/// <summary>
/// 使用指定锁定行为启动一个数据库事务。
/// </summary>
/// <param name="level">事务的锁定行为。</param>
/// <returns>如果当前实例首次启动事务，则为 true，否则为 false。</returns>
public virtual bool BeginTransaction(IsolationLevel level = IsolationLevel.ReadCommitted)
{
tranStack.Push();
if (Transaction != null)
{
return(false);
}
if (TransactionScopeConnections.GetConnection(this) != null)
{
return(false);
}
Connection.TryOpen();
Transaction = Connection.BeginTransaction(level);
return(true);
}
/// <summary>
/// 使用指定锁定行为启动一个数据库事务。
/// </summary>
/// <param name="level">事务的锁定行为。</param>
/// <returns>如果当前实例首次启动事务，则为 true，否则为 false。</returns>
public virtual bool BeginTransaction(IsolationLevel level = IsolationLevel.ReadCommitted)
{
if (Transaction != null)
{
return(false);
}
if (TransactionScopeConnections.GetConnection(this) != null)
{
return(false);
}
Connection.TryOpen();
Tracer.Debug("Starting transcation.");
_transaction = Connection.BeginTransaction(Provider.AmendIsolationLevel(level));
_transactionScope = new DbTransactionScope(ConnectionString, _transaction);
return(true);
}