本地存储

public void SaveToIsolatedStorage(string pKey, string pValue)
{   
    IsolatedStorageSettings vAppSettings = IsolatedStorageSettings.ApplicationSettings;

    if(vAppSettings.Contains(pKey))
    {
        vAppSettings[pKey] = pValue;
    }
    else
    {
        vAppSettings.Add(pKey, pValue);
    }

    vAppSettings.Save();
}

public string ReadFromIsolatedStorage(string pKey)
{
    string vRtn = string.Empty;

    IsolatedStorageSettings vAppSettings = IsolatedStorageSettings.ApplicationSettings;

    if(vAppSettings.Contains(pKey))
    {
        vRtn = vAppSettings[pKey];
    }

    return vRtn;
}