项目中的常用方法

 public class CommonTools
    {
        private static String EncodeKey="Simon";
        public static Object Copy(Object source, Object item)
        {
            Type t = source.GetType();
            foreach (PropertyInfo property in t.GetProperties())
            {
                PropertyInfo pro = t.GetProperty(property.Name);
                if (pro != null && property.PropertyType == pro.PropertyType && pro.CanWrite && property.CanRead)
                {
                    pro.SetValue(item, property.GetValue(source, null), null);
                }
            }
            return item;
        }
        public static String Encode(String str)
        {
            String result = String.Empty;
            CspParameters param = new CspParameters();
            param.KeyContainerName =EncodeKey;//密匙容器的名称，保持加密解密一致才能解密成功
            using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(param))
            {
                byte[] plaindata = Encoding.Default.GetBytes(str);//将要加密的字符串转换为字节数组
                byte[] encryptdata = rsa.Encrypt(plaindata, false);//将加密后的字节数据转换为新的加密字节数组
                result = Convert.ToBase64String(encryptdata);//将加密后的字节数组转换为字符串
            }
            return result;
        }
        public static String Decode(String str)
        {
            String result = String.Empty;
            CspParameters param = new CspParameters();
            param.KeyContainerName = EncodeKey;
            using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(param))
            {
                byte[] encryptdata = Convert.FromBase64String(str);
                byte[] decryptdata = rsa.Decrypt(encryptdata, false);
                result = Encoding.Default.GetString(decryptdata);
            }
            return result;
        }
    }