c# - 将文本文件数据存储在变量中

Question

是否可以将文本文件数据存储在只知道其扩展名的变量中？我在想类似的东西

string path = @"D:\MyTest";
 var txt = File.ReadAllLines(path + "*.txt");

Answer 1

如果你想查找扩展名为.txt的文件，如果找到了，加载内容:

  string path = @"D:\MyTest";

  // Please, notice that you'll have an array string[] txt
  // If you want just String txt output (not array) change ReadAllLines to ReadAllText  
  var txt = Directory
    .EnumerateFiles(path, "*.txt")
      // If you can have many text files you may want to add a filter here:
      // .Where(file => ...)
    .Select(file => File.ReadAllLines(file))
    .FirstOrDefault();