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