Answer 1

Answer 2

在DacFx 3.0中，DacStore不再可用。要从C＃代码获取版本，您需要查询数据库。这是一个例子：

  using System;
  using System.Data;
  using System.Data.SqlClient;

  class Program
  {
    static void Main()
    {
      try
      {
        string version = GetDatabaseVersion(@"Initial Catalog=xxx;Data Source=yyy;Integrated Security=True;Pooling=False", false);
        Console.WriteLine("Database has DAC pack version {0}.", version);
      }
      catch (Exception ex)
      {
        Console.ForegroundColor = ConsoleColor.Red;
        Console.WriteLine(ex.Message);
        Console.WriteLine();
        Console.ResetColor();
      }
      Console.WriteLine("Press any key to exit");
      Console.ReadKey(true);
    }

/// <summary>
/// Gets the database version.
/// </summary>
/// <param name="connectionString">The connection string of database to query.</param>
/// <param name="isAzure">True if we are querying an Azure database.</param>
/// <returns>DAC pack version</returns>
private static string GetDatabaseVersion(string connectionString, bool isAzure)
{
  var connectionStringBuilder = new SqlConnectionStringBuilder(connectionString);
  string instanceName = connectionStringBuilder.InitialCatalog;
  string databaseToQuery = "msdb";
  if (isAzure)
  {
    // On Azure we must be connected to the master database to query sysdac_instances
    connectionStringBuilder.InitialCatalog = "Master";
    databaseToQuery = "master";
  }

  string query = String.Format("select type_version from {0}.dbo.sysdac_instances WHERE instance_name = '{1}'", databaseToQuery, instanceName);
  using (var connection = new SqlConnection(connectionStringBuilder.ConnectionString))
  {
    connection.Open();
    SqlCommand command = connection.CreateCommand();
    command.CommandText = query;
    command.CommandTimeout = 15;
    command.CommandType = CommandType.Text;
    var version = (string)command.ExecuteScalar();
    return version;
  }
}

}