Regular Expression To Match XML String is having start and end tags in C#

Question

I want to check a xml string, wether that has the start and end specified tag in C#. The xml string is bellow.

string xml=@"<iq from='someone' to='someone' id='1234' type='result'><query xmlns='jabber:iq:hello' type='hello'><question questionid='17' postedon='1376148890' editedon='1376150411' categoryid='1034' categoryname='Computer' postedby='mohan' viewstatus='0' availability='offline'>Hello</question></query></iq>";

<iq from='someone' to='someone' id='1234' type='result'>
<query xmlns='jabber:iq:hello' type='hello'>
<question questionid='17' postedon='1376148890' editedon='1376150411' categoryid='1034' categoryname='Computer' postedby='mohan' viewstatus='0' availability='offline'>Hello</question>
</query>
</iq>

I have been using the following regex format to check but it doesn't help me

var regexForIq = new Regex(@"<iq(.*?)</iq>", RegexOptions.IgnoreCase);
var iqMatch = regexForIq.Match(_responseData);

Thanks in advance.

Answer 1

Why don't you use a real xml parser? http://msdn.microsoft.com/en-us/library/bb387061.aspx

var iq = XElement.Parse(xml).DescendantsAndSelf("iq").FirstOrDefault();
if (iq != null)
{
}