diff --git a/C#进阶/C#进阶.sln b/C#进阶/C#进阶.sln
new file mode 100644
index 0000000..d62587b
--- /dev/null
+++ b/C#进阶/C#进阶.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36202.13 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "test", "test\test.csproj", "{5B032C55-6E02-4EA9-BE52-083A6DA91295}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{5B032C55-6E02-4EA9-BE52-083A6DA91295}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5B032C55-6E02-4EA9-BE52-083A6DA91295}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5B032C55-6E02-4EA9-BE52-083A6DA91295}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5B032C55-6E02-4EA9-BE52-083A6DA91295}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B642275E-DB21-46C0-BDBF-664A186040EC}
+	EndGlobalSection
+EndGlobal
diff --git a/C#进阶/test/Program.cs b/C#进阶/test/Program.cs
new file mode 100644
index 0000000..7d65486
--- /dev/null
+++ b/C#进阶/test/Program.cs
@@ -0,0 +1,10 @@
+namespace test
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello, World!");
+        }
+    }
+}
diff --git a/C#进阶/test/test.csproj b/C#进阶/test/test.csproj
new file mode 100644
index 0000000..2150e37
--- /dev/null
+++ b/C#进阶/test/test.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>