return a name of a node in C#

hello, I have an xml file and I want to check if the string input in a textbox exist in a node but I dont know what to do.

- For example:
<equal>
<hdd>HardDiskType></hdd>
<hdd>HDD</hdd>

</equal>

a) When I input HDD or HardDiskType in the textbox, the string will match and return true
b) When I input a different string, like "123", it will obviously not match with any string in the tree and therefore return false

A little more difficult problem:
when a) occured, the system will return the name of the father node (in this example it will be "equal")

Thanks in advance.

re: return a name of a node in C#

sorry, I'm not # enough for C#. though I can help with XPath expressions.

regards

re: return a name of a node in C#

well, part of my problem is dealing with xpath (which I'm pretty clueless, since I only know some basic XML), so please help me create a proper xpath :D

re: return a name of a node in C#

explain the xpath problem (or what you want the xpath to do) and we'll get it on.

re: return a name of a node in C#

thanks, for example: i want to create a xpath that return the tag name, uh, like return "hdd" when input HardDiskType or HDD; if possible, return "equal" also

<equal>
<hdd>HardDiskType></hdd>
<hdd>HDD</hdd>
</equal>

re: return a name of a node in C#

let's cut it down into pieces:
local-name(*)
*[text() = 'HDD' or text() = 'HardDiskType']
-- not at the same time (only when you have a node-set as return)
parent::*

now for the homework: put it all together:

regards

re: return a name of a node in C#

What version of the .NET framework are you using?

re: return a name of a node in C#

thanks Dormilich, my problem is now solved.

Im using .Net ver 3.0, included in Visual Studio 2008

by the way, how can I populate the file in a dropdownlist ? I create a xmldatasource, bind it to the dropdownlist, the list did show correct lines accord to the nodes in xml file, but it didnt show the value ("hdd" or "HardDiskType") but "System.blah blah blah instead

re: return a name of a node in C#

I was going to suggest looking into using LINQ to help you but you seem to have solved your problem.

As for the DropDownList displaying the text, it looks like you can provide an XSL to the XmlDataSource to transform the XML data before it is displayed by the DropDownList.

You can also filter the data by setting the XmlDataSource's XPath property to an XPath expression to filter the XML data after the data is loaded and transformed.

-Frinny