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    <p>Here is the code I use to save and load lists of objects from isolated storage. </p> <pre><code>public class IsoStoreHelper { private static IsolatedStorageFile _isoStore; public static IsolatedStorageFile IsoStore { get { return _isoStore ?? (_isoStore = IsolatedStorageFile.GetUserStoreForApplication()); } } public static void SaveList&lt;T&gt;(string folderName, string dataName, ObservableCollection&lt;T&gt; dataList) where T : class { if (!IsoStore.DirectoryExists(folderName)) { IsoStore.CreateDirectory(folderName); } string fileStreamName = string.Format("{0}\\{1}.dat", folderName, dataName); using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(fileStreamName, FileMode.Create, IsoStore)) { DataContractSerializer dcs = new DataContractSerializer(typeof(ObservableCollection&lt;T&gt;)); dcs.WriteObject(stream, dataList); } } public static ObservableCollection&lt;T&gt; LoadList&lt;T&gt;(string folderName, string dataName) where T : class { ObservableCollection&lt;T&gt; retval = new ObservableCollection&lt;T&gt;(); if (!IsoStore.DirectoryExists(folderName)) { IsoStore.CreateDirectory(folderName); } string fileStreamName = string.Format("{0}\\{1}.dat", folderName, dataName); using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(fileStreamName, FileMode.OpenOrCreate, IsoStore)) { if (stream.Length &gt; 0) { DataContractSerializer dcs = new DataContractSerializer(typeof(ObservableCollection&lt;T&gt;)); retval = dcs.ReadObject(stream) as ObservableCollection&lt;T&gt;; } } return retval; } } </code></pre>
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    1. POproblem Storing a list of Objects in Isolated Storage
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    1. USSteve Chadbourne
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    1. COThanks for the example Steve, but I am getting this error when I implement it: "Operation not permitted on IsolatedStorageFileStream" I think it is how I have my folderName expressed. here is my load usage: testList = IsoStoreHelper.LoadList<DrinkSesh>("Storage/", "Storage");
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    2. CORemove the slash from the end of the first parameter. If that doesn't work try changing the name Storage to something else eg ("Session", "DrinkSesh")
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      1. USSteve Chadbourne
    3. COI have tried that however I still get the error. It seems to only fail with the load method not the save. I still am confused on where to declare my list. right now it is just at the top of the App class like so: public ObservableCollection<DrinkSesh> testList=new ObservableCollection<DrinkSesh>(); I'm sorry for my stupidity with silverlight I just feel like I am doing something fundamentally wrong here because it will create new instances of the list each time it opens or activates the app am I wrong?
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