Initial commit

Helpers/ApplicationIsolation.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Reflection;
+using System.Security.AccessControl;
+using System.Security.Principal;
+using System.Threading;
+
+namespace Common.Helpers
+{
+    public static class ApplicationIsolation
+    {
+        public static IDisposable GetIsolationHandle()
+        {
+            string applicationName = Assembly.GetEntryAssembly().GetName().Name;
+
+            return GetIsolationHandle(applicationName);
+        }
+
+        public static IDisposable GetIsolationHandle(string applicationName)
+        {
+            // Create mutex security settings
+            MutexSecurity mutexSecurity = new MutexSecurity();
+
+            // Create a world security identifier
+            SecurityIdentifier securityIdentifier = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
+
+            // Create an access rule for the mutex
+            MutexAccessRule mutexAccessRule = new MutexAccessRule(securityIdentifier, MutexRights.FullControl, AccessControlType.Allow);
+
+            // Add the access rule to the mutex security settings
+            mutexSecurity.AddAccessRule(mutexAccessRule);
+
+            // Create the mutex and see if it was newly created
+            bool createdNew;
+            Mutex mutex = new Mutex(false, applicationName, out createdNew, mutexSecurity);
+
+            // Return the mutex if it is new
+            return createdNew ? mutex : null;
+        }
+    }
+}