多文件扩展名是searchPattern的System.IO.Directory.GetFiles [英] Multiple file-extensions searchPattern for System.IO.Directory.GetFiles
问题描述
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<一个href="http://www.beansoftware.com/ASP.NET-FAQ/Multiple-Filters-Directory.GetFiles-Method.aspx">example.
在code可能是:
///&LT;总结&gt; ///从符合给定的过滤器给定文件夹返回的文件名 ///&LT; /总结&gt; ///&LT; PARAM NAME =SourceFolder&GT;文件夹与文件检索和LT; /参数&GT; ///&LT; PARAM NAME =过滤器&GT;由分隔的多个文件过滤器|人物&LT; /参数&GT; ///&LT; PARAM NAME =searchOption&GT; File.IO.SearchOption, ///可能是AllDirectories或TopDirectoryOnly&LT; /参数&GT; ///&LT;返回&GT;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&GT; 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)); }
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