我怎样才能得到uniformgrid中的所有按钮并滚动它来查看它们？

Question

我正在构建一个应用程序来显示计算机中安装的所有软件，我已经有了所有按钮以显示相应的图标，但是当我显示它们时，uniformgrid 只显示适合窗口的按钮，我以为滚动条会显示它们，但我到了窗口的尽头，按钮仍然不见了！我怎样才能用滚动条显示它们？ 这是 XAML 代码：

<Window x:Class="apple.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"> 
        <Grid>
            <DockPanel Name="dock">
            <ScrollViewer VerticalScrollBarVisibility="Auto">
                <UniformGrid Name="gridx" DockPanel.Dock="Top" Rows="7" Columns="7">

                </UniformGrid>
            </ScrollViewer>
        </DockPanel>
    </Grid>
</Window>

这里是c#代码：

namespace apple
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public string[] link = Directory.GetFiles(@"C:\ProgramData\Microsoft\Windows\Start Menu\Programs", "*.lnk", SearchOption.AllDirectories);

        public MainWindow()
        {
            this.ResizeMode = ResizeMode.NoResize;
            //this.WindowStyle = WindowStyle.None;
            this.WindowState = WindowState.Maximized;
            InitializeComponent();
            masterGUI();
        }

        public void masterGUI()
        {
            gridx.Height = System.Windows.SystemParameters.PrimaryScreenHeight;
            IconImage[] ico = null;
            Bitmap[] img = null;
            string[] list = null;
            list = new string[link.Length];
            ico = new Icon[link.Length];
            img = new Bitmap[link.Length];
            for (int n = 0; n < link.Length; n++)
            {
                ImageBrush ib = new ImageBrush();
                System.Windows.Controls.Button newBtn = new Button();
                list[n] = System.IO.Path.GetFileNameWithoutExtension(link[n]);
                FileToImageIconConverter some = new FileToImageIconConverter(link[n]);
                ImageSource imgSource = some.Icon;
                ib.ImageSource = imgSource;
                newBtn.Name = "a" + n;
                newBtn.Background = ib;
                newBtn.Content = list[n];
                newBtn.Click += new RoutedEventHandler(newBtn_Click);
                gridx.Children.Add(newBtn);
            }  
        }

        private void newBtn_Click(object sender, RoutedEventArgs e)
        {
            Button clicked = (Button)sender;
            string test = null;
            test = clicked.Name.Replace("a","0");
            this.Close();
            System.Diagnostics.Process.Start(link[Int32.Parse(test)]);
        }
    }
}

Answer 1

删除Grid 和DockPanel 并设置UniformGrid.Rows 或UniformGrid.Columns，不能同时设置。您只需要Window、ScrollViewer 和UniformGrid：

<Window>
    <ScrollViewer>
        <UniformGrid Name="gridx" Columns="7"/>
    </ScrollViewer>
</Window>

要以更惯用的 WPF 方式进行，你应该有这样的东西：

<Window>
    <ScrollViewer>
        <ItemsControl ItemsSource="{Binding Programs}">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <UniformGrid Columns="7"/>

然后，您将从您的数据源公开一个Programs 集合，从而为每个已安装的程序自动生成一个项目。