Namespaces in C# with LINQ to XML

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70ca7967-c5ba-42bf-ba70-71a063538ae0 0.01 Oh minus one told the Anglican Microsoft in the UK and this is one of a series of short videos about new technology coming with visual studio covering all this August 10.01 will be the next version of visual studio follows on from visual studio present five and the technology was a rare here is called the language integrated query or link to 20.01 XML and in a nutshell when I gives you is in your XML API at a valuation of API we place the language integrated query pattern that we see in various 30.01 places in visual studio August that it is one of a number of videos are and if you ve not seen anything around this technology you might want to look at 40.01 either the creating of a querying video before this one s a five minutes or so to look at how we deal with XML namespace is when a plane listening to 50.01 XML in the seizure language for this video and working with visual studio covering Walker since the March technology preview worthwhile is the latest version road at the time 60.01 Video and all we got here is a console application without reference to system to novel length it is actually application with 70.01 the previous video women talk about creating XML and we ve got a blank canvas at the moment in terms of the 80.01 programme that we can write so in a previous session with a downgrade is in exile with something like ex elements that 90.01 collaborative was the US a lawful route onto that another level at the child element of a child and then relented safe 100.01 that to someone file system and then we went and you did with i e and listings of his XML chicken consumer 110.00999999999999 in our death of his XML well escaped in predecessors was Harry control inspectorsis in XML design graduate potentially elements that 120.01 Have batteries even have the same names and is an important part of dealing with XML and we can t just look whereas pretend it doesn t 130.01 exist even though somebody might be nice so in dealing with the link to XML API when we come to present something to a constructor like this 140.01 one next element if we look at the different options we got him the silicon bassinet Alan Annex name annexed name and some relatives and yet they 150.01 get away with passing this strange and it is because there is an implicit conversion between history and an ex name but by rights we should really 160.01 be passing them and explain here is little evidence if we can make ourselves an accidental call it my name and there is no constructor you can 170.01 call so what you ll be needing to do is explained on get and you can passing one of two things were about as a local name 180.01 So AT the main route and opposite thename let s say my name s face Karl and is a passing route here at Hezbollah s girl 190.01 and asked my name let s got onto one wonders the neatness was built that is run and will see now that the root element is 200.01 now in theyou are in mydesk and that s also been made to default names with document and the child element is now in noeveryone to 210.01 the child element and in that samethen again we could use her ex named object flat so I suppose we can go ahead and say ex 220.01 name trial the name he calls us do a similar thing here and wouldn t give us the name of child and then that s got 230.01 to be a name that we use there will be child name and we should ever since both in the samenow it s been 240.01 A tea e commerce with the document and at the child is in the same defaultthat the retirement is within typing in ex name 250.01 all over the place like this is a little bit painful so that a short cut version of doing this and presented away without 260.01 works is that rather than typing in dose to ex name don t get sucked their weekly news is short and syntax which looks 270.01 like this you can say we want you are in my namespace calm and then will have route and whether there will have another 280.01 element child and that is you are in my calm and will have child in their and will go out and is built that 290.01 stuff will run at it again has the same effect as result before we get default namespace within athe child is also in 300.01 A default namespace so when we are creating content weirs linked to expel when we are querying content victim into XML we can 310.01 authorise the use of full ex name incantations which are secular with excellent get all we can use one of these shortened names 320.01 am worried society put it all into a single strength and of course you like a bit fed up with doing this at 330.01 some plants are what you can do is define a string in the sense of saying myequals less distinguished piece of the declaration 340.01 copy that a site in their and this would then become a menace floss roots and this one will become M S lost 350.01 child long as you were doing the same thing were just slightly less typing to do will add to keep typingin all the way through 360.01 What you may be right that the function that just made elements of a certain name space for you am 370.01 rather anti divingand he can shut it down the slant of it that way analysis to show that we can 380.01 do a content with multipleas with so all of your default namespace are it will have an element that element 390.01 can come from your own 1 karma route and into their open another element that element can come from you 400.01 N2 2 com for a child and that it is eg the page is that yet another has multiple namespace 410.01 is a defame it is choosing not to use prefixes at the races it s just genuinely for encountersanelementlikethissoifwecareaboutnamespaceisameetingisanotherclassicalex namespaceex namespaceheremusthaveoneoftheseifyoulookatitagainwasnoconstructfromthesceneitis 420.01 Is not that there is a value for nothere s a value to the XMLif you like and the XML and S and 430.01 what was it he was axed yet will give this you are in 1 calm and they will have another one ex namespace 440.01 now a nest to legal sex net your own to calm and then we can do is emigrate element is just the route 450.01 first we can give it the namespace class the element name and we can go ahead and do that but then we can 460.01 do is put a new attribute on here ex attribute this is a strange ready to think myis that this is the way 470.01 it seems to work and onto that what we can do is give it ex namespace XML and S and can add to the 480.01 At the prefix of it argues that his VFX is prefix and the value of that and particular attribute is going to be namespace as an 490.01 air software so a reading element goal route that lives in the Ennis namespace using the prefix p Fx to refer to thatand then what am 500.01 they let us go ahead and do that and see how that looks less as runner and was soon evident that the root element from theyou 510.01 are in 1 calm with the prefix p Fx and again everyone were another element of that namespace is that you element here will do a 520.01 restless child thrown at Inverness five a man was seen as a child gets the same prefix for that particular namespace and it wants to move 530.01 it into a new namespace then I would be a matter of having a restless child here but they would have to pass a little out of 540.01 At the attribute will be theXML and S Klos was recalled as prefects at school that done the effects to another ofto register the wrong 550.01 thing second was a rigidly to measure this iswell present on their no floppy Fx route with the effectiveness to your own wonder com and 560.01 the effects to child work if it is to reversed your into com and you see how this is going fan is a little bit 570.01 less intuitive than some of the things within the API but we by default and not really presented with prefixes this is only the truly 580.01 care about prefixes and you really shouldn t have a positive ex lover I can appreciate that might be times when you actually want to 590.01 take some control over the prefixes of the new cigarette analysis output just put it on at a senior wishing to new classes explain the next 600.01 Or creating parts of XML documents are elements in anchovies and so on reality giving them instances of ex name but we can just has to illustrate many 610.01 converts it naturally into annex name risotto that we can use another colour syntax will report beinto daily basis and that would controlfor us and then we saw 620.01 that if prefixes really were important to us with your supplier of the ex namespace Klass and take control of the prefixes them in use within the excellent 630.01 document is well generally if you re querying you perhaps don t care too much about prefixes that are used and sometimes if you generating content packaging care 640.01 what the prefixes the end of being used and you can control and the weather was seen and within the session now widely both lots more informational link 650.01 up while there is a great developer centre upon and as the air in the URL is on screen and you will find information there about the 660.01 Aspects of link including failing to excel at the good lochside of the 670.01 linking action net have certainly been read by the number of articles from 680.01 our site at a great to be aware of if you re interested 690.01 in link out if you are to ask the questions that we saw 700.01 in the video feel free to mail me my addresses their on screen 710.01 and thank you for listening out to catch you at future events all with future