使用MVVM的变量网格行计数

如果rowdefinition是dependency属性,则可以创建属性rowdefinition[]rowdefinitions,并返回rowcount长度的rowdefinition数组,然后将该数组绑定到rowdefinition属性,否则,应使用itemscontrol创建用户控件以显示所需内容…

您尝试过附加属性吗?我不确定,但你可以这样做:

    public class GridExtensions
    {
        public static Int32 GetGridRowCount(DependencyObject obj)
        {
            return (Int32)obj.GetValue(GridRowCountProperty);
        }

        public static void SetGridRowCount(DependencyObject obj, UIElementCollection value)
        {
            obj.SetValue(GridRowCountProperty, value);
        }

        // Using a DependencyProperty as the backing store for GridRowCount.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty GridRowCountProperty =
            DependencyProperty.RegisterAttached("GridRowCount", typeof(Int32), typeof(Grid), new FrameworkPropertyMetadata(OnGridRowCountChanged));

        public static void OnGridRowCountChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
        {
            if (e.NewValue != null && obj is Grid)
            {
                Int32 rowCount = (Int32)e.NewValue;
                Grid grid = (Grid)obj;

                grid.RowDefinitions.Clear();
                grid.Children.Clear();

                for (int i = 1; i <= rowCount; i++)
                {
                    grid.RowDefinitions.Add(new RowDefinition());
                    Grid.SetRow(grid.Children[index], i - 1);
                }
            }
        }
    }

使用方式如下:

<Grid local:GridExtensions.GridRowCount="10"></Grid>