diff --git a/StopWatchbySM.sln b/StopWatchbySM.sln
new file mode 100644
index 0000000..918de6e
--- /dev/null
+++ b/StopWatchbySM.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29209.62
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "StopWatchbySM", "StopWatchbySM\StopWatchbySM.vcxproj", "{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Debug|x64.ActiveCfg = Debug|x64
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Debug|x64.Build.0 = Debug|x64
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Debug|x86.ActiveCfg = Debug|Win32
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Debug|x86.Build.0 = Debug|Win32
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Release|x64.ActiveCfg = Release|x64
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Release|x64.Build.0 = Release|x64
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Release|x86.ActiveCfg = Release|Win32
+		{9A6C931D-0457-4BA6-A43B-C3BF6859CE7F}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {AF11AA15-2E43-4A3A-AD93-16729AB893E5}
+	EndGlobalSection
+EndGlobal