如下代码，建立一个全局变量txt来储存文本文件word.txt的内容，然后建立一个监视器来监视word.txt的改变，如果word.txt的内容改变后重置txt变量的值。运行程序后，如果我将word.txt的内容填充到100MB,内存占用自然增高，可是之后我将word.txt的内容改为仅仅一个字符，内存占用还是不会下来，反而会多多少少增加一些。
public class Program
{
public static string txt = "aaa";
static void Main()
{
FileSystemWatcher fileSystemWatcher = new FileSystemWatcher(@"D:\ConsoleApplication1", "word.txt");
fileSystemWatcher.Changed += new FileSystemEventHandler(ReloadHandler);
fileSystemWatcher.NotifyFilter = NotifyFilters.Size;
fileSystemWatcher.EnableRaisingEvents = true;
Console.ReadLine();
}
private static void ReloadHandler(object sender, FileSystemEventArgs e)
{
ReloadTxtContent();
}
private static void ReloadTxtContent()
{
txt = null;
using ( FileStream fs = new FileStream(@"D:\ConsoleApplication1\word.txt", FileMode.Open, FileAccess.Read, FileShare.ReadWrite) )
{
using ( StreamReader sr = new StreamReader(fs, System.Text.Encoding.Default) )
{
txt = sr.ReadToEnd();
}
}
}
}
难道全局静态变量反复的赋值会让内存占用持续增加？一直降不下来？
