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you can loop through the attributes on the node if there are attributes present<br />
<br />
If (yourNode.Attributes.Count<wbr />&gt;0) Then<br />
&nbsp; &nbsp; &nbsp; &nbsp;For atrib As Integer = 0 To yourNode.Attributes.Count<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; If (yourNode.Attributes(atrib<wbr />).Name = &quot;FieldName&quot;) Then<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 'found it<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; x = yourNode.Attributes.GetNam<wbr />edItem(&quot;fi<wbr />eldDoesntE<wbr />xist&quot;).Val<wbr />ue<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 'or &nbsp;x = yourNode.Attributes(atrib)<wbr />.Value<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Exit For ' to exit this for if only needed to find this one attribute<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; End If<br />
&nbsp; &nbsp; &nbsp; &nbsp; Next<br />
End If<br />
<br />
Answer from expert tpwells found at <a href="https://www.experts-exchange.com/questions/22068480/VB-net-XML-node-check-attribute-exists.html" rel="ugc">https://www.experts-exchange.com/questions/22068480/VB-net-XML-node-check-attribute-exists.html</a>
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you can loop through the attributes on the node if there are attributes present

If (yourNode.Attributes.Count>0) Then
       For atrib As Integer = 0 To yourNode.Attributes.Count
            If (yourNode.Attributes(atrib).Name = "FieldName") Then
                'found it
                x = yourNode.Attributes.GetNamedItem("fieldDoesntExist").Value
                'or  x = yourNode.Attributes(atrib).Value
                Exit For ' to exit this for if only needed to find this one attribute
            End If
        Next
End If

Answer from expert tpwells found at https://www.experts-exchange.com/questions/22068480/VB-net-XML-node-check-attribute-exists.html [https://www.experts-exchange.com/questions/22068480/VB-net-XML-node-check-attribute-exists.html]

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See <a href="https://www.experts-exchange.com/questions/22802790/How-to-Find-XML-Node-exists-in-VB-NET.html" rel="ugc">https://www.experts-exchange.com/questions/22802790/How-to-Find-XML-Node-exists-in-VB-NET.html</a>
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See https://www.experts-exchange.com/questions/22802790/How-to-Find-XML-Node-exists-in-VB-NET.html [https://www.experts-exchange.com/questions/22802790/How-to-Find-XML-Node-exists-in-VB-NET.html]

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I have an existing XML file that i need to write values to. &nbsp;How can I determine if a specific node already exists in the file? &nbsp; If the node does not exist how can i create just one specific node with affecting the entire xml document?
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I have an existing XML file that i need to write values to.  How can I determine if a specific node already exists in the file?   If the node does not exist how can i create just one specific node with affecting the entire xml document?

Determine if XML node exists using VB.NET

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,