最終更新:2020-05-12 (火) 23:07:07 (1454d)
Directory.GetFiles
Top / Directory.GetFiles
https://docs.microsoft.com/ja-jp/dotnet/api/system.io.directory.getfiles?view=netcore-3.1
var files = Directory.GetFiles(@".",*.png"); List<string> fileNames = new List<string>(); foreach (var file in files) { fileNames.Add(Path.GetFileName(file)); } listBox1.Items.AddRange(fileNames.ToArray());