什么是语法上的 Directory.GetFiles设置的多个文件扩展名作为
?例如过滤掉文件的的.aspx 和的.ascx 的扩展。是searchPattern
()
// TODO:设置该字符串'是searchPattern'只与获取文件
//扩展'.ASPX'和'的.ascx。
VAR filteredFiles = Directory.GetFiles(路径,是searchPattern);
更新: LINQ是不是一种选择,它必须是一个是searchPattern
传入的GetFiles
,在这个问题中指定。
我相信没有开箱即用的解决方案,这就是Directory.GetFiles方法的限制。
这是相当容易的,虽然写你自己的方法,这里是一个example.
在code可能是:
///<总结>
///从符合给定的过滤器给定文件夹返回的文件名
///< /总结>
///< PARAM NAME =SourceFolder>文件夹与文件检索和LT; /参数>
///< PARAM NAME =过滤器>由分隔的多个文件过滤器|人物< /参数>
///< PARAM NAME =searchOption> File.IO.SearchOption,
///可能是AllDirectories或TopDirectoryOnly< /参数>
///<返回>的FileInfo对象的数组的文件名是presents集合
///满足给定的过滤器和LT; /回报>
公共字符串[]的GetFiles(字符串SourceFolder,串过滤器,
System.IO.SearchOption searchOption)
{
// ArrayList的将持有的所有文件名
ArrayList的alFiles =新的ArrayList();
//创建过滤字符串数组
字符串[] MultipleFilters = Filter.Split('|');
//为每个过滤器找到mathing文件名
的foreach(在MultipleFilters字符串的FileFilter)
{
//添加发现文件名数组列表
alFiles.AddRange(Directory.GetFiles(SourceFolder,一个FileFilter,searchOption));
}
//返回有关文件名的字符串数组
返回(串[])alFiles.ToArray(typeof运算(字符串));
}
What is the syntax for setting multiple file-extensions as searchPattern
on Directory.GetFiles()
? For example filtering out files with .aspx and .ascx extensions.
// TODO: Set the string 'searchPattern' to only get files with
// the extension '.aspx' and '.ascx'.
var filteredFiles = Directory.GetFiles(path, searchPattern);
Update: LINQ is not an option, it has to be a searchPattern
passed into GetFiles
, as specified in the question.
I believe there is no "out of the box" solution, that's a limitation of the Directory.GetFiles method.
It's fairly easy to write your own method though, here is an example.
The code could be:
/// <summary>
/// Returns file names from given folder that comply to given filters
/// </summary>
/// <param name="SourceFolder">Folder with files to retrieve</param>
/// <param name="Filter">Multiple file filters separated by | character</param>
/// <param name="searchOption">File.IO.SearchOption,
/// could be AllDirectories or TopDirectoryOnly</param>
/// <returns>Array of FileInfo objects that presents collection of file names that
/// meet given filter</returns>
public string[] getFiles(string SourceFolder, string Filter,
System.IO.SearchOption searchOption)
{
// ArrayList will hold all file names
ArrayList alFiles = new ArrayList();
// Create an array of filter string
string[] MultipleFilters = Filter.Split('|');
// for each filter find mathing file names
foreach (string FileFilter in MultipleFilters)
{
// add found file names to array list
alFiles.AddRange(Directory.GetFiles(SourceFolder, FileFilter, searchOption));
}
// returns string array of relevant file names
return (string[])alFiles.ToArray(typeof(string));
}