棘手的问题－“WindowsFormsApplication1.Class.DES”的类型初始值设定项引发异常。

[sjf_kk]

//俺把加密放在类中。然后在点击Button后出错提示：“WindowsFormsApplication1.Class.DES”的类型初始值设定项引发异常。
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;

namespace WindowsFormsApplication1.Class
{

class DES
    {
        private static byte[] cipherbytes = new byte[1];
        private static CryptoStream CStream;
        private static byte[] finalbytes;
        private static MemoryStream MStream = new MemoryStream();
        private static byte[] plainbytes = Encoding.UTF8.GetBytes(plainText);
        private static string plainText = "";

        public static byte[] JM(string JMPuls_Text, byte[] Mykey)
        {
            SymmetricAlgorithm algorithm = Rijndael.Create();
            algorithm.Key = Mykey;
            plainText = JMPuls_Text;
            algorithm.Mode = CipherMode.ECB;
            algorithm.Padding = PaddingMode.Zeros;
            byte[] datas = Encoding.UTF8.GetBytes(plainText);
            MStream = new MemoryStream();
            CStream = new CryptoStream(MStream, algorithm.CreateEncryptor(), CryptoStreamMode.Write);
            CStream.Write(datas, 0, datas.Length);
            CStream.Close();
            cipherbytes = MStream.ToArray();
            MStream.Close();
            return cipherbytes;
        }
   }

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using WindowsFormsApplication1.Class;



namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        //DES DES_OBJ = new DES();

        public Form1()
        {
            InitializeComponent();
        }

        private  byte[] mykey = { 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2 };

        private void button1_Click(object sender, EventArgs e)
        {
           
            byte[] ds = DES.JM(this.textBox1.Text,mykey);
            this.textBox2.Text = Convert.ToBase64String(ds);
        }
    }
}

[chyyyin]

异常报在什么地方？！

[mykelly6]

MemoryStream初始化的时候好像要设定他的容量的。
也就是说你new的时候可以不指定参数，但是还是要补上capacity这个属性的设置的

[feifeiyiwen]

同意楼上的观点

[mjjzg]

差了个using System.Security;的命名空间吧

[sjf_kk]

[Quote=引用 4 楼 mjjzg 的回复:]
差了个using System.Security;的命名空间吧
[/Quote]

应该不是吧！

//另外在说明下，编译是OK了，就不知道还差什么，蛮棘手的

[mykelly6]

最好自己断点了调试下吧，肯定是DES类里面哪个对象或者变量没有给初值~

[我姓区不姓区]

通常都是由于静态成员引起的，参考:
http://www.cnblogs.com/kirinboy/archive/2007/11/07/951903.html

[Garnett_KG]

语句顺序有问题。

class DES
    {
        private static byte[] cipherbytes = new byte[1];
        private static CryptoStream CStream;
        private static byte[] finalbytes;
        private static MemoryStream MStream = new MemoryStream();
        private static string plainText = "";  //要先给plainText赋值。
        private static byte[] plainbytes = Encoding.UTF8.GetBytes(plainText);


        public static byte[] JM(string JMPuls_Text, byte[] Mykey)
        {
            SymmetricAlgorithm algorithm = Rijndael.Create();
            algorithm.Key = Mykey;
            plainText = JMPuls_Text;
            algorithm.Mode = CipherMode.ECB;
            algorithm.Padding = PaddingMode.Zeros;
            byte[] datas = Encoding.UTF8.GetBytes(plainText);
            MStream = new MemoryStream();
            CStream = new CryptoStream(MStream, algorithm.CreateEncryptor(), CryptoStreamMode.Write);
            CStream.Write(datas, 0, datas.Length);
            CStream.Close();
            cipherbytes = MStream.ToArray();
            MStream.Close();
            return cipherbytes;
        }
   }

[蓝海D鱼]

是不是应该加个 public

public class DES

[sjf_kk]

7、8楼可以说清楚点吗？还是不明白？

[Quote=引用 9 楼 jingshuaizh 的回复:]
是不是应该加个 public

public class DES

[/Quote]

回9楼，不是加个public的问题。

期待高人牛人~ ^_^

[真相重于对错]

private static byte[] plainbytes = Encoding.UTF8.GetBytes(plainText);
private static string plainText = "";

[真相重于对错]

上面两句，颠倒位置，要不然怎么初始化