Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Workflow.Runtime/WorkflowEnvironment.cs

@@ -0,0 +1,44 @@
+#pragma warning disable 1634, 1691
+using System;
+using System.Collections;
+using System.Workflow.ComponentModel;
+using System.Workflow.Runtime;
+using System.Diagnostics;
+using System.Transactions;
+
+namespace System.Workflow.Runtime
+{
+    [Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
+    public static class WorkflowEnvironment /*: IDisposable*/
+    {
+        public static IWorkBatch WorkBatch
+        {
+            get
+            {
+                IWorkBatch currentBatch = ServiceEnvironment.WorkBatch;
+
+#pragma warning disable 56503
+                if (currentBatch == null)
+                    throw new System.InvalidOperationException(ExecutionStringManager.WorkBatchNotFound);
+#pragma warning restore 56503
+
+                return currentBatch;
+            }
+        }
+
+        public static Guid WorkflowInstanceId
+        {
+            get
+            {
+#pragma warning disable 56503
+                Guid currentInstanceId = ServiceEnvironment.WorkflowInstanceId;
+
+                if (currentInstanceId == Guid.Empty)
+                    throw new System.InvalidOperationException(ExecutionStringManager.InstanceIDNotFound);
+#pragma warning restore 56503
+
+                return currentInstanceId;
+            }
+        }
+    }
+}