我想编写一个动态LINQ查询,它根据两个时间帧startTime和errorTime来检查'where'条件。 本代码是在这里,在动态LINQ中添加条件
IQueryable<LogFormat> errorLines = null;
if (!string.IsNullOrEmpty(errorStartTime) && !string.IsNullOrEmpty(errorTime))
{
var sTime = DateTime.Parse(errorStartTime);
var eTime = DateTime.Parse(errorTime);
errorLines = from errorLine in File
where
(errorLine.DateTime >= sTime && errorLine.DateTime <= eTime) &&
(
errorLine.Level == "ERR"
|| errorLine.Level == "WARN"
)
select errorLine;
}
else if (!string.IsNullOrEmpty(errorStartTime))
{
var sTime = DateTime.Parse(errorStartTime);
errorLines = from errorLine in File
where
errorLine.DateTime >= sTime
&&
(
errorLine.Level == "ERR"
|| errorLine.Level == "WARN"
)
select errorLine;
}
else if (!string.IsNullOrEmpty(errorTime))
{
var eTime = DateTime.Parse(errorTime);
errorLines = from errorLine in File
where
errorLine.DateTime <= eTime
&&
(
errorLine.Level == "ERR"
|| errorLine.Level == "WARN"
)
select errorLine;
}
else
{
errorLines = from errorLine in File
where
errorLine.Level == "ERR"
|| errorLine.Level == "WARN"
select errorLine;
}
我能知道如何只有一个查询,以便我可以把开始时间和动态errortime得到的结果?