Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Configuration/System/Configuration/ConnectionStringsSection.cs

@@ -0,0 +1,49 @@
+//------------------------------------------------------------------------------
+// <copyright file="ConnectionStringsSection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration {
+    using System;
+    using System.Xml;
+    using System.Configuration;
+    using System.Collections.Specialized;
+    using System.Collections;
+    using System.IO;
+    using System.Text;
+
+    public sealed class ConnectionStringsSection : ConfigurationSection {
+        private static ConfigurationPropertyCollection _properties;
+        private static readonly ConfigurationProperty _propConnectionStrings =
+            new ConfigurationProperty(null, typeof(ConnectionStringSettingsCollection), null, 
+                                      ConfigurationPropertyOptions.IsDefaultCollection);
+
+        static ConnectionStringsSection() {
+            // Property initialization
+            _properties = new ConfigurationPropertyCollection();
+            _properties.Add(_propConnectionStrings);
+        }
+
+        public ConnectionStringsSection() {
+        }
+
+        protected internal override object GetRuntimeObject() {
+            SetReadOnly();
+            return this;            // return the read only object
+        }
+
+        protected internal override ConfigurationPropertyCollection Properties {
+            get {
+                return _properties;
+            }
+        }
+
+        [ConfigurationProperty("", Options = ConfigurationPropertyOptions.IsDefaultCollection)]
+        public ConnectionStringSettingsCollection ConnectionStrings {
+            get {
+                return (ConnectionStringSettingsCollection)base[_propConnectionStrings];
+            }
+        }
+    }
+}