diff --git a/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetRequestTrailersLayoutRenderer.cs b/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetRequestTrailersLayoutRenderer.cs
index 7a5de3e1..624f4c86 100644
--- a/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetRequestTrailersLayoutRenderer.cs
+++ b/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetRequestTrailersLayoutRenderer.cs
@@ -1,12 +1,13 @@
 #if ASP_NET_CORE3
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Http.Features;
-using NLog.LayoutRenderers;
-using NLog.Web.Internal;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Features;
+using NLog.Config;
+using NLog.LayoutRenderers;
+using NLog.Web.Internal;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -30,7 +31,14 @@ public class AspNetRequestTrailersLayoutRenderer : AspNetLayoutMultiValueRendere
         /// Trailer names to be rendered.
         /// If <c>null</c> or empty array, all trailers will be rendered.
         /// </summary>
-        public List<string> TrailerNames { get; set; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
+
+        /// <summary>
+        /// Trailer names to be rendered.
+        /// If <c>null</c> or empty array, all trailers will be rendered.
+        /// </summary>
+        public List<string> TrailerNames { get => Items; set => Items = value; }
 
         /// <summary>
         /// Gets or sets the keys to exclude from the output. If omitted, none are excluded.
@@ -61,7 +69,7 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
             var trailers = httpRequestTrailers.Trailers;
             if (trailers?.Count > 0)
             {
-                bool checkForExclude = (TrailerNames == null || TrailerNames.Count == 0) && Exclude?.Count > 0;
+                bool checkForExclude = (Items == null || Items.Count == 0) && Exclude?.Count > 0;
                 var headerValues = GetTrailerValues(trailers, checkForExclude);
                 SerializePairs(headerValues, builder, logEvent);
             }
@@ -69,7 +77,7 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
 
         private IEnumerable<KeyValuePair<string, string>> GetTrailerValues(IHeaderDictionary trailers, bool checkForExclude)
         {
-            var trailerNames = TrailerNames?.Count > 0 ? TrailerNames : trailers.Keys;
+            var trailerNames = Items?.Count > 0 ? Items : trailers.Keys;
             foreach (var trailerName in trailerNames)
             {
                 if (checkForExclude && Exclude.Contains(trailerName))
diff --git a/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetResponseTrailersLayoutRenderer.cs b/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetResponseTrailersLayoutRenderer.cs
index fa8780bb..01a8b9f4 100644
--- a/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetResponseTrailersLayoutRenderer.cs
+++ b/src/NLog.Web.AspNetCore/LayoutRenderers/AspNetResponseTrailersLayoutRenderer.cs
@@ -1,11 +1,12 @@
 #if ASP_NET_CORE3
+using System;
+using System.Collections.Generic;
+using System.Text;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.Features;
+using NLog.Config;
 using NLog.LayoutRenderers;
 using NLog.Web.Internal;
-using System;
-using System.Collections.Generic;
-using System.Text;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -29,7 +30,14 @@ public class AspNetResponseTrailersLayoutRenderer : AspNetLayoutMultiValueRender
         /// Trailer names to be rendered.
         /// If <c>null</c> or empty array, all trailers will be rendered.
         /// </summary>
-        public List<string> TrailerNames { get; set; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
+
+        /// <summary>
+        /// Trailer names to be rendered.
+        /// If <c>null</c> or empty array, all trailers will be rendered.
+        /// </summary>
+        public List<string> TrailerNames { get => Items; set => Items = value; }
 
         /// <summary>
         /// Gets or sets the keys to exclude from the output. If omitted, none are excluded.
@@ -54,7 +62,7 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
             var trailers = httpResponseTrailers.Trailers;
             if (trailers?.Count > 0)
             {
-                bool checkForExclude = (TrailerNames == null || TrailerNames.Count == 0) && Exclude?.Count > 0;
+                bool checkForExclude = (Items == null || Items.Count == 0) && Exclude?.Count > 0;
                 var headerValues = GetTrailerValues(trailers, checkForExclude);
                 SerializePairs(headerValues, builder, logEvent);
             }
@@ -62,7 +70,7 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
 
