C# WPF后台动态添加控件(经典)

  <Grid>
        <dxlc:LayoutControl Orientation="Vertical">
            <dxlc:LayoutGroup Orientation="Horizontal" View="GroupBox">
                <dxlc:LayoutGroup.Header>
                    <dxlc:LayoutItem Label="Action" Background="#FF004486" Foreground="White"/>
                </dxlc:LayoutGroup.Header>
                <dxlc:LayoutItem Label="Image Count" >
                    <ComboBox SelectedIndex="{Binding ComSelectedIndex}">
                        <ComboBoxItem>2</ComboBoxItem>
                        <ComboBoxItem>4</ComboBoxItem>
                        <ComboBoxItem>6</ComboBoxItem>
                    </ComboBox>
                </dxlc:LayoutItem>
                <dxlc:LayoutItem Width="110">
                    <dx:SimpleButton Content="Image Dispaly" Background="LightGray" 
                       cal:Message.Attach="[Event Click]=[btnAdd_Click($source,$eventArgs)]" />
                </dxlc:LayoutItem>
            </dxlc:LayoutGroup>

            <dxlc:LayoutGroup Orientation="Horizontal" View="GroupBox">
                <dxlc:LayoutGroup.Header>
                    <dxlc:LayoutItem Label="Dispaly" Background="#FF004486" Foreground="White"/>
                </dxlc:LayoutGroup.Header>
                <UniformGrid 
                        cal:Message.Attach="[Event Loaded]=[UniformGrid_Loaded($source,$eventArgs)]" />
            </dxlc:LayoutGroup>
        </dxlc:LayoutControl>
    </Grid>

    [AddINotifyPropertyChangedInterface]
    public class UniformGridViewModel : Screen, IViewModel
    {
        public int ComSelectedIndex { get; set; }

        public UniformGrid UniformGrid;

        public string[] ImageFullPath;
        public void btnAdd_Click(object sender, RoutedEventArgs e)
        {

            UniformGrid.Children.Clear();
            UniformGrid.Columns = 2;

            var count = 0;
            switch(ComSelectedIndex)
            {
                case 0:
                    count = 2;break;
                case 1:
                    count = 4; break;
                case 2:
                    count = 6; break;
                default: break;
            }
            for (int i = 0; i < count; i++)
            {
                Image image = new Image();
                image.Source = LoadImageFreeze(ImageFullPath[i]);
                image.MouseLeftButtonUp += ImageClick;
                image.Name = Path.GetFileNameWithoutExtension(ImageFullPath[i]);
                image.Margin = new Thickness(5);
                UniformGrid.Children.Add(image);
            }
        }

        public void ImageClick(object sender, MouseButtonEventArgs e)
        {
            var name = (sender as Image).Name;
            MessageBox.Show($"当前选择的图片名称：{name}");
        }
        public void UniformGrid_Loaded(object sender, RoutedEventArgs e)
        {
            UniformGrid = (UniformGrid)sender;
        }
        public UniformGridViewModel()
        {
            DisplayName = "UniformGrid";
            string imagePath =Path.Combine( AppDomain.CurrentDomain.BaseDirectory, "Images");
            ImageFullPath = Directory.GetFiles(imagePath, "*.png");
        }

        public static BitmapImage LoadImageFreeze(string imagePath)
        {
            try
            {
                var bitmap = new BitmapImage();
                if (File.Exists(imagePath))
                {
                    bitmap.BeginInit();
                    bitmap.CacheOption = BitmapCacheOption.OnLoad;

                    using (Stream ms = new MemoryStream(File.ReadAllBytes(imagePath)))
                    {
                        bitmap.StreamSource = ms;
                        bitmap.EndInit();
                        bitmap.Freeze();
                    }
                }
                return bitmap;
            }
            catch (Exception)
            {
                return null;
            }
        }
    }