Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,71 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace System.Activities
+{
+    using System;
+    using System.Activities.Validation;
+    using System.Collections.Generic;
+    using System.Diagnostics.CodeAnalysis;
+    using System.Runtime;
+
+    // DelegateArgument is the XAML-based construct. RuntimeDelegateArgument is a binding construct to store the value
+    [Fx.Tag.XamlVisible(false)]
+    public sealed class RuntimeDelegateArgument
+    {
+        public RuntimeDelegateArgument(string name, Type type, ArgumentDirection direction, DelegateArgument boundArgument)
+        {
+            if (string.IsNullOrEmpty(name))
+            {
+                throw FxTrace.Exception.ArgumentNullOrEmpty("name");
+            }
+
+            if (type == null)
+            {
+                throw FxTrace.Exception.ArgumentNull("type");
+            }
+
+            ArgumentDirectionHelper.Validate(direction, "direction");
+
+            if (boundArgument != null)
+            {
+                // Validations that the bound argument matches are done
+                // in CacheMetadata for ActivityDelegate.
+
+                boundArgument.Bind(this);
+            }
+
+            this.Name = name;
+            this.Type = type;
+            this.Direction = direction;
+            this.BoundArgument = boundArgument;
+        }
+
+        public string Name
+        {
+            get;
+            private set;
+        }
+
+        [SuppressMessage(FxCop.Category.Naming, FxCop.Rule.PropertyNamesShouldNotMatchGetMethods,
+            Justification = "Workflow normalizes on Type for Type properties")]
+        public Type Type
+        {
+            get;
+            private set;
+        }
+
+        public ArgumentDirection Direction
+        {
+            get;
+            private set;
+        }
+
+        public DelegateArgument BoundArgument
+        {
+            get;
+            private set;
+        }
+    }
+}