         private IEnumerable<KeyValuePair<string, string>> GetTrailerValues(IHeaderDictionary trailers, bool checkForExclude)
         {
-            var trailerNames = TrailerNames?.Count > 0 ? TrailerNames : trailers.Keys;
+            var trailerNames = Items?.Count > 0 ? Items : trailers.Keys;
             foreach (var trailerName in trailerNames)
             {
                 if (checkForExclude && Exclude.Contains(trailerName))
diff --git a/src/Shared/LayoutRenderers/AspNetRequestCookieLayoutRenderer.cs b/src/Shared/LayoutRenderers/AspNetRequestCookieLayoutRenderer.cs
index 1f7fef6f..bd836056 100644
--- a/src/Shared/LayoutRenderers/AspNetRequestCookieLayoutRenderer.cs
+++ b/src/Shared/LayoutRenderers/AspNetRequestCookieLayoutRenderer.cs
@@ -2,14 +2,15 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using NLog.LayoutRenderers;
-using NLog.Web.Internal;
 #if !ASP_NET_CORE
-using NLog.Web.Enums;
 using System.Web;
+using NLog.Web.Enums;
 #else
 using Microsoft.AspNetCore.Http;
 #endif
+using NLog.Config;
+using NLog.LayoutRenderers;
+using NLog.Web.Internal;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -33,7 +34,14 @@ public class AspNetRequestCookieLayoutRenderer : AspNetLayoutMultiValueRendererB
         /// Cookie names to be rendered.
         /// If <c>null</c> or empty array, all cookies will be rendered.
         /// </summary>
-        public List<string> CookieNames { get; set; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
+
+        /// <summary>
+        /// Cookie names to be rendered.
+        /// If <c>null</c> or empty array, all cookies will be rendered.
+        /// </summary>
+        public List<string> CookieNames { get => Items; set => Items = value; }
 
         /// <summary>
         /// Gets or sets the keys to exclude from the output. If omitted, none are excluded.
@@ -79,9 +87,9 @@ private IEnumerable<KeyValuePair<string, string>> GetCookieValues(HttpCookieColl
 #else
         private IEnumerable<KeyValuePair<string, string>> GetCookieValues(IRequestCookieCollection cookies)
         {
-            if (CookieNames?.Count > 0)
+            if (Items?.Count > 0)
             {
-                foreach (var cookieName in CookieNames)
+                foreach (var cookieName in Items)
                 {
                     if (cookies.TryGetValue(cookieName, out var cookieValue))
                     {
diff --git a/src/Shared/LayoutRenderers/AspNetRequestHeadersLayoutRenderer.cs b/src/Shared/LayoutRenderers/AspNetRequestHeadersLayoutRenderer.cs
index b7d4e38c..5d9c30d6 100644
--- a/src/Shared/LayoutRenderers/AspNetRequestHeadersLayoutRenderer.cs
+++ b/src/Shared/LayoutRenderers/AspNetRequestHeadersLayoutRenderer.cs
@@ -2,13 +2,14 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using NLog.LayoutRenderers;
-using NLog.Web.Internal;
 #if !ASP_NET_CORE
 using System.Collections.Specialized;
 #else
 using Microsoft.AspNetCore.Http;
 #endif
+using NLog.Config;
+using NLog.LayoutRenderers;
+using NLog.Web.Internal;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -32,7 +33,14 @@ public class AspNetRequestHeadersLayoutRenderer : AspNetLayoutMultiValueRenderer
         /// Header names to be rendered.
         /// If <c>null</c> or empty array, all headers will be rendered.
         /// </summary>
-        public List<string> HeaderNames { get; set; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
+
+        /// <summary>
+        /// Header names to be rendered.
+        /// If <c>null</c> or empty array, all headers will be rendered.
+        /// </summary>
+        public List<string> HeaderNames { get => Items; set => Items = value; }
 
