public void EmptyAppData()
{
string appData = _context.Server.MapPath("~/App_Data");
DirectoryInfo directoryInfo = new DirectoryInfo(appData);
foreach (FileInfo file in directoryInfo.GetFiles())
{
file.Delete();
}
foreach (DirectoryInfo dir in directoryInfo.GetDirectories())
{
dir.Delete(true);
}
SystemConfigurationProvider.ClearCache();
ConfigurationProvider.ClearCache();
}