Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

external/referencesource/System.Configuration/System/Configuration/ProviderBase.cs

@@ -0,0 +1,37 @@
+//------------------------------------------------------------------------------
+// <copyright file="ProviderBase.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration.Provider {
+    using  System.Collections.Specialized;
+    using  System.Runtime.Serialization;
+
+    public abstract class ProviderBase {
+
+        private string _name;
+        private string _Description;
+
+        public virtual string Name          { get { return _name; } }
+        public virtual string Description { get { return string.IsNullOrEmpty(_Description) ? Name : _Description; } }
+
+        public virtual void Initialize(string name, NameValueCollection config) {
+            lock (this) {
+                if (_Initialized)
+                    throw new InvalidOperationException(SR.GetString(SR.Provider_Already_Initialized));
+                _Initialized = true;
+            }
+            if (name == null)
+                throw new ArgumentNullException("name");
+            if (name.Length == 0)
+                throw new ArgumentException(SR.GetString(SR.Config_provider_name_null_or_empty), "name");
+            _name = name;
+            if (config != null) {
+                _Description = config["description"];
+                config.Remove("description");
+            }
+        }
+        private bool _Initialized;
+    }
+}