diff --git a/vs/csharp/cgroup/Dockerfile b/vs/csharp/cgroup/Dockerfile
new file mode 100644
index 0000000..29ec19d
--- /dev/null
+++ b/vs/csharp/cgroup/Dockerfile
@@ -0,0 +1,27 @@
+# Use the official .NET Core SDK image from Docker Hub
+FROM mcr.microsoft.com/dotnet/sdk:7.0 AS build
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Copy the project file and restore dependencies
+COPY *.csproj ./
+RUN dotnet restore
+
+# Copy the remaining source code
+COPY . .
+
+# Build the project
+RUN dotnet build -c Release -o out
+
+# Run unit tests (if any)
+# RUN dotnet test
+
+# Publish the project
+RUN dotnet publish -c Release -o out
+
+# Build runtime image
+FROM mcr.microsoft.com/dotnet/aspnet:7.0 AS runtime
+WORKDIR /app
+COPY --from=build /app/out .
+ENTRYPOINT ["dotnet", "YourAppName.dll"]
diff --git a/vs/csharp/cgroup/Program.cs b/vs/csharp/cgroup/Program.cs
new file mode 100644
index 0000000..1f0ba8b
--- /dev/null
+++ b/vs/csharp/cgroup/Program.cs
@@ -0,0 +1,51 @@
+using System;
+using System.IO;
+
+namespace YourAppName
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            PrintSystemInfo();
+        }
+
+        static void PrintSystemInfo()
+        {
+            Console.WriteLine("System Information:");
+            Console.WriteLine("-------------------");
+
+            // Querying CPU information
+            Console.WriteLine("CPU:");
+            int coreCount = Environment.ProcessorCount;
+            Console.WriteLine($"  Number of Cores: {coreCount}");
+
+            // Querying memory information
+            Console.WriteLine("\nMemory:");
+            if (File.Exists("/proc/meminfo"))
+            {
+                string[] lines = File.ReadAllLines("/proc/meminfo");
+                foreach (string line in lines)
+                {
+                    string[] parts = line.Split(':');
+                    if (parts.Length == 2)
+                    {
+                        string name = parts[0].Trim();
+                        string value = parts[1].Trim();
+
+                        if (name == "MemTotal" || name == "MemFree")
+                        {
+                            long memoryKiB = long.Parse(value.Split(' ')[0]);
+                            double memoryMiB = memoryKiB / 1024.0;
+                            Console.WriteLine($"  {name}: {memoryMiB:F2} MiB");
+                        }
+                    }
+                }
+            }
+            else
+            {
+                Console.WriteLine("Memory information retrieval is not supported on this platform.");
+            }
+        }
+    }
+}
diff --git a/vs/csharp/cgroup/YourAppName.csproj b/vs/csharp/cgroup/YourAppName.csproj
new file mode 100644
index 0000000..120e38c
--- /dev/null
+++ b/vs/csharp/cgroup/YourAppName.csproj
@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>
diff --git a/vs/csharp/cgroup/dew_it.sh b/vs/csharp/cgroup/dew_it.sh
new file mode 100644
index 0000000..1998d82
--- /dev/null
+++ b/vs/csharp/cgroup/dew_it.sh
@@ -0,0 +1,2 @@
+docker build -t s50600822/cgroupcheck:csharp .
+docker run --cpus=2 --memory=512m  s50600822/cgroupcheck:csharp
\ No newline at end of file
diff --git a/vs/java/cgroup/README.md b/vs/java/cgroup/README.md
index 0df0ccf..c3fc747 100644
--- a/vs/java/cgroup/README.md
+++ b/vs/java/cgroup/README.md
@@ -156,6 +156,64 @@ Total System Memory: 7941 MB
 ```
 
 
+### Csharp
+```c#
+using System;
+using System.IO;
+
+namespace App {
+    class Program {
+        static void Main(string[] args) {
+            PrintSystemInfo();
+        }
+
+        static void PrintSystemInfo() {
+            Console.WriteLine("System Information:");
+            Console.WriteLine("-------------------");
+
+            Console.WriteLine("CPU:");
+            int coreCount = Environment.ProcessorCount;
+            Console.WriteLine($"  Number of Cores: {coreCount}");
+
+            Console.WriteLine("\nMemory:");
+            if (File.Exists("/proc/meminfo")) {
+                string[] lines = File.ReadAllLines("/proc/meminfo");
+                foreach (string line in lines) {
+                    string[] parts = line.Split(':');
+                    if (parts.Length == 2) {
+                        string name = parts[0].Trim();
+                        string value = parts[1].Trim();
+
+                        if (name == "MemTotal" || name == "MemFree") {
+                            long memoryKiB = long.Parse(value.Split(' ')[0]);
+                            double memoryMiB = memoryKiB / 1024.0;
+                            Console.WriteLine($"  {name}: {memoryMiB:F2} MiB");
+                        }
+                    }
+                }
+            } else {
+                Console.WriteLine("Memory information retrieval is not supported on this platform.");
+            }
+        }
+    }
+}
+
+```
+
+test
+```bash
+docker run --cpus=2 --memory=512m  s50600822/cgroupcheck:csharp
+
+System Information:
+-------------------
+CPU:
+  Number of Cores: 2
+
+Memory:
+  MemTotal: 7841.18 MiB
+  MemFree: 5416.21 MiB
+```
+
 ### See also
 
 https://github.com/s50600822/Notes/wiki/Cgroup