我如何更正我的代码 [英] How do I correct my code

问题描述

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

using System.Security.Cryptography;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            RSACryptoServiceProvider myrsa = new RSACryptoServiceProvider();
            System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
            
            string s1 =richTextBox1.Text;
            string s2 =richTextBox2.Text;
            string s3 =richTextBox3.Text;

            Byte[] newdata = encoding.GetBytes(s1);
            Byte[] encrypted = myrsa.Encrypt(newdata, false);
            
            for (int i = 0; i < encrypted.Length;i++ )
                richTextBox2.Text += encrypted[i].ToString();   
           

            Byte[] decrypted = myrsa.Decrypt(encrypted, false);//decrypt 
            string dData = encoding.GetString(decrypted);
            richTextBox3.Text += dData;
                
            }

        private void button2_Click(object sender, EventArgs e)
        {
            RSACryptoServiceProvider myrsa = new RSACryptoServiceProvider();
            System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
            
            openFileDialog1.Title = "Insert Image"; 
            openFileDialog1.ShowDialog();
            openFileDialog1.Filter = "JPEG Images|*.jpg|GIF Images|*.gif";

            object r = new object();
            EventArgs en = new EventArgs();

            string s1 = richTextBox1.Text;
            string s2 = richTextBox2.Text;
            string s3 = richTextBox3.Text;

            string Chosen_File = "";
            Chosen_File = openFileDialog1.FileName;
            pictureBox1.Image = Image.FromFile(Chosen_File);
            
            byte[] byteData = imageToByteArray(pictureBox1.Image);
            string ToS1 = byteData.ToString();           

            Byte[] newdata = encoding.GetBytes(ToS1);
            Byte[] encrypted = myrsa.Encrypt(newdata, false);

            for (int i = 0; i < encrypted.Length; i++)
                richTextBox4.Text += encrypted[i].ToString();   
           
            
            Byte[] decrypted = myrsa.Decrypt(encrypted, false);//decrypt 
            pictureBox2.Image = byteArrayToImage(decrypted);
            
        
        }
        public byte[] imageToByteArray(System.Drawing.Image imageIn)
        {
            MemoryStream ms = new MemoryStream();
            imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
            return ms.ToArray();
        }

        public Image byteArrayToImage(byte[] byteArrayIn)
        {
            Stream ms = new MemoryStream(byteArrayIn);
            Image returnImage = Image.FromStream(ms);
            return returnImage;
        }       
        
    }
    
}

有错误按下按钮2.请复习。

There is an error while pressing button 2.Please Review.

推荐答案

简单：

Easy:

byte[] byteData = imageToByteArray(pictureBox1.Image);
string ToS1 = byteData.ToString();

Byte[] newdata = encoding.GetBytes(ToS1);

当你在数组上使用ToString时，你获取一个包含类名称的字符串，而不是数组数据的字符串表示。

在上面三行中的第三行放一个断点并查看ToS1的内容，你我会明白我的意思。



我不知道你认为代码应该怎么做，所以我不能告诉你怎么做才能解决它！

When you use ToString on an array, you get back a string which contains the name of the class, rather than as string representation of the array data.
Put a breakpoint on the third of the three lines above and look at the content of ToS1, you will see what I mean.

I have no idea what you think that code should do, so I can't really tell you what to do to fix it!

你的字节数组不包含有效的图像文件，所以行

It' seams that you byte array does not contain a valid image file, so the line

Image returnImage = Image.FromStream(ms);

失败，参数无效。

您可以尝试使用Image.FromStream的重写：http://msdn.microsoft.com/en-us/library/21zw9ah6(v=vs .110）.aspx [ ^ ] ...

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