键值对不区分大小写保存

performance/Performance.Infrastructure/Extensions/Extensions.Dictionary.cs

@@ -54,7 +54,7 @@ public static void AddOrUpdate(this Dictionary<string, object> keyValues, string
             if (default(KeyValuePair<string, object>).Equals(pair))
                 keyValues.Add(key, value);
             else
-                keyValues[key] = value;
+                keyValues[pair.Key] = value;
         }
 
         /// <summary>