Use nameof operator

src/Microsoft.AspNet.Http.Abstractions/Extensions/MapExtensions.cs

@@ -22,7 +22,7 @@ namespace Microsoft.AspNet.Builder
         {
             if (pathMatch.HasValue && pathMatch.Value.EndsWith("/", StringComparison.Ordinal))
             {
-                throw new ArgumentException("The path must not end with a '/'", "pathMatch");
+                throw new ArgumentException("The path must not end with a '/'", nameof(pathMatch));
             }
 
             // create branch

src/Microsoft.AspNet.Http.Abstractions/FragmentString.cs

@@ -27,7 +27,7 @@ namespace Microsoft.AspNet.Http
         {
             if (!string.IsNullOrEmpty(value) && value[0] != '#')
             {
-                throw new ArgumentException("The leading '#' must be included for a non-empty fragment.", "value");
+                throw new ArgumentException("The leading '#' must be included for a non-empty fragment.", nameof(value));
             }
             _value = value;
         }

src/Microsoft.AspNet.Http.Abstractions/PathString.cs

@@ -29,7 +29,7 @@ namespace Microsoft.AspNet.Http
         {
             if (!String.IsNullOrEmpty(value) && value[0] != '/')
             {
-                throw new ArgumentException(""/*Resources.Exception_PathMustStartWithSlash*/, "value");
+                throw new ArgumentException(""/*Resources.Exception_PathMustStartWithSlash*/, nameof(value));
             }
             _value = value;
         }

src/Microsoft.AspNet.Http.Abstractions/QueryString.cs

@@ -30,7 +30,7 @@ namespace Microsoft.AspNet.Http
         {
             if (!string.IsNullOrEmpty(value) && value[0] != '?')
             {
-                throw new ArgumentException("The leading '?' must be included for a non-empty query.", "value");
+                throw new ArgumentException("The leading '?' must be included for a non-empty query.", nameof(value));
             }
             _value = value;
         }

src/Microsoft.AspNet.Http/ReferenceReadStream.cs

@@ -57,7 +57,7 @@ namespace Microsoft.AspNet.Http.Internal
                 ThrowIfDisposed();
                 if (value < 0 || value > Length)
                 {
-                    throw new ArgumentOutOfRangeException("value", value, "The Position must be within the length of the Stream: " + Length);
+                    throw new ArgumentOutOfRangeException(nameof(value), value, "The Position must be within the length of the Stream: " + Length);
                 }
                 VerifyPosition();
                 _position = value;

src/Microsoft.AspNet.Owin/OwinEnvironment.cs

@@ -37,11 +37,11 @@ namespace Microsoft.AspNet.Owin
         {
             if (context.GetFeature<IHttpRequestFeature>() == null)
             {
-                throw new ArgumentException("Missing required feature: " + nameof(IHttpRequestFeature) + ".", "context");
+                throw new ArgumentException("Missing required feature: " + nameof(IHttpRequestFeature) + ".", nameof(context));
             }
             if (context.GetFeature<IHttpResponseFeature>() == null)
             {
-                throw new ArgumentException("Missing required feature: " + nameof(IHttpResponseFeature) + ".", "context");
+                throw new ArgumentException("Missing required feature: " + nameof(IHttpResponseFeature) + ".", nameof(context));
             }
 
             _context = context;

src/Microsoft.AspNet.Owin/OwinFeatureCollection.cs

@@ -411,7 +411,7 @@ namespace Microsoft.AspNet.Owin
         {
             if (arrayIndex < 0 || arrayIndex > array.Length)
             {
-                throw new ArgumentOutOfRangeException("arrayIndex", arrayIndex, string.Empty);
+                throw new ArgumentOutOfRangeException(nameof(arrayIndex), arrayIndex, string.Empty);
             }
             var keys = Keys;
             if (keys.Count > array.Length - arrayIndex)

src/Microsoft.AspNet.Owin/WebSockets/OwinWebSocketAdapter.cs

@@ -169,7 +169,7 @@ namespace Microsoft.AspNet.Owin
                 case 0x8:
                     return WebSocketMessageType.Close;
                 default:
-                    throw new ArgumentOutOfRangeException("messageType", messageType, string.Empty);
+                    throw new ArgumentOutOfRangeException(nameof(messageType), messageType, string.Empty);
             }
         }
 
@@ -184,7 +184,7 @@ namespace Microsoft.AspNet.Owin
                 case WebSocketMessageType.Close:
                     return 0x8;
                 default:
-                    throw new ArgumentOutOfRangeException("webSocketMessageType", webSocketMessageType, string.Empty);
+                    throw new ArgumentOutOfRangeException(nameof(webSocketMessageType), webSocketMessageType, string.Empty);
             }
         }
     }

src/Microsoft.AspNet.WebUtilities/BufferedReadStream.cs

@@ -64,7 +64,7 @@ namespace Microsoft.AspNet.WebUtilities
             {
                 if (value < 0)
                 {
-                    throw new ArgumentOutOfRangeException("value", value, "Position must be positive.");
+                    throw new ArgumentOutOfRangeException(nameof(value), value, "Position must be positive.");
                 }
                 if (value == Position)
                 {

src/Microsoft.AspNet.WebUtilities/MultipartReaderStream.cs

@@ -70,11 +70,11 @@ namespace Microsoft.AspNet.WebUtilities
             {
                 if (value < 0)
                 {
-                    throw new ArgumentOutOfRangeException("value", value, "The Position must be positive.");
+                    throw new ArgumentOutOfRangeException(nameof(value), value, "The Position must be positive.");
                 }
                 if (value > _observedLength)
                 {
-                    throw new ArgumentOutOfRangeException("value", value, "The Position must be less than length.");
+                    throw new ArgumentOutOfRangeException(nameof(value), value, "The Position must be less than length.");
                 }
                 _position = value;
                 if (_position < _observedLength)

