogicalShareSecuritySetting");
 ManagementObjectSearcher searcher = new
                    ManagementObjectSearcher(scope, query);

                    ManagementObjectCollection queryCollection = searcher.Get();
                    foreach (ManagementObject m in queryCollection)
                    {
                        string shareName = m["Name"].ToString();
                        string shareLocalPath = ShareManager.GetShareLocalPath(shareName);
                        Console.WriteLine(shareLocalPath);
                        if (folderPath == shareLocalPath)
                        {
                            InvokeMethodOptions options = new InvokeMethodOptions();

                            ManagementBaseObject outParamsMthd =
                            m.InvokeMethod("GetSecurityDescriptor", null, options);//GetSecurityDescriptor
                            ManagementBaseObject descriptor =
                            outParamsMthd["Descriptor"] as ManagementBaseObject;

                            ManagementBaseObject[] dacl = descriptor["DACL"] as
                            ManagementBaseObject[];

                            foreach (ManagementBaseObject ace in dacl)
                            {
                                ManagementBaseObject trustee = ace["Trustee"] as
                                ManagementBaseObject;
                                string domain = (string)trustee["Domain"];
                                if ((string)trustee["Name"] == "Everyone")
                                {
                                    UInt32 mask = (UInt32)ace["AccessMask"];

                                    // using enum formatting (see emumerating the possibilities.doc)       
                                    string enumMask = System.Enum.Format(typeof(Mask), mask, "g");
                                    if (enumMask.Contains("WRITE"))
                                    {
                                        return true;
                                    }
                                }
                            }
                        }