Create a CSV File from a .NET Generic List

/// <summary>
/// Creates the CSV from a generic list.
/// </summary>;
/// <typeparam name="T"></typeparam>;
/// <param name="list">The list.</param>;
/// <param name="csvNameWithExt">Name of CSV (w/ path) w/ file ext.</param>;
        public static void CreateCSVFromGenericList<T>(List<T> list, string csvNameWithExt)
        {
            if (list == null || list.Count == 0) return;
 
                //get type from 0th member
                Type t = list[0].GetType();
                string newLine = Environment.NewLine;
 
                using (var sw = new StreamWriter(csvNameWithExt))
                {
                    //make a new instance of the class name we figured out to get its props
                    object o = Activator.CreateInstance(t);
                    //gets all properties
                    PropertyInfo[] props = o.GetType().GetProperties();
 
                    //foreach of the properties in class above, write out properties
                    //this is the header row
                    foreach (PropertyInfo pi in props)
                    {
                        sw.Write(pi.Name.ToUpper() + ",");
                    }
                    sw.Write(newLine);
 
                    //this acts as datarow
                    foreach (T item in list)
                    {
                        //this acts as datacolumn
                        foreach (PropertyInfo pi in props)
                        {
		  //this is the row+col intersection (the value)
                            string whatToWrite =
                                Convert.ToString(item.GetType()
                                                     .GetProperty(pi.Name)
                                                     .GetValue(item, null))
                                    .Replace(',', ' ') + ',';
 
                            sw.Write(whatToWrite);
 
                        }
                        sw.Write(newLine);
                    }
                }  
        }