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[英]Using a C# WinForms control in a C++/CLI (WinForms) application
[英]C# Using a Class In My Winforms Application
大家好我正在为学校开发聊天应用程序。 它在C#中,我以前从未使用过的语言。 现在我有一个需要加密某些数据的winform,我的加密代码是自己的类,但由于某种原因我不能使用密码类中的任何函数。
这是代码的一个非常简化的版本。
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.Data;
using System.Security.Cryptography;
namespace WindowsFormsApplication2
{
public class SimpleAES
{
// Change these keys
private byte[] Key = { 123, 217, 19, 11, 24, 26, 85, 45, 114, 184, 27, 162, 37, 112, 222, 209, 241, 24, 175, 144, 173, 53, 196, 29, 24, 26, 17, 218, 131, 236, 53, 209 };
private byte[] Vector = { 146, 64, 191, 111, 23, 3, 113, 119, 231, 121, 252, 112, 79, 32, 114, 156 };
private ICryptoTransform EncryptorTransform, DecryptorTransform;
private System.Text.UTF8Encoding UTFEncoder;
public SimpleAES()
{
//This is our encryption method
RijndaelManaged rm = new RijndaelManaged();
//Create an encryptor and a decryptor using our encryption method, key, and vector.
EncryptorTransform = rm.CreateEncryptor(this.Key, this.Vector);
DecryptorTransform = rm.CreateDecryptor(this.Key, this.Vector);
//Used to translate bytes to text and vice versa
UTFEncoder = new System.Text.UTF8Encoding();
}
/// -------------- Two Utility Methods (not used but may be useful) -----------
/// Generates an encryption key.
public byte[] Encrypt(string TextValue)
{
//Translates our text value into a byte array.
Byte[] bytes = UTFEncoder.GetBytes(TextValue);
//Used to stream the data in and out of the CryptoStream.
MemoryStream memoryStream = new MemoryStream();
/*
* We will have to write the unencrypted bytes to the stream,
* then read the encrypted result back from the stream.
*/
#region Write the decrypted value to the encryption stream
CryptoStream cs = new CryptoStream(memoryStream, EncryptorTransform, CryptoStreamMode.Write);
cs.Write(bytes, 0, bytes.Length);
cs.FlushFinalBlock();
#endregion
#region Read encrypted value back out of the stream
memoryStream.Position = 0;
byte[] encrypted = new byte[memoryStream.Length];
memoryStream.Read(encrypted, 0, encrypted.Length);
#endregion
//Clean up.
cs.Close();
memoryStream.Close();
return encrypted;
}
}
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
byte[] result = Encrypt(textBox1.Text);
}
}
}
当我把它扔进visual studio时,对Encrypt()的函数调用以红色突出显示,它给出的描述是当前上下文中不存在Encrypt。
我对C ++有更多的经验,我觉得我的工作会有所作为,但我猜这不正确。
非常感激任何的帮助。
SimpleAES
不是静态类,因此您需要先创建它的实例,然后才能调用它的方法:
private void button1_Click(object sender, EventArgs e)
{
SimpleAES simpleAes = new SimpleAES();
byte[] result = simpleAes.Encrypt(textBox1.Text);
}
使SimpleAES的实例像@PoweredByOrange中的回答一样,或者像@Bob一样更改为静态,或者像我的回答一样对字符串进行扩展方法:
private void button1_Click(object sender, EventArgs e)
{
byte[] result = textBox1.Text.Encrypt();
}
public class Extensionmethods
{
public static byte[] Encrypt(this string TextValue)
{
//Your code here
}
}
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