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dotnet xml
group:Error message when retriving a string from my xml file in C#.net a
dotnet xml:
message at run time of : XML.XPATH.XPATHEXCEPTION : Namespace Manager or XSLTContext needed. This query has a prefix, variable or user defined function. Can someone see what I'm doing wrong? Thanks, Alpha private XPathDocument unityMessages = new XPathDocument("UnityMessages.xml"); unityMsgNavigator = unityMessages.CreateNavigator(); string query = @"/trans-unit[@id=""m1""]/target[@xml:lang=""fr""]"; XPathExpression queryM1 = unityMsgNavigator.Compile(query); m1 = (string)unityMsgNavigator.Evaluate(queryM1); Here is part of the content from my xml file: <?xml version="1.0" encoding="utf-8" ?> <xliff version="1.1"> <trans-unit id="m1"> <source xml:lang="en-us">Error populating the children nodes of the selected node.</source> <target xml:lang="fr">Translation of "Vous le vou coucher avec moi sesua?"</target> </trans-unit> </xliff>
This is what I have in the code but it's still not diaplaying any messages.
However, I did get rid of that Name Sapce Manager Error message though. Thank you. Can you please have a look again at my code and tell me what I'm doing wrong here. Thanks a million. I'm trying to set up a XML file for capturing all messages string for futuer localization usages. Thanks, Alpha try { unityMessages = new XPathDocument(@"C:\PROJECTS\PPGLOBAL\UnityMessages.xml"); unityMsgNavigator = unityMessages.CreateNavigator(); string query = @"/trans-unit[@id=""m1""]/target[lang(""fr"")]"; XPathExpression queryM1 = unityMsgNavigator.Compile(query); XPathNodeIterator ni = (XPathNodeIterator)unityMsgNavigator.Evaluate(queryM1); while (ni.MoveNext()) { MessageBox.Show(ni.Current.ToString()); } This is what I have in the xml file: <?xml version="1.0" encoding="utf-8" ?> <xliff version="1.1"> <trans-unit id="m1"> <source xml:lang="en-us">Error populating the children nodes of the selected node.</source> <target xml:lang="fr">Translation of "Vous le vou coucher avec moi sesua?"</target> </trans-unit> </xliff> [quoted text, click to view] "Martin Honnen" wrote:
> > > Alpha wrote: > > > I created the following code in my C# program but it's giving me error > > message at run time of : > > > > XML.XPATH.XPATHEXCEPTION : Namespace Manager or XSLTContext needed. This > > query has a prefix, variable or user defined function. > > > > string query = @"/trans-unit[@id=""m1""]/target[@xml:lang=""fr""]"; > > You are using the prefix xml in the attribute name xml:lang without > using a namespace manager. > Either use a namespace manager or simply do > string query = @"/trans-unit[@id=""m1""]/target[lang(""fr"")]" > > -- > > Martin Honnen --- MVP XML > http://JavaScript.FAQTs.com/
Yes, thank you so very much. It is working now. I just have one more
question. Why doesn't this line of code worked? string m1 = (string)unityMsgNavigator.Evaluate(queryM1); I thought the Evalute method returns the typed result but I'm getting messages about it can't cast the type XPathNodeIterator to string. Thanks, Alpha [quoted text, click to view] "Martin Honnen" wrote:
> > > Alpha wrote: > > > > string query = > > @"/trans-unit[@id=""m1""]/target[lang(""fr"")]"; > > > > <xliff version="1.1"> > > <trans-unit id="m1"> > > <source xml:lang="en-us">Error populating the children nodes of the > > selected node.</source> > > <target xml:lang="fr">Translation of "Vous le vou coucher avec moi > > sesua?"</target> > > </trans-unit> > > </xliff> > > You want this XPath expression (well C# string literal with an XPath > expression) then > @"/xliff/trans-unit[@id=""m1""]/target[lang(""fr"")]" > > -- > > Martin Honnen --- MVP XML > http://JavaScript.FAQTs.com/
[quoted text, click to view] Alpha wrote: > I created the following code in my C# program but it's giving me error > message at run time of : > > XML.XPATH.XPATHEXCEPTION : Namespace Manager or XSLTContext needed. This > query has a prefix, variable or user defined function. [quoted text, click to view] > string query = @"/trans-unit[@id=""m1""]/target[@xml:lang=""fr""]"; You are using the prefix xml in the attribute name xml:lang without using a namespace manager. Either use a namespace manager or simply do string query = @"/trans-unit[@id=""m1""]/target[lang(""fr"")]" -- Martin Honnen --- MVP XML
[quoted text, click to view] Alpha wrote: [quoted text, click to view] > string query = > @"/trans-unit[@id=""m1""]/target[lang(""fr"")]"; [quoted text, click to view] > <xliff version="1.1"> > <trans-unit id="m1"> > <source xml:lang="en-us">Error populating the children nodes of the > selected node.</source> > <target xml:lang="fr">Translation of "Vous le vou coucher avec moi > sesua?"</target> > </trans-unit> > </xliff> You want this XPath expression (well C# string literal with an XPath expression) then @"/xliff/trans-unit[@id=""m1""]/target[lang(""fr"")]" -- Martin Honnen --- MVP XML
