我打算实现一个方法来比较两个大的XML文件(但其他每个都少于10,000个元素行)。如何高效地逐项比较两个大的XML文件?
下面的方法工作,但是当文件超过100行时它不好。它开始非常缓慢。我如何找到更有效的解决方案。也许需要高C#编程设计或更好的C#算法#& XML处理。
感谢您的意见提前。
//Remove the item which not in Event Xml and ConfAddition Xml files
XmlDocument doc = new XmlDocument();
doc.Load(xmlFile_AlarmSettingUp);
bool isNewAlid_Event = false;
bool isNewAlid_ConfAddition = false;
int alid = 0;
XmlNodeList xnList = doc.SelectNodes("/Equipment/AlarmSettingUp/EnabledALIDs/ALID");
foreach (XmlNode xn in xnList)
{
XmlAttributeCollection attCol = xn.Attributes;
for (int i = 0; i < attCol.Count; ++i)
{
if (attCol[i].Name == "alid")
{
alid = int.Parse(attCol[i].Value.ToString());
break;
}
}
//alid = int.Parse(attCol[1].Value.ToString());
XmlDocument docEvent_Alarm = new XmlDocument();
docEvent_Alarm.Load(xmlFile_Event);
XmlNodeList xnListEvent_Alarm = docEvent_Alarm.SelectNodes("/Equipment/Alarms/ALID");
foreach (XmlNode xnEvent_Alarm in xnListEvent_Alarm)
{
XmlAttributeCollection attColEvent_Alarm = xnEvent_Alarm.Attributes;
int alidEvent_Alarm = int.Parse(attColEvent_Alarm[1].Value.ToString());
if (alid == alidEvent_Alarm)
{
isNewAlid_Event = false;
break;
}
else
{
isNewAlid_Event = true;
//break;
}
}
XmlDocument docConfAddition_Alarm = new XmlDocument();
docConfAddition_Alarm.Load(xmlFile_ConfAddition);
XmlNodeList xnListConfAddition_Alarm = docConfAddition_Alarm.SelectNodes("/Equipment/Alarms/ALID");
foreach (XmlNode xnConfAddition_Alarm in xnListConfAddition_Alarm)
{
XmlAttributeCollection attColConfAddition_Alarm = xnConfAddition_Alarm.Attributes;
int alidConfAddition_Alarm = int.Parse(attColConfAddition_Alarm[1].Value.ToString());
if (alid == alidConfAddition_Alarm)
{
isNewAlid_ConfAddition = false;
break;
}
else
{
isNewAlid_ConfAddition = true;
//break;
}
}
if (isNewAlid_Event && isNewAlid_ConfAddition)
{
// Store the root node of the destination document into an XmlNode
XmlNode rootDest = doc.SelectSingleNode("/Equipment/AlarmSettingUp/EnabledALIDs");
rootDest.RemoveChild(xn);
}
}
doc.Save(xmlFile_AlarmSettingUp);
我的XML文件是这样的。这两个XML文件是相同的样式。除了有些时候,其中一个可能会被我的应用程序修改。这就是为什么我需要比较他们,如果修改。
<?xml version="1.0" encoding="utf-8"?>
<Equipment xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Licence LicenseId="" LicensePath="" />
<!--Alarm Setting Up XML File-->
<AlarmSettingUp>
<EnabledALIDs>
<ALID logicalName="Misc_EV_RM_STATION_ALREADY_RESERVED" alid="536870915" alcd="7" altx="Misc_Station 1 UnitName 2 SlotId already reserved" ceon="Misc_AlarmOn_EV_RM_STATION_ALREADY_RESERVED" ceoff="Misc_AlarmOff_EV_RM_STATION_ALREADY_RESERVED" />
<ALID logicalName="Misc_EV_RM_SEQ_READ_ERROR" alid="536870916" alcd="7" altx="Misc_Sequence ID 1 d step 2 d read error for wafer in 3 UnitName 4 SlotId" ceon="Misc_AlarmOn_EV_RM_SEQ_READ_ERROR" ceoff="Misc_AlarmOff_EV_RM_SEQ_READ_ERROR" />
...
...
...
</EnabledALIDs>
</AlarmSettingUp>
</Equipment>
呃,当您尝试对性能进行基准测试时,嵌套迭代不适用。清理你的代码。 – 2010-12-02 10:02:41