Добавьте файлы проекта.

ExamGromov.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.2.32526.322
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ExamGromov", "ExamGromov\ExamGromov.csproj", "{5F574A78-4A1B-4B92-B625-23AD24954277}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{5F574A78-4A1B-4B92-B625-23AD24954277}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5F574A78-4A1B-4B92-B625-23AD24954277}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5F574A78-4A1B-4B92-B625-23AD24954277}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5F574A78-4A1B-4B92-B625-23AD24954277}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {DA0D55E0-2ADB-4D0F-BA38-1DCE3213519E}
+	EndGlobalSection
+EndGlobal

ExamGromov/ExamGromov.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

ExamGromov/Program.cs

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+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");