在文件浏览器中选择了错误的文件夹时ArgumentOutOfRangeException

Question

所以我在WPF C＃中开发了一些东西。它首先浏览文件以使系统正常工作。但是，如果所选文件夹位于错误的文件中，则会抛出错误

  

类型＆＃39; System.ArgumentOutOfRangeException＆＃39;的例外情况发生在mscorlib.dll中但未在用户代码中处理

var browse = new System.Windows.Forms.FolderBrowserDialog();
browse.Description = "Select a folder containing *.train files.";
if (browse.ShowDialog() != System.Windows.Forms.DialogResult.OK)
    return;
string[] fileNames = Directory.GetFiles(browse.SelectedPath, "*.train");           
Array.Sort(fileNames);

提前谢谢！

Answer 1

   var browse = new System.Windows.Forms.FolderBrowserDialog();
    browse.Description = "Select a folder containing *.train files.";
    if (browse.ShowDialog() != System.Windows.Forms.DialogResult.OK)
        return;
    if (!string.IsNullOrEmpty(browse.SelectedPath))
    {
        string[] fileNames = Directory.GetFiles(browse.SelectedPath, "*.train"); 
        Array.Sort(fileNames);
    }