C#加密和解密

在c#.net中，当我试图解密文件时，它会向我显示此错误，但对加密有效

错误：进程无法访问文件SecureDownloadManager.log，因为另一个进程正在使用该文件

代码：

---

该错误是由于未完全处理对象造成的。使用后，需要使用“using”子句来释放对象

您可以使用以下使用

FileStream

的代码：

System.IO.File.WriteAllBytes(outputFile);

它取代了：

FileStream fsOut = new FileStream(outputFile, FileMode.Open, FileAccess.Write, FileShare.ReadWrite);

int data;
while ((data = cs.ReadByte()) != -1)
    fsOut.WriteByte((byte)data);

fsOut.Close();
cs.Close();
fsCrypt.Close();

---

我希望它能解决您的问题。

请尝试以下代码，并告诉我它是否能解决问题

//EncryptFile();
try
{
    OpenFileDialog dialog = new OpenFileDialog();
    dialog.Filter = "All Files (*.*)|";
    dialog.InitialDirectory = @"Desktop";
    dialog.Title = "Please select a file to encrypt.";

    dialog.ShowDialog();

    inputFile = dialog.FileName;

    outputFile = inputFile;

    string password = @"myKey123"; // Your Key Here
    UnicodeEncoding UE = new UnicodeEncoding();
    byte[] key = UE.GetBytes(password);

    string cryptFile = outputFile;
    using (FileStream fsCrypt = new FileStream(cryptFile, FileMode.Create))
    {
        RijndaelManaged RMCrypto = new RijndaelManaged();

        using (CryptoStream cs = new CryptoStream(fsCrypt,
          RMCrypto.CreateEncryptor(key, key),
          CryptoStreamMode.Write))
        {
            using (FileStream fsIn = new FileStream(inputFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
            {
                int data;
                while ((data = fsIn.ReadByte()) != -1)
                    cs.WriteByte((byte)data);
            }
        }

    }
}
catch (Exception ex)
{
    MessageBox.Show(ex.Message);
}

---

我已经更改了您的加密代码，请将其复制到您的加密按钮单击，然后重试

//EncryptFile();
try
{
    OpenFileDialog dialog = new OpenFileDialog();
    dialog.Filter = "All Files (*.*)|";
    dialog.InitialDirectory = @"Desktop";
    dialog.Title = "Please select a file to encrypt.";

    dialog.ShowDialog();

    inputFile = dialog.FileName;

    outputFile = inputFile;

    string password = @"myKey123"; // Your Key Here
    UnicodeEncoding UE = new UnicodeEncoding();
    byte[] key = UE.GetBytes(password);

    string cryptFile = outputFile;
    using (FileStream fsCrypt = new FileStream(cryptFile, FileMode.Create))
    {
        RijndaelManaged RMCrypto = new RijndaelManaged();

        using (CryptoStream cs = new CryptoStream(fsCrypt,
          RMCrypto.CreateEncryptor(key, key),
          CryptoStreamMode.Write))
        {
            using (FileStream fsIn = new FileStream(inputFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
            {
                int data;
                while ((data = fsIn.ReadByte()) != -1)
                    cs.WriteByte((byte)data);
            }
        }

    }
}
catch (Exception ex)
{
    MessageBox.Show(ex.Message);
}