Get the yaml mapping node to preserve the order of the keys

YamlDotNet.sln

@@ -56,6 +56,12 @@ Global
 		{DF989FD9-3A2C-4807-A5D3-A8E755CA6648}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{DF989FD9-3A2C-4807-A5D3-A8E755CA6648}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{DF989FD9-3A2C-4807-A5D3-A8E755CA6648}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C0363835-93DB-4AF1-9E3C-0689C65D0FD7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C0363835-93DB-4AF1-9E3C-0689C65D0FD7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C0363835-93DB-4AF1-9E3C-0689C65D0FD7}.Debug-AOT|Any CPU.ActiveCfg = Debug|Any CPU
+		{C0363835-93DB-4AF1-9E3C-0689C65D0FD7}.Debug-AOT|Any CPU.Build.0 = Debug|Any CPU
+		{C0363835-93DB-4AF1-9E3C-0689C65D0FD7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C0363835-93DB-4AF1-9E3C-0689C65D0FD7}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

YamlDotNet/Helpers/OrderedYamlDictionary.cs

@@ -0,0 +1,188 @@
+//  This file is part of YamlDotNet - A .NET library for YAML.
+//  Copyright (c) Antoine Aubry and contributors
+
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of
+//  this software and associated documentation files (the "Software"), to deal in
+//  the Software without restriction, including without limitation the rights to
+//  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+//  of the Software, and to permit persons to whom the Software is furnished to do
+//  so, subject to the following conditions:
+
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using YamlDotNet.RepresentationModel;
+
+namespace YamlDotNet.Helpers
+{
+    [Serializable]
+    internal class OrderedYamlDictionary : IDictionary<YamlNode, YamlNode>
+    {
+        private readonly Dictionary<YamlNode,YamlNode> dic = new Dictionary<YamlNode, YamlNode>();
+
+        private readonly List<KeyValuePair<YamlNode, YamlNode>> valuePairs = new List<KeyValuePair<YamlNode, YamlNode>>();
+
+        public YamlNode this[YamlNode key]
+        {
+            get
+            {
+                return dic[key];
+            }
+            set
+            {
+                dic[key] = value;
+            }
+        }
+
+        public void Add(KeyValuePair<YamlNode, YamlNode> item)
+        {
+            dic.Add(item.Key, item.Value);
+            valuePairs.Add(item);
+        }
+
+        public void Add(YamlNode key, YamlNode value)
+        {
+            dic.Add(key, value);
+            valuePairs.Add(new KeyValuePair<YamlNode, YamlNode>(key,value));
+        }
+
+        public void Clear()
+        {
+            dic.Clear();
+            valuePairs.Clear();
+        }
+
+
+        public void CopyTo(KeyValuePair<YamlNode, YamlNode>[] array, int arrayIndex)
+        {
+            int modifier = 0;
+            foreach(KeyValuePair<YamlNode,YamlNode> obj in dic)
+            {
+                valuePairs[arrayIndex + modifier] = obj;
+                array.SetValue(new DictionaryEntry(obj.Key, obj.Value), arrayIndex + modifier);
+                modifier++;
+            }
+
+        }
+
+
+        public int Count
+        {
+            get
+            {
+                return dic.Count;
+            }
+        }
+
+        public bool IsReadOnly
+        {
+            get
+            {
+                return false;
+            }
+        }
+
+        public bool Contains(YamlNode key)
+        {
+            return dic.ContainsKey(key);
+        }
+
+        public bool ContainsKey(YamlNode key)
+        {
+            return dic.ContainsKey(key);
+        }
+
+        public bool Remove(YamlNode key)
+        {
+            dic.Remove(key);
+            valuePairs.RemoveAll(item => item.Key.Equals(key));
+            return true;
+        }
+
+        public bool TryGetValue(YamlNode key, out YamlNode value)
+        {
+            if(dic.ContainsKey(key))
+            {
+                value = dic[key];
+                return true;
+            }
+            value = default(YamlNode);
+            return false;
+        }
+
+        bool ICollection<KeyValuePair<YamlNode, YamlNode>>.Contains(KeyValuePair<YamlNode, YamlNode> item)
+        {
+            return dic.ContainsKey(item.Key) && dic.ContainsValue(item.Value);
+        }
+
+        bool ICollection<KeyValuePair<YamlNode, YamlNode>>.Remove(KeyValuePair<YamlNode, YamlNode> item)
+        {
+            if (dic.ContainsKey(item.Key))
+            {
+                dic.Remove(item.Key);
+                valuePairs.Remove(item);
+                return true;
+            }
+            return false;
+
+        }
+
+        public IEnumerator<KeyValuePair<YamlNode, YamlNode>> GetEnumerator()
+        {
+            foreach (KeyValuePair<YamlNode,YamlNode> entry in dic)
+            {
+                yield return new KeyValuePair<YamlNode, YamlNode>(entry.Key, entry.Value);
+            }
+
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return valuePairs.GetEnumerator();
+        }
+
+        ICollection<YamlNode> IDictionary<YamlNode,YamlNode>.Keys
+        {
+            get
+            {
+                List<YamlNode> keys = new List<YamlNode>();
+                foreach(YamlNode obj in dic.Keys)
+                {
+                    keys.Add(obj);
+                }
+                return keys;
+            }
+        }
+
+        ICollection<YamlNode> IDictionary<YamlNode, YamlNode>.Values
+        {
+            get
+            {
+                List<YamlNode> values = new List<YamlNode>();
+                foreach (YamlNode obj in dic.Values)
+                {
+                    values.Add(obj);
+                }
+                return values;
+            }
+        }
+
+
+        public OrderedYamlDictionary()
+        {
+
+        }
+
+
+    }
+}

YamlDotNet/RepresentationModel/YamlMappingNode.cs

@@ -27,6 +27,7 @@
 using YamlDotNet.Core.Events;
 using YamlDotNet.Helpers;
 using YamlDotNet.Serialization;
+using YamlDotNet.Helpers;
 using static YamlDotNet.Core.HashCode;
 
 namespace YamlDotNet.RepresentationModel

YamlDotNet/YamlDotNet.csproj

@@ -19,6 +19,8 @@
     <Nullable>enable</Nullable>
 
     <NetStandard>false</NetStandard>
+
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(TargetFramework)' != 'netcoreapp3.1'">