Append string to xml file

Question

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Hello. I have an XML:

XML

<connectionStrings>
  <add name="networkingEntities" connectionString="bla"/>
  <add name="networkingEntitiesAdmin" connectionString="blabla"/>
  <add name="FtpConnection" connectionString="blabla" />
</connectionStrings>

I want to add at the begining and at the end "configuration" and "/configuration"

and then in another method to be able to remove those 2.

Can you please help?

I haven't worked with xml never...
Thank you

Tried this but...I get and error :

C#

XmlDocument doc = new XmlDocument();
          doc.Load(filename);
          XmlElement fileElement = doc.CreateElement("configuration");
          XmlElement rootElement = (XmlElement)doc.SelectSingleNode("/Root");
          rootElement.AppendChild(fileElement);

          doc.Save(filename);

Posted 19-Jun-13 4:31am

Luci C

Updated 19-Jun-13 4:32am

v3

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Comments

Mahesh Bailwal 19-Jun-13 10:35am

what error are you getting?

Luci C 19-Jun-13 10:39am

"Object reference not set to an instance of an object." it's because the rootelement doesn't instantiate

If I remove that cast it give me " Cannot implicitly convert xml node to xml element"

1 solution

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Mahesh Bailwal · Accepted Answer · 2013-06-19T04:53:00

Solution 1

As per my understanding you can not add anything in XML file using XmlDocument outside the root element and which is <connectionStrings>. Other way to do that is to use File handling. Below is sample

string xml = File.ReadAllText(filename);
      xml = "<configuration>" + xml + "</configuration>";
      File.WriteAllText(filename, xml);

Posted 19-Jun-13 4:53am

Mahesh Bailwal

Comments

Luci C 19-Jun-13 10:57am

great...it works
Now, how can I remove those?

Mahesh Bailwal 20-Jun-13 1:41am

For removing you can use below code

string xml = File.ReadAllText(filename);
xml = xml.Replace("<configuration>", "").Replace("</configuration>", "");
File.WriteAllText(filename, xml);

Please mark it solved if it worked for you.