C# function to run openssl x509 certificate generation commands with prefilled parameters so the user does not need to interact with it?

Question

I wand to have a C# function that would generate x509 certificate by executing openssl commands. I found this post: Execute multiple command prompt commands from c#, which was very helpful,so my function will look like something like this:

            Process cmd = new Process();

            cmd.StartInfo.FileName = "cmd.exe";
            cmd.StartInfo.RedirectStandardInput = true;
            cmd.StartInfo.UseShellExecute = false;

            cmd.Start();

            using (StreamWriter sw = cmd.StandardInput)
            {
                if (sw.BaseStream.CanWrite)
                {
                    sw.WriteLine("openssl genrsa -aes256 -out E:\\testing_folder\\test_file_com.key.pem 2048");
                    //other openssl commands
                }
            }

but for me, I am trying to generate the x509 certificate =>

1. First, I am generating private key as a file privkey.key
2. Then I am executing the openssl command 'req -new -sha256 -key privkey.key -out cert.csr' to generate csr certificate, and when executing this, there is a prompt asking you for country name, state/province, password, etc.:
3. 

So my question is,Is it possible to run this command with a prefilled parameter so the user does not need to interact with it? in my C# function, how would I write answers to these prompts and execute the commands feeding the answers to the prompts without having the user respond to the prompts?

Thanks in advance!!