static void Import(string file, string folder)
{
ErpFile erp = new ErpFile();
erp.Read(File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read));
erp.ProgressStatus = new Progress <string>(status =>
{
_stringBuilder.Append(status);
});
Task.Run(() => erp.Import(Directory.GetFiles(folder, "*", SearchOption.AllDirectories))).Wait();
Task.Run(() => erp.Write(File.Open(file, FileMode.Create, FileAccess.Write, FileShare.Read))).Wait();
}
