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POHow can I append information in an XML file using LINQ in C#?
 

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  1. POHow can I append information in an XML file using LINQ in C#?
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    <p>I'm trying to write some information in an XML file, the structure should be:</p> <pre><code>&lt;Scoreboard&gt; &lt;Match&gt; &lt;name&gt;Dummy&lt;/name&gt; &lt;score&gt;1234&lt;/score&gt; &lt;/Match&gt; &lt;Match&gt; &lt;name&gt;Sample&lt;/name&gt; &lt;score&gt;4567&lt;/score&gt; &lt;/Match&gt; &lt;/Scoreboard&gt; </code></pre> <p>The problem is that I'm only able to write one entry, if I insert another "Match" the old one gets overwritten.</p> <p>For example, if I have:</p> <pre><code>&lt;Scoreboard&gt; &lt;Match&gt; &lt;name&gt;Dummy&lt;/name&gt; &lt;score&gt;1234&lt;/score&gt; &lt;/Match&gt; &lt;/Scoreboard&gt; </code></pre> <p>And then I want to add another entry the old one will be deleted and I'll only have the new one, for example:</p> <pre><code>&lt;Scoreboard&gt; &lt;Match&gt; &lt;name&gt;Sample&lt;/name&gt; &lt;score&gt;4567&lt;/score&gt; &lt;/Match&gt; &lt;/Scoreboard&gt; </code></pre> <p>I would know how can I write new entries without overwriting the old ones.</p> <p>Here's my code:</p> <pre><code>using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication()) { //If file doesn't exist, then create it. if (!isoStore.FileExists("scoreboard.xml")) { XDocument doc = new XDocument(new XElement("Scoreboard")); using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream("scoreboard.xml", System.IO.FileMode.Create, isoStore)) { doc.Save(isoStream); } } else { //Else open it and write a new element which is a child of Scoreboard using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream("scoreboard.xml", System.IO.FileMode.Open, isoStore)) { XDocument doc1 = XDocument.Load(isoStream); var newElement = new XElement("Match", new XElement("name", VarGlobal.Name), new XElement("score", VarGlobal.Score)); doc1.Element("Scoreboard").Add(newElement); Messaggio.Text = doc1.ToString(); } } } </code></pre>
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    1. PTQuestion
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    1. USFabrizio Arpaia
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      1. POHow can I append information in an XML file using LINQ in C#?
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      1. VTUpMod
    1. COIf the file exists, you're loading it and appending a new value - but then you're not saving it again. So I don't see how the file contents will be replaced at all...
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      1. POHow can I append information in an XML file using LINQ in C#?
      1. USJon Skeet
    2. COBut if I don't save It then why do I see the new value when I load it again? And how should I save it?
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      1. POHow can I append information in an XML file using LINQ in C#?
      1. USFabrizio Arpaia
    3. COIf you don't save it you *won't* see the new value. You just won't. I suspect the problem is in `isoStore.FileExists`. You should be able to see that by debugging.
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      1. POHow can I append information in an XML file using LINQ in C#?
      1. USJon Skeet
 

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