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POmaster reset - clear listview and data from xml file
 

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  1. POmaster reset - clear listview and data from xml file
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    <p>I have got a listview filled with contacts and a XML file where the contacts are stored. </p> <p>I would like to create a button which would act as a kind of Master Reset button. Basically, when the button is pressed the program (data) should reset and act like it was turned on for the first time - no contacts should be there. So, the listview should be cleared and data should be removed from the XML file. </p> <p>This is how my XML file (Contacts.xml) looks like:</p> <pre><code>&lt;People&gt; &lt;Person&gt; &lt;Name&gt;John&lt;/Name&gt; &lt;Hometown&gt;Washington&lt;/Hometown&gt; &lt;Address&gt;231 Main Street&lt;/Address&gt; &lt;Birthday&gt;130299511993682082&lt;/Birthday&gt; &lt;Phone&gt;555-555-555&lt;/Phone&gt; &lt;Email&gt;john@gmail.com&lt;/Email&gt; &lt;AdditionalInfo&gt;Skype: john.123&lt;/AdditionalInfo&gt; &lt;/Person&gt; &lt;/People&gt; </code></pre> <p>... and here is the listview (listView1):</p> <p><img src="https://i.stack.imgur.com/iPZ7v.png" alt="Listview"></p> <p>I know how to clear the listview but I have no idea how to "reset" the XML file. </p> <p>Any ideas?</p> <p>@EDIT: </p> <p>Here is what I have tried, based on your suggestions:</p> <pre><code> void MasterReset() { string path = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData); string phonebook_path = path + "\\Phonebook\\Contacts.xml"; XmlDocument xDoc = new XmlDocument(); xDoc.Load(phonebook_path); XmlNode xNode = xDoc.SelectSingleNode("People"); xNode.InnerXml = ""; xDoc.Save(phonebook_path); listView1.Clear(); } </code></pre> <p>But it does not work, when I load the app again - the contacts are still there. </p>
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    1. USExinta Enea
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    1. COWhy don't you just keep 1 master file, which contains no 'data' (only the raw XML). Then, load it (XDocument.Load) and keep it in memory and save it to a new file, thus keeping the original untouched.
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      1. USDave
    2. COI am really trying hard to understand what did you mean, but have no success doing so. Why would I keep the original file if I want settings to reset? In that way, I would have multiple XML files. Whenever user presses the Master Reset button, it would create a new XML file? Is that what you are saying?
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      1. USExinta Enea
    3. COHave a variable which stores your initial load and save it to a file or keep it in memory
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      1. USliquidsnake786
 

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