Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,109 @@
+//------------------------------------------------------------------------------
+// <copyright file="ConfigurationSection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration {
+    using System;
+    using System.Collections.Specialized;
+    using System.Configuration.Internal;
+    using System.IO;
+    using System.Reflection;
+    using System.Security;
+    using System.Text;
+    using System.Xml;
+    using System.Globalization;
+    using System.Runtime.Versioning;
+
+    public abstract class ConfigurationSection : ConfigurationElement {
+
+        private SectionInformation _section;
+
+        // Constructor
+        //
+        protected ConfigurationSection() {
+            _section = new SectionInformation( this );
+        }
+
+        // SectionInformation property
+        //
+        // Retrieve the class associated with the Section information
+        //
+        public SectionInformation SectionInformation {
+            get {
+                return _section;
+            }
+        }
+
+        // GetRuntimeObject
+        //
+        // Return the Runtime Object for this Section
+        //
+        protected internal virtual object GetRuntimeObject() {
+            return this;
+        }
+
+
+        protected internal override bool IsModified() {
+            return ( SectionInformation.IsModifiedFlags() ||
+                     base.IsModified() );
+        }
+
+        protected internal override void ResetModified() {
+            SectionInformation.ResetModifiedFlags();
+            base.ResetModified();
+        }
+
+        protected internal virtual void DeserializeSection(XmlReader reader) {
+            if (!reader.Read() || reader.NodeType != XmlNodeType.Element) {
+                throw new ConfigurationErrorsException(SR.GetString(SR.Config_base_expected_to_find_element), reader);
+            }
+            DeserializeElement(reader, false);
+        }
+
+        protected internal virtual string SerializeSection(ConfigurationElement parentElement, string name, ConfigurationSaveMode saveMode) {
+            if (CurrentConfiguration != null &&
+                CurrentConfiguration.TargetFramework != null &&
+                !ShouldSerializeSectionInTargetVersion(CurrentConfiguration.TargetFramework))
+            {
+                return string.Empty;
+            }
+
+            ValidateElement(this, null, true);
+
+            ConfigurationElement TempElement = CreateElement(this.GetType());
+            TempElement.Unmerge(this, parentElement, saveMode);
+
+            StringWriter strWriter = new StringWriter(CultureInfo.InvariantCulture);
+            XmlTextWriter writer = new XmlTextWriter(strWriter);
+            writer.Formatting = Formatting.Indented;
+            writer.Indentation = 4;
+            writer.IndentChar = ' ';
+            TempElement.DataToWriteInternal = (saveMode != ConfigurationSaveMode.Minimal);
+
+            if (CurrentConfiguration != null && CurrentConfiguration.TargetFramework != null)
+                _configRecord.SectionsStack.Push(this);
+
+            TempElement.SerializeToXmlElement(writer, name);
+
+            if (CurrentConfiguration != null && CurrentConfiguration.TargetFramework != null)
+                _configRecord.SectionsStack.Pop();
+
+            writer.Flush();
+            return strWriter.ToString();
+        }
+
+        protected internal virtual bool ShouldSerializePropertyInTargetVersion(ConfigurationProperty property, string propertyName, FrameworkName targetFramework, ConfigurationElement parentConfigurationElement) {
+            return true;
+        }
+
+        protected internal virtual bool ShouldSerializeElementInTargetVersion(ConfigurationElement element, string elementName, FrameworkName targetFramework) {
+            return true;
+        }
+
+        protected internal virtual bool ShouldSerializeSectionInTargetVersion(FrameworkName targetFramework) {
+            return true;
+        }
+    }
+}