Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/WebParts/WebPartZoneCollection.cs

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+//------------------------------------------------------------------------------
+// <copyright file="WebPartZoneCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+namespace System.Web.UI.WebControls.WebParts {
+
+    using System;
+    using System.Collections;
+    using System.Globalization;
+
+    /// <devdoc>
+    /// Read-only collection of WebPartZones.  Collection cannot be modified after contstruction.
+    /// </devdoc>
+    public sealed class WebPartZoneCollection : ReadOnlyCollectionBase {
+
+        public WebPartZoneCollection() {
+        }
+
+        public WebPartZoneCollection(ICollection webPartZones) {
+            if (webPartZones == null) {
+                throw new ArgumentNullException("webPartZones");
+            }
+
+            foreach (object obj in webPartZones) {
+                if (obj == null) {
+                    throw new ArgumentException(SR.GetString(SR.Collection_CantAddNull), "webPartZones");
+                }
+                if (!(obj is WebPartZone)) {
+                    throw new ArgumentException(SR.GetString(SR.Collection_InvalidType, "WebPartZone"), "webPartZones");
+                }
+                InnerList.Add(obj);
+            }
+        }
+
+        internal int Add(WebPartZoneBase value) {
+            return InnerList.Add(value);
+        }
+
+        public bool Contains(WebPartZoneBase value) {
+            return InnerList.Contains(value);
+        }
+
+        public int IndexOf(WebPartZoneBase value) {
+            return InnerList.IndexOf(value);
+        }
+
+        public WebPartZoneBase this[int index] {
+            get {
+                return (WebPartZoneBase) InnerList[index];
+            }
+        }
+
+        public WebPartZoneBase this[string id] {
+            get {
+                WebPartZoneBase selectedZone = null;
+
+                foreach (WebPartZoneBase zone in InnerList) {
+                    if (String.Equals(zone.ID, id, StringComparison.OrdinalIgnoreCase)) {
+                        selectedZone = zone;
+                        break;
+                    }
+                }
+
+                return selectedZone;
+            }
+        }
+
+        /// <devdoc>
+        /// <para>Copies contents from the collection to a specified array with a
+        /// specified starting index.</para>
+        /// </devdoc>
+        public void CopyTo(WebPartZoneBase[] array, int index) {
+            InnerList.CopyTo(array, index);
+        }
+
+    }
+}