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私は単純なWPFエクスプローラツリーを開発しています。 Sacha Barberはそれについての良い記事を書いたhttp://www.codeproject.com/Articles/21248/A-Simple-WPF-Explorer-Tree、私はこのアプローチが好きで、私はそれを使用しています。単純なWPFエクスプローラツリー
私はできないことがあります。私はディレクトリだけでなく、ファイルも表示したいと思います。しかし、ファイルかフォルダかどうかをどのように認識するのか分かりません。ここで
は完全なコード現在の値がディレクトリの名前である場合、私はHeaderToImageConverter.Convertの内側に知ってどのように
public partial class Window1 : Window
{
private object dummyNode = null;
public Window1()
{
InitializeComponent();
}
public string SelectedImagePath { get; set; }
private void Window_Loaded(object sender, RoutedEventArgs e)
{
foreach (string s in Directory.GetLogicalDrives())
{
TreeViewItem item = new TreeViewItem();
item.Header = s;
item.Tag = s;
item.FontWeight = FontWeights.Normal;
item.Items.Add(dummyNode);
item.Expanded += new RoutedEventHandler(folder_Expanded);
foldersItem.Items.Add(item);
}
}
void folder_Expanded(object sender, RoutedEventArgs e)
{
TreeViewItem item = (TreeViewItem)sender;
if (item.Items.Count == 1 && item.Items[0] == dummyNode)
{
item.Items.Clear();
try
{
foreach (string s in Directory.GetDirectories(item.Tag.ToString()))
{
TreeViewItem subitem = new TreeViewItem();
subitem.Header = s.Substring(s.LastIndexOf("\\") + 1);
subitem.Tag = s;
subitem.FontWeight = FontWeights.Normal;
subitem.Items.Add(dummyNode);
subitem.Expanded += new RoutedEventHandler(folder_Expanded);
item.Items.Add(subitem);
}
// this code I added to show the files
foreach (string f in Directory.GetFiles(item.Tag.ToString()))
{
TreeViewItem subitem = new TreeViewItem();
subitem.Header = f.Substring(f.LastIndexOf("\\") + 1);
subitem.Tag = f;
subitem.FontWeight = FontWeights.Normal;
subitem.Items.Add(dummyNode);
item.Items.Add(subitem);
}
}
catch (Exception) { }
}
}
private void foldersItem_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
TreeView tree = (TreeView)sender;
TreeViewItem temp = ((TreeViewItem)tree.SelectedItem);
if (temp == null)
return;
SelectedImagePath = "";
string temp1 = "";
string temp2 = "";
while (true)
{
temp1 = temp.Header.ToString();
if (temp1.Contains(@"\"))
{
temp2 = "";
}
SelectedImagePath = temp1 + temp2 + SelectedImagePath;
if (temp.Parent.GetType().Equals(typeof(TreeView)))
{
break;
}
temp = ((TreeViewItem)temp.Parent);
temp2 = @"\";
}
//show user selected path
// MessageBox.Show(SelectedImagePath);
}
}
ウィンドウ
<Window x:Class="WPF_Explorer_Tree.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WPF_Explorer_Tree"
Title="Window1" Height="300" Width="300" Loaded="Window_Loaded">
<Grid>
<TreeView x:Name="foldersItem" SelectedItemChanged="foldersItem_SelectedItemChanged" Width="Auto" Background="#FFFFFFFF" BorderBrush="#FFFFFFFF" Foreground="#FFFFFFFF">
<TreeView.Resources>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="HeaderTemplate">
<Setter.Value>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Image Name="img" Width="20" Height="20" Stretch="Fill"
Source="{Binding
RelativeSource={RelativeSource
Mode=FindAncestor,
AncestorType={x:Type TreeViewItem}},
Path=Header,
Converter={x:Static local:HeaderToImageConverter.Instance}}"
/>
<TextBlock Text="{Binding}" Margin="5,0" />
</StackPanel>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
</TreeView.Resources>
</TreeView>
</Grid>
</Window>
コンバータ
[ValueConversion(typeof(string), typeof(bool))]
public class HeaderToImageConverter : IValueConverter
{
public static HeaderToImageConverter Instance = new HeaderToImageConverter();
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
// this is a diskdrive
if ((value as string).Contains(@"\"))
{
Uri uri = new Uri("pack://application:,,,/Images/diskdrive.png");
BitmapImage source = new BitmapImage(uri);
return source;
}
else
{
//maybe this is a directory or maybe this is a file. How do I know it?
Uri uri = new Uri("pack://application:,,,/Images/folder.png");
//Uri uri = new Uri("pack://application:,,,/Images/file.png");
BitmapImage source = new BitmapImage(uri);
return source;
}
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotSupportedException("Cannot convert back");
}
}
ですまたはファイルの名前？