37 lines
1.1 KiB
C#
37 lines
1.1 KiB
C#
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using System.Runtime.InteropServices;
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namespace Falcon.SugarApi.Windows
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{
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/// <summary>
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/// 文件操作扩展
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/// </summary>
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public static class FileExtend
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{
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[DllImport("kernel32.dll")]
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private static extern IntPtr _lopen(string lpPathName,int iReadWrite);
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[DllImport("kernel32.dll")]
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private static extern bool CloseHandle(IntPtr hObject);
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/// <summary>
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/// 判断文件是否打开，并可选是否关闭
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/// </summary>
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/// <param name="path">文件路径</param>
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/// <param name="close">True关闭文件，不关闭。默认不关闭</param>
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/// <returns>True文件打开，False文件没有打开</returns>
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public static bool IsOpen(this string path,bool close = false) {
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if(!File.Exists(path)) {
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return false;
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}
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var handle = _lopen(path,2|0x40);
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if(handle==new IntPtr(-1)) {
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return true;
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}
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if(close) {
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CloseHandle(handle);
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}
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return false;
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}
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}
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}
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