摘要:
C# 判断(Excel)文件是否已经打开 using System.IO; using System.Runtime.InteropServices; [DllImport("kernel32.dll")] public static extern IntPtr _lopen(string lpPa 阅读全文
摘要:
using System; using System.Collections.Generic; using System.Linq; using System.Threading; using System.Threading.Tasks; namespace ConsoleApp1 { class 阅读全文