//初始化 访问次数筛选器
void initFilter()
{
string path = filterFile;
visitFilter = new VisitFilter();
FileInfo fi = new FileInfo(path);
FileInfo[] files = directoryInfo.GetFiles();
List <string> names = new List <string>();
foreach (FileInfo file in files)
{
names.Add(file.Name);
}
if (fi.Exists)
{
string str = ReadData(path);
visitFilter.Deserialize(str, names);
}
else
{
visitFilter.Deserialize("[]", names);
}
}