Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Workflow.Activities/Interfaces.cs

@@ -0,0 +1,50 @@
+namespace System.Workflow.Activities
+{
+    using System;
+    using System.Collections;
+    using System.Workflow.ComponentModel;
+    using System.Workflow.ComponentModel.Design;
+    using System.Collections.Generic;
+    using System.Transactions;
+    using System.Workflow.Runtime.Hosting;
+    using System.Workflow.Runtime;
+    using System.Workflow.ComponentModel.Compiler;
+
+    [Serializable]
+    [Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
+    public sealed class ConditionalEventArgs : EventArgs
+    {
+        bool result;
+
+        public bool Result
+        {
+            get
+            {
+                return result;
+            }
+            set
+            {
+                result = value;
+            }
+        }
+
+        public ConditionalEventArgs()
+            : this(false)
+        {
+
+        }
+
+        public ConditionalEventArgs(bool result)
+        {
+            this.result = result;
+        }
+    }
+
+    [Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
+    public interface IEventActivity
+    {
+        void Subscribe(ActivityExecutionContext parentContext, IActivityEventListener<QueueEventArgs> parentEventHandler);
+        void Unsubscribe(ActivityExecutionContext parentContext, IActivityEventListener<QueueEventArgs> parentEventHandler);
+        IComparable QueueName { get; }
+    }
+}