突然在xml中出错 [英] suddenly get errors in xml
问题描述
我有一个按钮，点击后会保存输入的所有信息。它工作了很好，直到突然它没有，我不知道为什么。我收到错误
system.xml.dll中发生未处理的System.Xml.XmlException类型异常
其他信息：系统错误。
我发现当有一些无法识别的
字符时，有时会发生这种情况，所以我甚至开始使用新的xml文件，但它仍然无法工作。
当我试图说出XmlNode Catalog = xml.DocumentElement时，它会对我大吼大叫。为什么会突然停止工作的任何
想法？
谢谢，
Mel
这里'是一些代码：
string cat = @" C：\Catalog4.xml" ;;
XmlDocument xml = new XmlDocument（）;
xml.Load（cat）;
XmlNode Catalog = xml.DocumentElement; （此处为绿色错误箭头）
XmlElement file = xml.CreateElement（" File"）;
file.InnerText = number.ToString（）;
Catalog.AppendChild（file）;
XmlElement eCust = xml.CreateElement（" Cust"）;
eCust.InnerText = cust;
file.AppendChild（eCust）;
xml.Save（cat）;
Hi,
I have a button that, when clicked, saves all the info entered. It worked
fine until suddenly it didn''t, and I have no idea why. I get the error
An unhandled exception of type ''System.Xml.XmlException'' occurred in
system.xml.dll
Additional information: System error.
I found that this sometimes happens when there''s some unrecognized
character, so I even started with a new xml file, but it still won''t work.
It yells at me when I try to say XmlNode Catalog = xml.DocumentElement. Any
ideas on why this would suddenly stop working?
Thanks,
Mel
Here''s some code:
string cat = @"C:\Catalog4.xml";
XmlDocument xml = new XmlDocument();
xml.Load(cat);
XmlNode Catalog = xml.DocumentElement; (green error arrow here)
XmlElement file = xml.CreateElement("File");
file.InnerText = number.ToString();
Catalog.AppendChild(file);
XmlElement eCust = xml.CreateElement("Cust");
eCust.InnerText = cust;
file.AppendChild(eCust);
xml.Save(cat);
推荐答案
melanieab写道：
melanieab wrote:
我收到错误
未处理的异常类型''System.Xml.XmlException''发生在
system.xml.dll中
附加信息：系统错误。
string cat = @" C：\Catalog4.xml" ;;
XmlDocument xml = new XmlDocument（）;
xml.Load（cat）;
I get the error
An unhandled exception of type ''System.Xml.XmlException'' occurred in
system.xml.dll
Additional information: System error.
string cat = @"C:\Catalog4.xml";
XmlDocument xml = new XmlDocument();
xml.Load(cat);
如果标记为
格式不正确，则Load方法会解析XML并抛出异常：
< http://msdn.microsoft.com/library/default.asp? url = / library / en-us / cpref / html / frlrfSystemXmlXmlDocumentClassLoadTopic2.asp>
所以赶上异常，例如
试试{
xml.Load（cat）;
}
catch（XmlException e）{
//现在检查e.Message，e.LineNumber，e.LinePosition这里
//找出XML解析器无法解析你的标记的原因，例如
}
-
Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/
Hi Melanieab，
可以包含Catalog4.xml文件中的内容副本，即
可能有助于更准确地解释你的问题。
Mark R Dawson
" melanieab"写道：
Hi Melanieab,
can you include a copy of what is inside your Catalog4.xml file, that
might help explain more precisely what your problem is.
Mark R Dawson
"melanieab" wrote:
我有一个按钮，点击后，保存输入的所有信息。它工作得很好，直到突然它没有，我不知道为什么。我收到错误
system.xml.dll中发生了'System.Xml.XmlException'类型的未处理异常
附加信息：系统错误。
我发现当有一些无法识别的角色时有时会发生这种情况，所以我甚至开始使用新的xml文件，但它仍然无法正常工作。
当我尝试时它会对我大喊大叫说XmlNode Catalog = xml.DocumentElement。关于为什么会突然停止工作的任何想法？
谢谢，
Mel
这里有一些代码：
string cat = @" C：\Catalog4.xml" ;;
XmlDocument xml = new XmlDocument（）;
xml.Load（cat）;
XmlNode Catalog = xml.DocumentElement; （此处为绿色错误箭头）
XmlElement file = xml.CreateElement（" File"）;
file.InnerText = number.ToString（）;
Catalog.AppendChild（file ）;
XmlElement eCust = xml.CreateElement（" Cust"）;
eCust.InnerText = cust;
file.AppendChild（eCust）;
xml。保存（猫）;
Hi,
I have a button that, when clicked, saves all the info entered. It worked
fine until suddenly it didn''t, and I have no idea why. I get the error
An unhandled exception of type ''System.Xml.XmlException'' occurred in
system.xml.dll
Additional information: System error.
I found that this sometimes happens when there''s some unrecognized
character, so I even started with a new xml file, but it still won''t work.
It yells at me when I try to say XmlNode Catalog = xml.DocumentElement. Any
ideas on why this would suddenly stop working?
Thanks,
Mel
Here''s some code:
string cat = @"C:\Catalog4.xml";
XmlDocument xml = new XmlDocument();
xml.Load(cat);
XmlNode Catalog = xml.DocumentElement; (green error arrow here)
XmlElement file = xml.CreateElement("File");
file.InnerText = number.ToString();
Catalog.AppendChild(file);
XmlElement eCust = xml.CreateElement("Cust");
eCust.InnerText = cust;
file.AppendChild(eCust);
xml.Save(cat);
实际上现在，在玩了代码的其他部分后，似乎
我可以'完全不再使用xml了。一开始，我宣布一个私有的
DataTable tCat，然后当我想将信息加载到数据网格中时，我
说tCat = new DataTable（工作正常之前），但现在我得到相同的
错误信息，如下所示。我不知道发生了什么。
" Martin Honnen"写道：
Actually now, after playing around with other sections of the code, it seems
I can''t use xml at all anymore. At the beginning, I declare a private
DataTable tCat, then later when I want to load the info into a datagrid, I
say tCat = new DataTable (which worked fine before), but now I get the same
error message as below. I have no idea what''s going on.
"Martin Honnen" wrote:
melanieab写道：
melanieab wrote:
我收到错误
system.xml.dll中发生未处理的System.Xml.XmlException类型异常
附加信息：系统错误。
I get the error
An unhandled exception of type ''System.Xml.XmlException'' occurred in
system.xml.dll
Additional information: System error.
string cat = @" C：\Catalog4.xml" ;;
XmlDocument xml = new XmlDocument（）;
xml.Load（cat）;
string cat = @"C:\Catalog4.xml";
XmlDocument xml = new XmlDocument();
xml.Load(cat);
如果标记格式不正确，Load方法会解析XML并抛出异常：
< http://msdn.microsoft.com/library/default.asp?url = /library/en-us/cpref/html/frlrfSystemXmlXmlDocumentClassLoadTopic2.asp>
所以抓住异常例如
试试{
xml.Load（cat）;
}
catch（XmlException e）{
//现在检查e.Message，e.LineNumber，e.LinePosition这里
//找出XML解析器无法解析你的标记的原因，例如
}
-
Martin Honnen --- MVP XML
http： //JavaScript.FAQTs.com/
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