         /// <summary>
         /// Gets or sets the keys to exclude from the output. If omitted, none are excluded.
@@ -64,7 +72,7 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
             var headers = httpRequest.Headers;
             if (headers?.Count > 0)
             {
-                bool checkForExclude = (HeaderNames == null || HeaderNames.Count == 0) && Exclude?.Count > 0;
+                bool checkForExclude = (Items == null || Items.Count == 0) && Exclude?.Count > 0;
                 var headerValues = GetHeaderValues(headers, checkForExclude);
                 SerializePairs(headerValues, builder, logEvent);
             }
@@ -73,7 +81,7 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
 #if !ASP_NET_CORE
         private IEnumerable<KeyValuePair<string, string>> GetHeaderValues(NameValueCollection headers, bool checkForExclude)
         {
-            var headerNames = HeaderNames?.Count > 0 ? HeaderNames : headers.Keys.Cast<string>();
+            var headerNames = Items?.Count > 0 ? Items : headers.Keys.Cast<string>();
             foreach (var headerName in headerNames)
             {
                 if (checkForExclude && Exclude.Contains(headerName))
@@ -91,7 +99,7 @@ private IEnumerable<KeyValuePair<string, string>> GetHeaderValues(NameValueColle
 #else
         private IEnumerable<KeyValuePair<string, string>> GetHeaderValues(IHeaderDictionary headers, bool checkForExclude)
         {
-            var headerNames = HeaderNames?.Count > 0 ? HeaderNames : headers.Keys;
+            var headerNames = Items?.Count > 0 ? Items : headers.Keys;
             foreach (var headerName in headerNames)
             {
                 if (checkForExclude && Exclude.Contains(headerName))
diff --git a/src/Shared/LayoutRenderers/AspNetRequestQueryStringLayoutRenderer.cs b/src/Shared/LayoutRenderers/AspNetRequestQueryStringLayoutRenderer.cs
index 8c9bca3b..12bb09e0 100644
--- a/src/Shared/LayoutRenderers/AspNetRequestQueryStringLayoutRenderer.cs
+++ b/src/Shared/LayoutRenderers/AspNetRequestQueryStringLayoutRenderer.cs
@@ -1,13 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
-using NLog.LayoutRenderers;
-using NLog.Web.Internal;
 #if !ASP_NET_CORE
 using System.Collections.Specialized;
 #else
 using Microsoft.AspNetCore.Http;
 #endif
+using NLog.Config;
+using NLog.LayoutRenderers;
+using NLog.Web.Internal;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -29,7 +30,14 @@ public class AspNetQueryStringLayoutRenderer : AspNetLayoutMultiValueRendererBas
         /// List Query Strings' Key to be rendered from Request.
         /// If empty, then render all querystrings
         /// </summary>
-        public List<string> QueryStringKeys { get; set; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
+
+        /// <summary>
+        /// List Query Strings' Key to be rendered from Request.
+        /// If empty, then render all querystrings
+        /// </summary>
+        public List<string> QueryStringKeys { get => Items; set => Items = value; }
 
         /// <inheritdoc/>
         protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
@@ -48,7 +56,7 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
             if (queryStrings == null || queryStrings.Count == 0)
                 return;
 
-            var queryStringKeys = QueryStringKeys;
+            var queryStringKeys = Items;
             var printAllQueryString = queryStringKeys == null || queryStringKeys.Count == 0;
             if (printAllQueryString)
             {
diff --git a/src/Shared/LayoutRenderers/AspNetRequestRouteParametersRenderer.cs b/src/Shared/LayoutRenderers/AspNetRequestRouteParametersRenderer.cs
index bedf09c1..95d7e20e 100644
--- a/src/Shared/LayoutRenderers/AspNetRequestRouteParametersRenderer.cs
+++ b/src/Shared/LayoutRenderers/AspNetRequestRouteParametersRenderer.cs
@@ -7,6 +7,7 @@
 using Microsoft.AspNetCore.Routing;
 using HttpContextBase = Microsoft.AspNetCore.Http.HttpContext;
 #endif
+using NLog.Config;
 using NLog.LayoutRenderers;
 
 namespace NLog.Web.LayoutRenderers
@@ -29,13 +30,14 @@ public class AspNetRequestRouteParametersRenderer : AspNetLayoutMultiValueRender
         /// List Route Parameter' Key to be rendered from Request.
         /// If empty, then render all parameters
         /// </summary>
-        public List<string> RouteParameterKeys { get => Items; set => Items = value; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
 
         /// <summary>
         /// List Route Parameter' Key to be rendered from Request.
         /// If empty, then render all parameters
         /// </summary>
-        public List<string> Items { get; set; }
+        public List<string> RouteParameterKeys { get => Items; set => Items = value; }
 
