命名空间
System.Security.Cryptography
private string getMd5(string _string) { MD5 md5 = MD5.Create(); string rstring = string.Empty; byte[] md5b= md5.ComputeHash(Encoding.UTF8.GetBytes(_string)); foreach (byte b in md5b) { rstring += b.ToString("X02"); } return rstring; } private void but_JiaMi_Click(object sender, EventArgs e) { if(!string.IsNullOrEmpty(Txt_MiWen.Text.Trim())) { textBox2.Text=getMd5(Txt_MiWen.Text.Trim()); } }