使用c＃按创建日期过滤文件

Question

使用以下代码，我可以合并目录中存在的文本文件

 var allLines = Directory.GetFiles(directory, "*.txt")
                        .SelectMany(f => File.ReadLines(f));
File.WriteAllLines(outputFileName, allLines);

如何修改它以合并今天创建日期的文件？

DirectoryInfo info = new DirectoryInfo("");
FileInfo[] files = info.GetFiles().OrderBy(p => p.CreationTime).ToArray();

如何组合这段代码？

Answer 1

使用File.GetCreationTime方法：

var allLines = Directory.EnumerateFiles(directory, "*.txt", SearchOption.TopDirectoryOnly)
                        .Where(path => File.GetCreationTime(path).Date == DateTime.Today)
                        .SelectMany(f => File.ReadLines(f));

Answer 2

DirectoryInfo info = new DirectoryInfo(directory);

var allLines = info.GetFiles("*.txt")
                   .Where(p => p.CreationTime.Date == DateTime.Today)
                   .OrderBy(p => p.CreationTime)
                   .SelectMany(p => File.ReadAllLines(p.FullName));

File.WriteAllLines(outputFileName, allLines);

Answer 3

试试这个：

var allLines = Directory.GetFiles(directory, "*.txt")
    .Where(x => new FileInfo(x).CreationTime.Date == DateTime.Today.Date)
    .SelectMany(f => File.ReadLines(f));