         /// <inheritdoc/>
         protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
diff --git a/src/Shared/LayoutRenderers/AspNetResponseCookieLayoutRenderer.cs b/src/Shared/LayoutRenderers/AspNetResponseCookieLayoutRenderer.cs
index ef755557..64b9bf08 100644
--- a/src/Shared/LayoutRenderers/AspNetResponseCookieLayoutRenderer.cs
+++ b/src/Shared/LayoutRenderers/AspNetResponseCookieLayoutRenderer.cs
@@ -2,10 +2,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using NLog.LayoutRenderers;
-using NLog.Web.Enums;
-using NLog.Web.Internal;
-using NLog.Layouts;
 #if !ASP_NET_CORE
 using System.Web;
 #else
@@ -14,6 +10,12 @@
 using Microsoft.AspNetCore.Http;
 #endif
 
+using NLog.Config;
+using NLog.LayoutRenderers;
+using NLog.Layouts;
+using NLog.Web.Enums;
+using NLog.Web.Internal;
+
 namespace NLog.Web.LayoutRenderers
 {
     /// <summary>
@@ -43,7 +45,14 @@ public class AspNetResponseCookieLayoutRenderer : AspNetLayoutMultiValueRenderer
         /// Cookie names to be rendered.
         /// If <c>null</c> or empty array, all cookies will be rendered.
         /// </summary>
-        public List<string> CookieNames { get; set; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
+
+        /// <summary>
+        /// Cookie names to be rendered.
+        /// If <c>null</c> or empty array, all cookies will be rendered.
+        /// </summary>
+        public List<string> CookieNames { get => Items; set => Items = value; }
 
         /// <summary>
         /// Render all of the cookie properties, such as Daom and Path, not merely Name and Value
@@ -157,13 +166,13 @@ private HttpCookieCollection GetCookies(HttpResponseBase response)
         private IEnumerable<KeyValuePair<string, string>> GetCookieValues(HttpCookieCollection cookies)
         {
             var expandMultiValue = OutputFormat != AspNetRequestLayoutOutputFormat.Flat;
-            return HttpCookieCollectionValues.GetCookieValues(cookies, CookieNames, Exclude, expandMultiValue);
+            return HttpCookieCollectionValues.GetCookieValues(cookies, Items, Exclude, expandMultiValue);
         }
 
         private IEnumerable<HttpCookie> GetVerboseCookieValues(HttpCookieCollection cookies)
         {
             var expandMultiValue = OutputFormat != AspNetRequestLayoutOutputFormat.Flat;
-            return HttpCookieCollectionValues.GetVerboseCookieValues(cookies, CookieNames, Exclude, expandMultiValue);
+            return HttpCookieCollectionValues.GetVerboseCookieValues(cookies, Items, Exclude, expandMultiValue);
         }
 
         private void SerializeAllProperties(IEnumerable<HttpCookie> verboseCookieValues, StringBuilder builder, LogEventInfo logEvent)
@@ -274,9 +283,9 @@ private static IList<SetCookieHeaderValue> GetCookies(HttpResponse response)
 
         private IEnumerable<KeyValuePair<string, string>> GetCookieValues(IList<SetCookieHeaderValue> cookies)
         {
-            if (CookieNames?.Count > 0)
+            if (Items?.Count > 0)
             {
-                return GetCookieNameValues(cookies, CookieNames);
+                return GetCookieNameValues(cookies, Items);
             }
             else
             {
@@ -286,9 +295,9 @@ private IEnumerable<KeyValuePair<string, string>> GetCookieValues(IList<SetCooki
 
