Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,116 @@
+//------------------------------------------------------------------------------
+// <copyright file="ProviderCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration.Provider {
+    using  System.Collections;
+    using  System.Collections.Specialized;
+    using  System.Runtime.Serialization;
+
+    /// <devdoc>
+    ///    <para>[To be supplied.]</para>
+    /// </devdoc>
+
+    public class ProviderCollection : IEnumerable, ICollection //, ICloneable
+    {
+        private Hashtable _Hashtable   = null;
+        private bool      _ReadOnly = false;
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        public ProviderCollection()
+        {
+            _Hashtable = new Hashtable(10, StringComparer.OrdinalIgnoreCase);
+        }
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        public virtual void Add(ProviderBase provider)
+        {
+            if (_ReadOnly)
+                throw new NotSupportedException(SR.GetString(SR.CollectionReadOnly));
+
+            if (provider == null)
+                throw new ArgumentNullException("provider");
+
+            if (provider.Name == null || provider.Name.Length < 1)
+                throw new ArgumentException(SR.GetString(SR.Config_provider_name_null_or_empty));
+
+            _Hashtable.Add(provider.Name, provider);
+        }
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        public void Remove(string name)
+        {
+            if (_ReadOnly)
+                throw new NotSupportedException(SR.GetString(SR.CollectionReadOnly));
+            _Hashtable.Remove(name);
+        }
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        public ProviderBase this[string name]
+        {
+            get {
+                return _Hashtable[name] as ProviderBase;
+            }
+        }
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        public IEnumerator GetEnumerator()
+        {
+            return _Hashtable.Values.GetEnumerator();
+        }
+        //public object Clone(){
+        //    return new ProviderCollection(_Indices, _Values);
+        //}
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        public void SetReadOnly()
+        {
+            if (_ReadOnly)
+                return;
+            _ReadOnly = true;
+        }
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        public void Clear()
+        {
+            if (_ReadOnly)
+                throw new NotSupportedException(SR.GetString(SR.CollectionReadOnly));
+            _Hashtable.Clear();
+        }
+
+        ////////////////////////////////////////////////////////////
+        ////////////////////////////////////////////////////////////
+        // ICollection interface
+        public int      Count           { get { return _Hashtable.Count; }}
+        public bool     IsSynchronized  { get { return false; } }
+        public object   SyncRoot        { get { return this; } }
+
+        public void     CopyTo(ProviderBase[] array, int index)
+        {
+            ((ICollection) this).CopyTo(array, index);
+        }
+
+        void ICollection.CopyTo(Array array, int index)
+        {
+            _Hashtable.Values.CopyTo(array, index);
+        }
+
+#if UNUSED_CODE
+        /////////////////////////////////////////////////////////////////////////////
+        /////////////////////////////////////////////////////////////////////////////
+        private ProviderCollection(Hashtable h)
+        {
+            _Hashtable = (Hashtable)h.Clone();
+        }
+#endif
+    }
+}