/// <summary>
/// 构造函数
/// </summary>
/// <param name="name">链接名称</param>
/// <param name="isolationLevel">事务级别</param>
public TransactionConnection(string name, IsolationLevel?isolationLevel = null)
{
Connection = ConnectionFactory.GetConnection(name);
Command = Connection.CreateCommand();
Transaction = isolationLevel.HasValue ? Connection.BeginTransaction(isolationLevel.Value) : Connection.BeginTransaction();
}