Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Activities/System/Activities/Statements/PickBranch.cs

@@ -0,0 +1,67 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace System.Activities.Statements
+{
+    using System.Collections.ObjectModel;
+    using System.ComponentModel;
+    using System.Runtime.Collections;
+    using System.Windows.Markup;
+
+    [ContentProperty("Action")]
+    public sealed class PickBranch
+    {
+        Collection<Variable> variables;
+        string displayName;
+
+        public PickBranch()
+        {
+            displayName = "PickBranch";
+        }
+
+        public Collection<Variable> Variables
+        {
+            get
+            {
+                if (this.variables == null)
+                {
+                    this.variables = new ValidatingCollection<Variable>
+                    {
+                        // disallow null values
+                        OnAddValidationCallback = item =>
+                        {
+                            if (item == null)
+                            {
+                                throw FxTrace.Exception.ArgumentNull("item");
+                            }
+                        }
+                    };
+                }
+                return this.variables;
+            }
+        }
+
+        [DefaultValue(null)]
+        [DependsOn("Variables")]
+        public Activity Trigger { get; set; }
+
+        [DefaultValue(null)]
+        [DependsOn("Trigger")]
+        public Activity Action { get; set; }
+
+        // 
+        [DefaultValue("PickBranch")]
+        public string DisplayName
+        {
+            get
+            {
+                return this.displayName;
+            }
+            set
+            {
+                this.displayName = value;
+            }
+        }
+    }
+}