//对密码进行加密操作
public static string CreatePwd(string pwd) {
MD5 md = MD5.Create();
string result = "";
byte[] data =md.ComputeHash( Encoding.Default.GetBytes(pwd)); //把密码拆分成字节进行加密
foreach (byte item in data) {
result += item .ToString("x2");
}
return result;
}