使用C#可以测试文件上是否存在锁定

using System;
using System.IO;

public class FileLockChecker
{
    public static bool IsFileLocked(string filePath)
    {
        FileStream stream = null;

        try
        {
            stream = File.Open(filePath, FileMode.Open, FileAccess.ReadWrite, FileShare.None);
        }
        catch (IOException)
        {
            return true;
        }
        finally
        {
            if (stream != null)
                stream.Close();
        }

        return false;
    }
}