文件复制，文件加密，序列化

1.文件复制

namespace 文件操作01
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                textBox1.Text = ofd.FileName;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if (fbd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                textBox3.Text = fbd.SelectedPath;
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrWhiteSpace(textBox1.Text) ||
                string.IsNullOrWhiteSpace(textBox2.Text) ||
                string.IsNullOrWhiteSpace(textBox3.Text))
            {
                return;
            }
            double Num=Convert.ToDouble(comboBox1.SelectedItem);
            byte[] bs = new byte[(int)(Num * 1024 * 1024)];
            FileStream read = new FileStream(textBox1.Text.Trim(), FileMode.Open, FileAccess.Read);
            FileStream write = new FileStream(Path.Combine(textBox3.Text.Trim(), textBox2.Text).Trim(), FileMode.Create, FileAccess.Write);
            using (read)
            {
                using (write)
                {
                    int count = 0;
                    while((count=read.Read(bs,0,bs.Length))!=0)
                    {
                        write.Write(bs, 0, count);
                    }
                }
            }
            MessageBox.Show("复制成功");

        }
    }
}

 

2.文件加密与解密

 

namespace 文件加密与解密
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                textBox1.Text = ofd.FileName;
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if(fbd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                textBox3.Text = fbd.SelectedPath;
            }

        }

        private void button2_Click(object sender, EventArgs e)
        {
            FileStream read = new FileStream(textBox1.Text.Trim(), FileMode.Open, FileAccess.Read);
            FileStream write = new FileStream(Path.Combine(textBox3.Text.Trim(), textBox2.Text.Trim()), FileMode.Create, FileAccess.Write);
            using (read)
            {
                using (write)
                {
                    int count = 0;
                    byte[] bs = new byte[10000];
                    while ((count = read.Read(bs, 0, bs.Length)) != 0)
                    {
                        for (int i = 0; i < count; i++)
                        {
                            bs[i] = (byte)(bs[i] - 1);
                        }
                        write.Write(bs, 0, count);
                    }
                }
            }
            MessageBox.Show("加密成功");
        }

        private void button3_Click(object sender, EventArgs e)
        {
            FileStream read = new FileStream(textBox1.Text.Trim(), FileMode.Open, FileAccess.Read);
            FileStream write = new FileStream(Path.Combine(textBox3.Text.Trim(), textBox2.Text.Trim()), FileMode.Create, FileAccess.Write);
            using (read)
            {
                using (write)
                {
                    int count = 0;
                    byte[] bs = new byte[10000];
                    while ((count = read.Read(bs, 0, bs.Length)) != 0)
                    {
                        for (int i = 0; i < count; i++)
                        {
                            bs[i] = (byte)(bs[i] + 1);
                        }
                        write.Write(bs, 0, count);
                    }
                }
            }
            MessageBox.Show("解密成功");
        }

        private void button5_Click(object sender, EventArgs e)
        {
            textBox1.Text = "";
            textBox2.Text = "";
            textBox3.Text = "";
        }
    }
}

 

3序列化

namespace 序列化
{
    class Program
    {
        static void Main(string[] args)
        {
            List<person> personlist = new List<person>();
            personlist.Add(new person("张三1",'男',18));
            personlist.Add(new person("张三2", '男', 18));
            personlist.Add(new person("张三3", '男', 18));
            personlist.Add(new person("张三4", '男', 18));
            personlist.Add(new person("张三5", '男', 18));
            personlist.Add(new person("张三6", '男', 18));
            FileStream write = new FileStream(@"C:\Users\Avraber\Desktop\新建文件夹\4.txt", FileMode.Create, FileAccess.Write);
            using (write)
            {
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(write,personlist);
            }
            FileStream read = new FileStream(@"C:\Users\Avraber\Desktop\新建文件夹\4.txt", FileMode.Open, FileAccess.Read);
            using (read)
            {
                BinaryFormatter bf = new BinaryFormatter();
                personlist= (List<person>)bf.Deserialize(read);
            }

        }
    }
    [Serializable]
    class person
    {
        public person(string name, char gender, int age)
        {
            this.name = name;
            this.age = age;
            this.gender = gender;
        }
        string name;

        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        char gender;

        public char Gender
        {
            get { return gender; }
            set { gender = value; }
        }
        int age;

        public int Age
        {
            get { return age; }
            set { age = value; }
        }
    }
}