Question

新手学习wpf的treeview！选择一个路径，如何获取该路径下所有特定类型的文件，并将他们绑定在treeview的中

Xaml 部分 ：
<TreeView Name="tvDirectories" Grid.Column="0"
Margin="6,40,5,5"
MinWidth="500"
MinHeight="400"
Loaded="tvDirectories_Loaded">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type l:FolderTree}" ItemsSource="{Binding Folders}">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=Title}" HorizontalAlignment="Center"/>
</StackPanel>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>  

Answer 1

前面：

    <Grid>

        <TreeView Name="tvDirectories" ItemsSource="{Binding}" >

        </TreeView>

        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="401,276,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click"/>

    </Grid>

后台：     

  private void button1_Click(object sender, RoutedEventArgs e)

        {

            var list = new List<string>();

            string path = @"D:\软件安装程序\应用软件\";//文件夹的路径

            if (Directory.Exists(path))//判断要保存的目录文件是否存在。

            {

                var directory = new DirectoryInfo(path);

                FileInfo[] collection = directory.GetFiles("*.exe");//指定类型

                foreach (FileInfo item in collection)

                {

                    string fullname = item.Name.ToString();

                    string filename = fullname.Substring(0, fullname.LastIndexOf("."));//去掉后缀名。

                    list.Add(filename);

                }

                tvDirectories.DataContext = list;

            }

            else

            {

                MessageBox.Show("文件夹不存在！");

            }

        }