diff --git a/Correlator.sln b/Correlator.sln
index ea97844..84d78e1 100644
--- a/Correlator.sln
+++ b/Correlator.sln
@@ -8,19 +8,13 @@
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
-		Debug|x64 = Debug|x64
 		Release|Any CPU = Release|Any CPU
-		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|x64.ActiveCfg = Debug|x64
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|x64.Build.0 = Debug|x64
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|Any CPU.Build.0 = Release|Any CPU
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|x64.ActiveCfg = Release|x64
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

diff --git a/Correlator.sln b/Correlator.sln
index ea97844..84d78e1 100644
--- a/Correlator.sln
+++ b/Correlator.sln
@@ -8,19 +8,13 @@
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
-		Debug|x64 = Debug|x64
 		Release|Any CPU = Release|Any CPU
-		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|x64.ActiveCfg = Debug|x64
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Debug|x64.Build.0 = Debug|x64
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|Any CPU.Build.0 = Release|Any CPU
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|x64.ActiveCfg = Release|x64
-		{BD4834CC-8FE1-47B4-BF30-982CD23CBC7F}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Correlator/Util/MethodExtensions.cs b/Correlator/Util/MethodExtensions.cs
index 72fa7c3..50138c5 100644
--- a/Correlator/Util/MethodExtensions.cs
+++ b/Correlator/Util/MethodExtensions.cs
@@ -32,33 +32,12 @@
         /// <summary>
         /// 计算文件占用空间大小
         /// </summary>
-        /// <param name="size"></param>
+        /// <param name="length"></param>
         /// <returns></returns>
-        public static string FormatFileSize(this long size)
+        public static string FormatFileSize(this long length)
         {
-            string fileSize;
-            if (size == 0)
-            {
-                fileSize = "0B";
-            }
-            else if (size < 1024)
-            {
-                fileSize = $"{size:#.0}" + "B";
-            }
-            else if (size < 1048576)
-            {
-                fileSize = $"{(double)size / 1024:#.0}" + "K";
-            }
-            else if (size < 1073741824)
-            {
-                fileSize = $"{(double)size / 1048576:#.0}" + "M";
-            }
-            else
-            {
-                fileSize = $"{(double)size / 1073741824:#.0}" + "G";
-            }
-
-            return fileSize;
+            var size = (double)length / (1024 * 1024);
+            return $"{size:F2}MB";
         }
 
         /// <summary>