Software Developer Blog

101 Пример использования LINQ

Нашел ссылку, очень много полезных примеров применения LINQ http://code.msdn.microsoft.com/101-LINQ-Samples-3fb9811b

с# Serialization to file or string / с# Сериализация в файл или в строку + Десериализация

static void SerializeToFile(object o)
{
  XmlSerializer serializer = new XmlSerializer(o.GetType());
  using (Stream writer = new FileStream("output.xml", FileMode.Create))
  {
    serializer.Serialize(writer, o);
  }
}

public static string SerializeToString(object obj)
        {
            XmlSerializer serializer = new XmlSerializer(obj.GetType());

            using (StringWriter writer = new StringWriter())
            {
                serializer.Serialize(writer, obj);

                return writer.ToString();
            }
        }
public static object DeserializeFromFile(object obj,string path)
{
  XmlSerializer serializer = new XmlSerializer(obj.GetType());
 
  using (XmlReader reader = XmlReader.Create(path))
  {
    object o = serializer.Deserialize(reader);
  }
}

//From string

var serializer = new XmlSerializer(typeof(Car));
using (var reader = new StringReader(xml))
{
    var car = (Car)serializer.Deserialize(reader);
}

Изменить строку подключения в app.conig / How to change connection string in app.config

static void AddConnectionStringMyDB()
        {
            System.Configuration.Configuration config =
                ConfigurationManager.OpenExeConfiguration(
                ConfigurationUserLevel.None);
            ConnectionStringsSection csSection =
              config.ConnectionStrings;
            ConnectionStringSettings connection = new ConnectionStringSettings();
            connection.Name = "Rozn_Client.Properties.Settings.userDBConnectionString";
            connection.ProviderName = "Microsoft.SqlServerCe.Client.4.0";
            connection.ConnectionString = "Data Source=|DataDirectory|\\myDB.sdf;Password=mypassword;Persist Security Info=True";
            csSection.ConnectionStrings.Add(connection);
            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("connectionStrings");
        }

C# Get the version of your solution in Visual Studio

string s1 = Application.ProductVersion; //Only product version
string s2 = System.Reflection.Assembly.GetExecutingAssembly().FullName; // Returns Project1, Version=1.0.2281.26155, Culture=neutral, PubliKeyToken=null

Чем просматривать/редактировать/удалять/смотреть версию sdf

http://sourceforge.net/p/compactview/home/Home/ я использовал вот этот опенсорс инструмент

c# получить из сертификата открытый и закрытый ключ / Get from X509 certificate private and public keys

X509Certificate2 cert = new X509Certificate2("cert.pfx");
//(RSACryptoServiceProvider)cert.PrivateKey
//(RSACryptoServiceProvider)cert.PublicKey.Key

c# проверяем подпись сертификата x509 у файла / c# Verify x509 certificate signature

public static bool CertificateSignVerify(string signFilePath, byte[] data, RSACryptoServiceProvider rsaKey)
        {
            byte[] signature = File.ReadAllBytes(signFilePath);
            return rsaKey.VerifyData(data, new SHA1CryptoServiceProvider(), signature);
        }