包含vb.net加锁解锁的词条
请教如何解决vb.net打开控制台程序控制输入输出锁死的问题。
如何处理锁死?同步的程序就有这个缺陷,条件得不到满足就不会返回。所以想不锁死就只能满足
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a.StandardOutput.ReadLine的需求。
如果确实满足不了或者无法预料能否满足怎么办?
将这个方法放入一个线程,这样线程锁死,主程序界面也不会锁死,还是会响应用户操作,而且主线程可以设定一个等待时间,如果超时就杀死线程。
vb.net中实现rsa加密解密 急!急!
我觉得你的并不是RSA加密解密算法。
在.net的有一个System.Security.Cryptography的命名空间,里面有一RSACryptoServiceProvider的类用来对byte进行RSA加密解密。
具体例子如下:
using System;
using System.Security.Cryptography;
using System.Text;
class RSACSPSample
{
static void Main()
{
try
{
//Create a UnicodeEncoder to convert between byte array and string.
UnicodeEncoding ByteConverter = new UnicodeEncoding();
//Create byte arrays to hold original, encrypted, and decrypted data.
byte[] dataToEncrypt = ByteConverter.GetBytes("Data to Encrypt");
byte[] encryptedData;
byte[] decryptedData;
//Create a new instance of RSACryptoServiceProvider to generate
//public and private key data.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Pass the data to ENCRYPT, the public key information
//(using RSACryptoServiceProvider.ExportParameters(false),
//and a boolean flag specifying no OAEP padding.
encryptedData = RSAEncrypt(dataToEncrypt,RSA.ExportParameters(false), false);
//Pass the data to DECRYPT, the private key information
//(using RSACryptoServiceProvider.ExportParameters(true),
//and a boolean flag specifying no OAEP padding.
decryptedData = RSADecrypt(encryptedData,RSA.ExportParameters(true), false);
//Display the decrypted plaintext to the console.
Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));
}
catch(ArgumentNullException)
{
//Catch this exception in case the encryption did
//not succeed.
Console.WriteLine("Encryption failed.");
}
}
static public byte[] RSAEncrypt(byte[] DataToEncrypt, RSAParameters RSAKeyInfo, bool DoOAEPPadding)
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Import the RSA Key information. This only needs
//toinclude the public key information.
RSA.ImportParameters(RSAKeyInfo);
//Encrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
return RSA.Encrypt(DataToEncrypt, DoOAEPPadding);
}
//Catch and display a CryptographicException
//to the console.
catch(CryptographicException e)
{
Console.WriteLine(e.Message);
return null;
}
}
static public byte[] RSADecrypt(byte[] DataToDecrypt, RSAParameters RSAKeyInfo,bool DoOAEPPadding)
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Import the RSA Key information. This needs
//to include the private key information.
RSA.ImportParameters(RSAKeyInfo);
//Decrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
return RSA.Decrypt(DataToDecrypt, DoOAEPPadding);
}
//Catch and display a CryptographicException
//to the console.
catch(CryptographicException e)
{
Console.WriteLine(e.ToString());
return null;
}
}
}
[Visual Basic]
Try
'Create a new RSACryptoServiceProvider object.
Dim RSA As New RSACryptoServiceProvider()
'Export the key information to an RSAParameters object.
'Pass false to export the public key information or pass
'true to export public and private key information.
Dim RSAParams As RSAParameters = RSA.ExportParameters(False)
Catch e As CryptographicException
'Catch this exception in case the encryption did
'not succeed.
Console.WriteLine(e.Message)
End Try
[C#]
try
{
//Create a new RSACryptoServiceProvider object.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Export the key information to an RSAParameters object.
//Pass false to export the public key information or pass
//true to export public and private key information.
RSAParameters RSAParams = RSA.ExportParameters(false);
}
catch(CryptographicException e)
{
//Catch this exception in case the encryption did
//not succeed.
Console.WriteLine(e.Message);
}
vb.net如何锁定除顶级窗体以外的操作
vb.net锁定除顶级窗体以外的操作步骤如下:
1、通过Show方法,用以显示MDIForm或Form对象。
2、当Show在显示无模式窗体时,随后遇到的代码则要执行。
3、当Show在显示模式窗体时,则随后的代码直到该窗体被隐藏或卸载时执行即可。
VB.NET开发的软件,大家一般都是怎么加密的
网上有很多专业的加密教程
最适合小开发者的软件加密方式就是下面这个
获取硬件信息和个人注册时的姓名手机号等一系列信息,通过预先设定好的加密函数进行散列加密,生成一个只有本人本机能使用的序列号,软件正版授权的时候用同样的方式生成序列号进行比对,一样则通过
VB.NET创建窗体后怎么解除UG选择锁定
使用 Explicitily(拼写不一定正确),就可以正常使用close方法关闭窗体。只是窗体关闭后,仍然驻留内存中,但是不影响程序的再次启动。如果是反复调试程序,则必须在UG中手动卸载(文件-实用工具-卸载共享图像,这个“图像”应该是翻译错误,实际上就是程序在内存中的实例)。
vb.net如何锁定web窗体
在你要点击的按钮里,定义一个新窗体的实例,然后用showdialog(),应该就可以吧
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