我在C#中创建了一个文件资源管理器,用于从目录列表中选择一个文件,但是我对如何指定文件类型本身知之甚少。
我只想显示.xls
个文件,而不是所有显示的文件。我该怎么做?我目前有:
TreeNode newSelected = e.Node;
listView1.Items.Clear();
DirectoryInfo nodeDirInfo = (DirectoryInfo)newSelected.Tag;
ListViewItem.ListViewSubItem[] subItems;
ListViewItem item = null;
foreach (DirectoryInfo dir in nodeDirInfo.GetDirectories())
{
item = new ListViewItem(dir.Name, 0);
subItems = new ListViewItem.ListViewSubItem[]
{new ListViewItem.ListViewSubItem(item, "Directory"),
new ListViewItem.ListViewSubItem(item,
dir.LastAccessTime.ToShortDateString())};
item.SubItems.AddRange(subItems);
listView1.Items.Add(item);
}
foreach (FileInfo file in nodeDirInfo.GetFiles())
{
item = new ListViewItem(file.Name, 1);
subItems = new ListViewItem.ListViewSubItem[]
{ new ListViewItem.ListViewSubItem(item, "File"),
new ListViewItem.ListViewSubItem(item,
file.LastAccessTime.ToShortDateString())};
item.SubItems.AddRange(subItems);
listView1.Items.Add(item);
}
答案 0 :(得分:2)
DirectorInfo.GetFiles("*.xls");
会给你那个过滤器。
答案 1 :(得分:1)
您可以将第二个for循环更改为:
foreach (var file in nodeDirInfo.GetFiles())
{
if (file.Extension == ".xls")
{
// Do the stuff with the file
}
}
或
foreach (var file in nodeDirInfo.GetFiles()
.Where(file =>
string.Equals(file.Extension, ".xls")))
{
// Do the stuff with the file
}
出于您的目的,我建议您使用OpenFileDialog
,因为您只需要用户从目录中选择一个文件:
var openFileDialog1 = new OpenFileDialog();
openFileDialog1.InitialDirectory = @"C:\Path\To\Directory\";
openFileDialog1.Filter = "Excel Files (*.xls)|*.xls";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
var selectedFilePath = openFileDialog1.FileName;
}