src/Microsoft.AspNet.WebUtilities/WebEncoders.cs

@@ -175,11 +175,11 @@ namespace Microsoft.AspNet.WebUtilities
         {
             if (offset < 0)
             {
-                throw new ArgumentOutOfRangeException("offset");
+                throw new ArgumentOutOfRangeException(nameof(offset));
             }
             if (count < 0)
             {
-                throw new ArgumentOutOfRangeException("count");
+                throw new ArgumentOutOfRangeException(nameof(count));
             }
             if (bufferLength - offset < count)
             {

src/Microsoft.Net.Http.Headers/ContentDispositionHeaderValue.cs

@@ -127,7 +127,7 @@ namespace Microsoft.Net.Http.Headers
                 }
                 else if (value < 0)
                 {
-                    throw new ArgumentOutOfRangeException("value");
+                    throw new ArgumentOutOfRangeException(nameof(value));
                 }
                 else if (sizeParameter != null)
                 {
@@ -656,7 +656,7 @@ namespace Microsoft.Net.Http.Headers
         {
             if ((index < 0) || (index >= pattern.Length))
             {
-                throw new ArgumentOutOfRangeException("index");
+                throw new ArgumentOutOfRangeException(nameof(index));
             }
             if ((pattern[index] == '%')
                 && (pattern.Length - index >= 3))

src/Microsoft.Net.Http.Headers/ContentRangeHeaderValue.cs

@@ -29,15 +29,15 @@ namespace Microsoft.Net.Http.Headers
 
             if (length < 0)
             {
-                throw new ArgumentOutOfRangeException("length");
+                throw new ArgumentOutOfRangeException(nameof(length));
             }
             if ((to < 0) || (to > length))
             {
-                throw new ArgumentOutOfRangeException("to");
+                throw new ArgumentOutOfRangeException(nameof(to));
             }
             if ((from < 0) || (from > to))
             {
-                throw new ArgumentOutOfRangeException("from");
+                throw new ArgumentOutOfRangeException(nameof(from));
             }
 
             _from = from;
@@ -52,7 +52,7 @@ namespace Microsoft.Net.Http.Headers
 
             if (length < 0)
             {
-                throw new ArgumentOutOfRangeException("length");
+                throw new ArgumentOutOfRangeException(nameof(length));
             }
 
             _length = length;
@@ -65,11 +65,11 @@ namespace Microsoft.Net.Http.Headers
 
             if (to < 0)
             {
-                throw new ArgumentOutOfRangeException("to");
+                throw new ArgumentOutOfRangeException(nameof(to));
             }
             if ((from < 0) || (from > to))
             {
-                throw new ArgumentOutOfRangeException("from");
+                throw new ArgumentOutOfRangeException(nameof(@from));
             }
 
             _from = from;

src/Microsoft.Net.Http.Headers/EntityTagHeaderValue.cs

@@ -39,7 +39,7 @@ namespace Microsoft.Net.Http.Headers
         {
             if (string.IsNullOrEmpty(tag))
             {
-                throw new ArgumentException("An empty string is not allowed.", "tag");
+                throw new ArgumentException("An empty string is not allowed.", nameof(tag));
             }
 
             int length = 0;

src/Microsoft.Net.Http.Headers/HeaderUtilities.cs

@@ -27,7 +27,7 @@ namespace Microsoft.Net.Http.Headers
                 // value.
                 if ((value < 0) || (value > 1))
                 {
-                    throw new ArgumentOutOfRangeException("value");
+                    throw new ArgumentOutOfRangeException(nameof(value));
                 }
 
                 var qualityString = ((double)value).ToString("0.0##", NumberFormatInfo.InvariantInfo);

src/Microsoft.Net.Http.Headers/ObjectCollection.cs

@@ -49,7 +49,7 @@ namespace Microsoft.Net.Http.Headers
             // null values cannot be added to the collection.
             if (item == null)
             {
-                throw new ArgumentNullException("item");
+                throw new ArgumentNullException(nameof(item));
             }
         }
     }

src/Microsoft.Net.Http.Headers/RangeConditionHeaderValue.cs

@@ -28,7 +28,7 @@ namespace Microsoft.Net.Http.Headers
         {
             if (entityTag == null)
             {
-                throw new ArgumentNullException("entityTag");
+                throw new ArgumentNullException(nameof(entityTag));
             }
 
             _entityTag = entityTag;

src/Microsoft.Net.Http.Headers/RangeItemHeaderValue.cs

@@ -21,15 +21,15 @@ namespace Microsoft.Net.Http.Headers
             }
             if (from.HasValue && (from.Value < 0))
             {
-                throw new ArgumentOutOfRangeException("from");
+                throw new ArgumentOutOfRangeException(nameof(from));
             }
             if (to.HasValue && (to.Value < 0))
             {
-                throw new ArgumentOutOfRangeException("to");
+                throw new ArgumentOutOfRangeException(nameof(to));
             }
             if (from.HasValue && to.HasValue && (from.Value > to.Value))
             {
-                throw new ArgumentOutOfRangeException("from");
+                throw new ArgumentOutOfRangeException(nameof(from));
             }
 
             _from = from;

src/Microsoft.Net.Http.Headers/StringWithQualityHeaderValue.cs

@@ -36,7 +36,7 @@ namespace Microsoft.Net.Http.Headers
 
             if ((quality < 0) || (quality > 1))
             {
-                throw new ArgumentOutOfRangeException("quality");
+                throw new ArgumentOutOfRangeException(nameof(quality));
             }
 
             _value = value;