Save/Remove Docking

I''ve have tried to save the docking using isloatedstorage. It works fine. I can reload the docking state from isolatedstorage. Now I want to remove the state from the isolatedstorage using the same ways as I retreive the docking state but only remove the one I want. try { IsolatedStorageFile isoFile = IsolatedStorageFile.GetMachineStoreForDomain(); IEnumerator allFiles = EnumerateTheStore(isoFile); while (allFiles.MoveNext()) { IsolatedStorageFile store = (IsolatedStorageFile)allFiles.Current; store.DeleteFile("uds.RTGenerationForm.syncfusion.dockingstate.Manager2.bin"); //string[] files = store.GetFileNames("*" ); //foreach (string file in files) //{ // Console.WriteLine(file); //} } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } But it always failed to delete it from the isolated storage. Also I could not find the file under C:\Documents and Settings\myname\Application Data\IsolatedStorage do you know why? Is it a bug that I am supposed to submit an instance. Thanks

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