[RESOLVED] Help with XmlNode

hi guys! Help please..I have XmlNode named rowNode and it has value

Quote:

---

<z:row
ows_fRecurrence=\"0\"
ows_LinkTitle=\"BAC Meeting\"
ows_EventDate=\"2007-08-14 08:30:00\"
ows_Location=\"rghergrege\"
ows_Alarm=\"2007-08-14 08:25:00\"
ows_AlarmMemberChoice=\"ALL\"
ows_Attachments=\"0\"
ows_Attachment=\", \"
ows_Title=\"BAC Meeting\"
ows_ID=\"105\"
ows_owshiddenversion=\"4\"

xmlns:z=\"#RowsetSchema\" />"

---

but sometime it can have value like this

Quote:

---

<z:row
ows_fRecurrence=\"0\"
ows_LinkTitle=\"BAC Meeting\"
ows_EventDate=\"2007-08-14 08:30:00\"
ows_Alarm=\"2007-08-14 08:25:00\"
ows_AlarmMemberChoice=\"ALL\"
ows_Attachments=\"0\"
ows_Attachment=\", \"
ows_Title=\"BAC Meeting\"
ows_ID=\"105\"
ows_owshiddenversion=\"5\"
xmlns:z=\"#RowsetSchema\" />"

---

notice that "ows_Location" in the second value does not exist. My question is how will check if "ows_Location" exist in the value? Thanks in advance!

XPath to the rescue! You can check your node to see if it contains that attribute quite easily with the correct XPath.

c# Code:

XmlDocument xd = new XmlDocument();
xd.Load(@"c:\test.xml");
 
XmlNode nod = xd.SelectSingleNode("/main/z:row/@ows_LinkTitle");
 
if (nod != null)
{
    MessageBox.Show("This node has the attribute.");
}
else
{
    MessageBox.Show("This node does not have the attribute.");
}

Quote:

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Originally Posted by daimous

hi guys! Help please..I have XmlNode named rowNode ...

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If you already have an instance of the XmlNode, then it can be done really easy. (XmlNode itself is an abstract class, so I assume it's an XmlElement instance you have, which inherits from the XmlNode class.)

Code:

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XmlElement node = ... ; //you already have this one I assume
XmlAttribute attribute = node.Attributes["ows_Location"];
bool attributeExists = (attribute != null);

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If you don't have an XmlElement after all then, you just need to cast it first, probably.

Code:

---

XmlNode someXmlNode = ...; //you had this one already
XmlElement node = (XmlElement)someXmlNode;

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I hope this is the answer you expected. :) Good luck with your projects either way!

THanks a lot guys! It really helps me a lot..