Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Activities/System/Activities/NativeActivityTransactionContext.cs

@@ -0,0 +1,36 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace System.Activities
+{
+    using System.Activities.Runtime;
+    using System.Runtime;
+    using System.Transactions;
+    
+    [Fx.Tag.XamlVisible(false)]
+    public sealed class NativeActivityTransactionContext : NativeActivityContext
+    {
+        ActivityExecutor executor;
+        RuntimeTransactionHandle transactionHandle;
+
+        internal NativeActivityTransactionContext(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarks, RuntimeTransactionHandle handle)
+            : base(instance, executor, bookmarks)
+        {
+            this.executor = executor;
+            this.transactionHandle = handle;
+        }
+
+        public void SetRuntimeTransaction(Transaction transaction)
+        {
+            ThrowIfDisposed();
+
+            if (transaction == null)
+            {
+                throw FxTrace.Exception.ArgumentNull("transaction");
+            }
+
+            this.executor.SetTransaction(this.transactionHandle, transaction, transactionHandle.Owner, this.CurrentInstance);
+        }
+    }
+}