Martin
"XPath expressions can be of four types, a string or a boolean or a=20 number or a node set." Is that only for Xpath 1.0. 2.0 introduces support for the XML Schema primitive types, which = immediately gives the user access to 19 simple types, including dates, = years, months, URIs and others? Aaron=20 [quoted text, click to view] "Martin Honnen" <mahotrash@yahoo.de> wrote in message =
news:uEgrcxQGGHA.1288@TK2MSFTNGP09.phx.gbl... >=20 >=20 > Alpha wrote: >=20 > > I just have one more=20 > > question. Why doesn't this line of code worked? > > string m1 =3D = (string)unityMsgNavigator.Evaluate(queryM1); > > I thought the Evalute method returns the typed result but I'm = getting=20 > > messages about it can't cast the type XPathNodeIterator to string. >=20 > XPath expressions can be of four types, a string or a boolean or a=20 > number or a node set. Most XPath expressions used evaluate to a node = set=20 > and will be treated as an XPathNodeIterator then in .NET code outside = of=20 > XPath. > If you have an XPath expression explictly returning e.g. a number for=20 > instance > double count =3D (double)navigator.Evaluate("count(//*)") > then such a cast works. > To explicity return a string you could do e.g. > string name =3D (string)navigator.Evaluate("local-name(/*)") > or > string someValue =3D = (string)navigator.Evaluate("string(/root/element)") >=20 > --=20 >=20 > Martin Honnen --- MVP XML
[quoted text, click to view] Alpha wrote: > I just have one more > question. Why doesn't this line of code worked? > string m1 = (string)unityMsgNavigator.Evaluate(queryM1); > I thought the Evalute method returns the typed result but I'm getting > messages about it can't cast the type XPathNodeIterator to string. XPath expressions can be of four types, a string or a boolean or a number or a node set. Most XPath expressions used evaluate to a node set and will be treated as an XPathNodeIterator then in .NET code outside of XPath. If you have an XPath expression explictly returning e.g. a number for instance double count = (double)navigator.Evaluate("count(//*)") then such a cast works. To explicity return a string you could do e.g. string name = (string)navigator.Evaluate("local-name(/*)") or string someValue = (string)navigator.Evaluate("string(/root/element)") -- Martin Honnen --- MVP XML
[quoted text, click to view] Aaron wrote: [quoted text, click to view] > "XPath expressions can be of four types, a string or a boolean or a > number or a node set." > Is that only for Xpath 1.0. Yes, and my answer was in a post about a specific problem with using XPath from .NET code where .NET only supports XPath 1.0 so I don't see why it should have been more generic. [quoted text, click to view] > 2.0 introduces support for the XML Schema primitive types, which > immediately gives the user access to 19 simple types, including dates, > years, months, URIs and others? XPath 2.0 and its data model indeed tries to (re)use the W3C schema data types but that does not help when using the XPath API in current .NET versions. -- Martin Honnen --- MVP XML
Hi Martin,
I tried the following code but I got an error message about illegal token in the string. I also tried the 2nd string type you suggested and got the same error. Can you have a look and let me know how I should correct this? Thank you, Alpha string query = @"xliff/trans-unit[@id=""m1""]/target[lang(""fr"")](/root/element)"; string query = @"xliff/trans-unit[@id=""m1""]/target[lang(""fr"")](/*)"; XPathExpression queryM1 = unityMsgNavigator.Compile(query); m1 = (string)unityMsgNavigator.Evaluate(queryM1); [quoted text, click to view] "Martin Honnen" wrote:
> > > Alpha wrote: > > > I just have one more > > question. Why doesn't this line of code worked? > > string m1 = (string)unityMsgNavigator.Evaluate(queryM1); > > I thought the Evalute method returns the typed result but I'm getting > > messages about it can't cast the type XPathNodeIterator to string. > > XPath expressions can be of four types, a string or a boolean or a > number or a node set. Most XPath expressions used evaluate to a node set > and will be treated as an XPathNodeIterator then in .NET code outside of > XPath. > If you have an XPath expression explictly returning e.g. a number for > instance > double count = (double)navigator.Evaluate("count(//*)") > then such a cast works. > To explicity return a string you could do e.g. > string name = (string)navigator.Evaluate("local-name(/*)") > or > string someValue = (string)navigator.Evaluate("string(/root/element)") > > -- > > Martin Honnen --- MVP XML > http://JavaScript.FAQTs.com/
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