C# 文件夹，文件操作

1 设置文件保存路径

FolderBrowserDialog fbd = new FolderBrowserDialog();
fbd.ShowDialog();
folderName = fbd.SelectedPath; //获得选择的文件夹路径

2 向文件中写入数据

FileStream fs = new FileStream(savePath,FileMode.Append);
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine(builder.ToString());
sw.Close();
fs.Close();

3 遍历文件夹查找文件

List<string> saveFlieName = new List<string>();
DirectoryInfo TheFolder = new DirectoryInfo(filePath);
//遍历文件
saveFlieName.Clear();
ReadFile rf = new ReadFile();
foreach (FileInfo NextFile in TheFolder.GetFiles())
saveFlieName.Add(NextFile.Name);

//查找txt文件
[code]//Directory.GetFiles(_path, 

"*.txt"

, SearchOption.AllDirectories);

转载于:https://www.cnblogs.com/braceli/p/5800731.html