         private IEnumerable<SetCookieHeaderValue> GetVerboseCookieValues(IList<SetCookieHeaderValue> cookies)
         {
-            if (CookieNames?.Count > 0)
+            if (Items?.Count > 0)
             {
-                return GetCookieVerboseValues(cookies, CookieNames);
+                return GetCookieVerboseValues(cookies, Items);
             }
             else
             {
diff --git a/src/Shared/LayoutRenderers/AspNetResponseHeadersLayoutRenderer.cs b/src/Shared/LayoutRenderers/AspNetResponseHeadersLayoutRenderer.cs
index a2868f36..089f8c26 100644
--- a/src/Shared/LayoutRenderers/AspNetResponseHeadersLayoutRenderer.cs
+++ b/src/Shared/LayoutRenderers/AspNetResponseHeadersLayoutRenderer.cs
@@ -2,13 +2,14 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using NLog.LayoutRenderers;
-using NLog.Web.Internal;
 #if !ASP_NET_CORE
 using System.Collections.Specialized;
 #else
 using Microsoft.AspNetCore.Http;
 #endif
+using NLog.Config;
+using NLog.LayoutRenderers;
+using NLog.Web.Internal;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -32,7 +33,14 @@ public class AspNetResponseHeadersLayoutRenderer : AspNetLayoutMultiValueRendere
         /// Header names to be rendered.
         /// If <c>null</c> or empty array, all headers will be rendered.
         /// </summary>
-        public List<string> HeaderNames { get; set; }
+        [DefaultParameter]
+        public List<string> Items { get; set; }
+
+        /// <summary>
+        /// Header names to be rendered.
+        /// If <c>null</c> or empty array, all headers will be rendered.
+        /// </summary>
+        public List<string> HeaderNames { get => Items; set => Items = value; }
 
         /// <summary>
         /// Gets or sets the keys to exclude from the output. If omitted, none are excluded.
@@ -64,39 +72,39 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
             var headers = httpResponse.Headers;
             if (headers?.Count > 0)
             {
-                bool checkForExclude = (HeaderNames == null || HeaderNames.Count == 0) && Exclude?.Count > 0;
-                var headersDictionary = GetHeaders(headers);
-                var headerValues = GetHeaderValues(headersDictionary, checkForExclude);
+                bool checkForExclude = (Items == null || Items.Count == 0) && Exclude?.Count > 0;
+                var headerValues = GetHeaderValues(headers, checkForExclude);
                 SerializePairs(headerValues, builder, logEvent);
             }
         }
 
-#if!ASP_NET_CORE
-        private static Dictionary<string, string> GetHeaders(NameValueCollection headers)
-        {
-            return headers.Keys.Cast<string>().ToDictionary(headerKey => headerKey, headerKey => headers[headerKey]);
-        }
-#else
-        private static Dictionary<string, string> GetHeaders(IHeaderDictionary headers)
-        {
-            return headers.Keys.ToDictionary<string, string, string>(headerKey => headerKey, headerKey => headers[headerKey]);
-        }
-#endif
-        private IEnumerable<KeyValuePair<string, string>> GetHeaderValues(Dictionary<string,string> headers, bool checkForExclude)
+#if !ASP_NET_CORE
+        private IEnumerable<KeyValuePair<string, string>> GetHeaderValues(NameValueCollection headers, bool checkForExclude)
         {
-            var headerNames = HeaderNames?.Count > 0 ? HeaderNames : headers.Keys.ToList();
+            var headerNames = Items?.Count > 0 ? Items : headers.Keys.Cast<string>();
             foreach (var headerName in headerNames)
             {
                 if (checkForExclude && Exclude.Contains(headerName))
-                {
                     continue;
-                }
 
-                if (!headers.ContainsKey(headerName))
+                var headerValue = headers[headerName];
+                if (headerValue == null)
                 {
                     continue;
                 }
 
+                yield return new KeyValuePair<string, string>(headerName, headerValue);
+            }
+        }
+#else
+        private IEnumerable<KeyValuePair<string, string>> GetHeaderValues(IHeaderDictionary headers, bool checkForExclude)
+        {
+            var headerNames = Items?.Count > 0 ? Items : headers.Keys;
+            foreach (var headerName in headerNames)
+            {
+                if (checkForExclude && Exclude.Contains(headerName))
+                    continue;
+
                 if (!headers.TryGetValue(headerName, out var headerValue))
                 {
                     continue;
@@ -105,5 +113,6 @@ private IEnumerable<KeyValuePair<string, string>> GetHeaderValues(Dictionary<str
                 yield return new KeyValuePair<string, string>(headerName, headerValue);
             }
         }
+#endif
     }
 }
\ No newline at end of file