/// <summary>
/// 回滚
/// </summary>
/// <param name="dbName"></param>
public static void Rollback(string dbName)
{
CheckDbName(dbName);
string key = GetKey(dbName);
if (!ServiceContext.Current.Contains(key))
{
throw new InvalidOperationException(string.Format("数据库{0}的上下文环境不存在。", dbName));
}
DataAccessContext dac = ServiceContext.Current[key] as DataAccessContext;
if (dac == null)
{
throw new Exception("DataAccessContext is null");
}
try
{
dac.Rollback();
}
finally
{
dac.CloseConnection();
ServiceContext.Current.Remove(key);
}
}