From a6389dcbe74865fc6022a9c1cdb51116fb72fea8 Mon Sep 17 00:00:00 2001
From: Lee <lee@cedita.com>
Date: Mon, 8 Jan 2018 09:58:52 +0000
Subject: [PATCH] Support querying a single 24h price change pair, or returning
 all price changes

---
 .../Interfaces/IBinanceClient.cs                | 10 ++++++++--
 Binance.API.Csharp.Client.Test/BinanceTest.cs   | 10 ++++++++--
 Binance.API.Csharp.Client/BinanceClient.cs      | 17 +++++++++++++----
 3 files changed, 29 insertions(+), 8 deletions(-)

diff --git a/Binance.API.Csharp.Client.Domain/Interfaces/IBinanceClient.cs b/Binance.API.Csharp.Client.Domain/Interfaces/IBinanceClient.cs
index 5312215..8aac2a6 100644
--- a/Binance.API.Csharp.Client.Domain/Interfaces/IBinanceClient.cs
+++ b/Binance.API.Csharp.Client.Domain/Interfaces/IBinanceClient.cs
@@ -54,11 +54,17 @@ public interface IBinanceClient
         Task<IEnumerable<Candlestick>> GetCandleSticks(string symbol, TimeInterval interval, DateTime? startTime = null, DateTime? endTime = null, int limit = 500);
 
         /// <summary>
-        /// 24 hour price change statistics.
+        /// Single 24 hour price change statistics.
         /// </summary>
         /// <param name="symbol">Ticker symbol.</param>
         /// <returns></returns>
-        Task<IEnumerable<PriceChangeInfo>> GetPriceChange24H(string symbol);
+        Task<PriceChangeInfo> GetPriceChange24H(string symbol);
+
+        /// <summary>
+        /// All 24 hour price change statistics.
+        /// </summary>
+        /// <returns></returns>
+        Task<IEnumerable<PriceChangeInfo>> GetAllPriceChanges24H();
 
         /// <summary>
         /// Latest price for all symbols.
diff --git a/Binance.API.Csharp.Client.Test/BinanceTest.cs b/Binance.API.Csharp.Client.Test/BinanceTest.cs
index 4dce8bd..156e2e3 100644
--- a/Binance.API.Csharp.Client.Test/BinanceTest.cs
+++ b/Binance.API.Csharp.Client.Test/BinanceTest.cs
@@ -45,9 +45,15 @@ public void GetAggregateTrades()
         }
 
         [TestMethod]
-        public void GetPriceChange24H()
+        public void GetAllPriceChanges24H()
         {
-            var priceChangeInfo = binanceClient.GetPriceChange24H().Result;
+            var priceChangeInfo = binanceClient.GetAllPriceChanges24H().Result;
+        }
+
+        [TestMethod]
+        public void GetSinglePriceChanges24H()
+        {
+            var priceChangeInfo = binanceClient.GetPriceChange24H("ethbtc").Result;
         }
 
         [TestMethod]
diff --git a/Binance.API.Csharp.Client/BinanceClient.cs b/Binance.API.Csharp.Client/BinanceClient.cs
index fd65700..558786c 100644
--- a/Binance.API.Csharp.Client/BinanceClient.cs
+++ b/Binance.API.Csharp.Client/BinanceClient.cs
@@ -189,12 +189,21 @@ public async Task<IEnumerable<Candlestick>> GetCandleSticks(string symbol, TimeI
         /// </summary>
         /// <param name="symbol">Ticker symbol.</param>
         /// <returns></returns>
-        public async Task<IEnumerable<PriceChangeInfo>> GetPriceChange24H(string symbol = "")
+        public async Task<PriceChangeInfo> GetPriceChange24H(string symbol)
         {
-            var args = string.IsNullOrWhiteSpace(symbol) ? "" : $"symbol={symbol.ToUpper()}";
-
-            var result = await _apiClient.CallAsync<IEnumerable< PriceChangeInfo>>(ApiMethod.GET, EndPoints.TickerPriceChange24H, false, args);
+            var args = $"symbol={symbol.ToUpper()}";
+            var result = await _apiClient.CallAsync<PriceChangeInfo>(ApiMethod.GET, EndPoints.TickerPriceChange24H, false, args);
+            return result;
+        }
 
+        /// <summary>
+        /// All 24 hour price change statistics.
+        /// </summary>
+        /// <param name="symbol">Ticker symbol.</param>
+        /// <returns></returns>
+        public async Task<IEnumerable<PriceChangeInfo>> GetAllPriceChanges24H()
+        {
+            var result = await _apiClient.CallAsync<IEnumerable<PriceChangeInfo>>(ApiMethod.GET, EndPoints.TickerPriceChange24H, false);
             return result;
         }