Updating XML Using Linq

[=?Utf-8?B?VGVycmFuY2U=?=]

I'm trying to update an xml file but seem to be having problems. My xml file
is in the following format:
<main>
<site name="mysite" username="user" password="pass" />
<site ... />
</main>
The code I have is:
XDocument mydoc =
XDocument.Load( this.txtFilePat h.Text,LoadOpti ons.PreserveWhi tespace);

XElement myElem = mydoc.Elements( "site").Whe re(e =(string)
e.Attribute("na me") == fieldArray[0]).FirstOrDefaul t();

if (myElem == null) Console.WriteLi ne("myElem is null");

//myElem.SetAttri buteValue("name ",this.txtSite. Text);
myElem.Attribut e("name").Val ue = this.txtSite.Te xt;
//myElem.SetAttri buteValue("logi n", this.txtUsernam e.Text);
myElem.Attribut e("login").Valu e = this.txtUsernam e.Text;
//myElem.SetAttri buteValue("pass word", this.txtPasswor d.Text);
myElem.Attribut e("password").V alue = this.txtPasswor d.Text;

It doesn't seem to be working. myElem variable seems to be null. Any
suggestions?
--
TC

[Martin Honnen]

Re: Updating XML Using Linq

Terrance wrote:

I'm trying to update an xml file but seem to be having problems. My xml file
is in the following format:
<main>
<site name="mysite" username="user" password="pass" />
<site ... />
</main>
The code I have is:
XDocument mydoc =
XDocument.Load( this.txtFilePat h.Text,LoadOpti ons.PreserveWhi tespace);
>
XElement myElem = mydoc.Elements( "site").Whe re(e =(string)
e.Attribute("na me") == fieldArray[0]).FirstOrDefaul t();
>
if (myElem == null) Console.WriteLi ne("myElem is null");
>
//myElem.SetAttri buteValue("name ",this.txtSite. Text);
myElem.Attribut e("name").Val ue = this.txtSite.Te xt;
//myElem.SetAttri buteValue("logi n", this.txtUsernam e.Text);
myElem.Attribut e("login").Valu e = this.txtUsernam e.Text;
//myElem.SetAttri buteValue("pass word", this.txtPasswor d.Text);
myElem.Attribut e("password").V alue = this.txtPasswor d.Text;
>
It doesn't seem to be working. myElem variable seems to be null. Any
suggestions?

The 'site' elements are descendants of the XDocument node so either use
mydoc.Descendan ts("site")
or access the root element first
mydoc.Root.Elem ents("site")

--

Martin Honnen --- MVP XML

http://JavaScript.FAQTs.com/

[=?Utf-8?B?VGVycmFuY2U=?=]

RE: Updating XML Using Linq

Thanks a bunch. That worked.
--
TC


"Terrance" wrote:

I'm trying to update an xml file but seem to be having problems. My xml file
is in the following format:
<main>
<site name="mysite" username="user" password="pass" />
<site ... />
</main>
The code I have is:
XDocument mydoc =
XDocument.Load( this.txtFilePat h.Text,LoadOpti ons.PreserveWhi tespace);
>
XElement myElem = mydoc.Elements( "site").Whe re(e =(string)
e.Attribute("na me") == fieldArray[0]).FirstOrDefaul t();
>
if (myElem == null) Console.WriteLi ne("myElem is null");
>
//myElem.SetAttri buteValue("name ",this.txtSite. Text);
myElem.Attribut e("name").Val ue = this.txtSite.Te xt;
//myElem.SetAttri buteValue("logi n", this.txtUsernam e.Text);
myElem.Attribut e("login").Valu e = this.txtUsernam e.Text;
//myElem.SetAttri buteValue("pass word", this.txtPasswor d.Text);
myElem.Attribut e("password").V alue = this.txtPasswor d.Text;
>
It doesn't seem to be working. myElem variable seems to be null. Any
suggestions?
--
TC