get program memory usage in csharp

To get the current memory usage of a C# program in bytes, you can use the Process class from the System.Diagnostics namespace. Here's some sample code that demonstrates how to use it:

main.cs
using System;
using System.Diagnostics;

class Program
{
    static void Main(string[] args)
    {
        Process currentProcess = Process.GetCurrentProcess();
        long memoryUsage = currentProcess.PrivateMemorySize64;
        Console.WriteLine("Current memory usage: {0} bytes", memoryUsage);
    }
}
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In this code, we're using the GetCurrentProcess method to get a Process object that represents the current running process (i.e. our C# program). Then, we're using the PrivateMemorySize64 property of the Process class to get the current memory usage of the process in bytes. Finally, we're printing out the result to the console.

Note that the PrivateMemorySize64 property returns the amount of memory that is committed to the process by the operating system, but this may not necessarily be the amount of memory that the process is actually using at the moment. To get a more accurate measurement of the program's memory usage, you may need to use a more sophisticated profiling tool.