Automatically create folders if does not exists in C#

Question

So, I am trying to create a file at a specific path but the code I have doesn't allows me to create folders.

This is the code I have:

public void LogFiles()
{
    string data = string.Format("LogCarga-{0:yyyy-MM-dd_hh-mm-ss}.txt", DateTime.Now);
    for (int linhas = 0; linhas < dataGridView1.Rows.Count; linhas++)
    {
        if (dataGridView1.Rows[linhas].Cells[8].Value.ToString().Trim() != "M")
        {
            var pathWithEnv = @"%USERPROFILE%\AppData\Local\Cargas - Amostras\_logs\";
            var filePath = Environment.ExpandEnvironmentVariables(pathWithEnv);
            using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate))
            {
                using (StreamWriter writer = File.AppendText(filePath + data))
                {
                    string carga = dataGridView1.Rows[linhas].Cells[0].Value.ToString();
                    string referencia = dataGridView1.Rows[linhas].Cells[1].Value.ToString();
                    string quantidade = dataGridView1.Rows[linhas].Cells[2].Value.ToString();
                    string dataemissao = dataGridView1.Rows[linhas].Cells[3].Value.ToString();
                    string linha = dataGridView1.Rows[linhas].Cells[4].Value.ToString();
                    string marca = dataGridView1.Rows[linhas].Cells[5].Value.ToString().Trim();
                    string descricaoweb = dataGridView1.Rows[linhas].Cells[6].Value.ToString().Trim();
                    string codprod = dataGridView1.Rows[linhas].Cells[7].Value.ToString().Trim();
                    string tipoemb = dataGridView1.Rows[linhas].Cells[8].Value.ToString().Trim();
                    string nomepc = System.Environment.MachineName;
                    writer.WriteLine(carga + ", " + referencia + ", " + quantidade + ", " + dataemissao + ", " + linha + ", " + marca + ", " + descricaoweb + ", " + codprod + ", "
                            + tipoemb + ", " + nomepc);
                    }  
                }  
            }
        }
    }

This %USERPROFILE%\AppData\Local\ in the universal path and I want to automatically create the \Cargas - Amostras\_logs\.

Do you have any idea how to do it?

Answer 1

The simpelest solution is replace

using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate))

with

System.IO.Directory.CreateDirectory(filePath)

That will create the directory if it does not exist or do nothing if it does.