向C中的网格元素添加具有跨距的子元素时超出范围#

我有这个密码。除了第一行使用网格。添加我正试着做一个跨度。

var grid = new Grid();
grid.ColumnSpacing = 4;
grid.RowSpacing = 8;
grid.Margin = 20;
grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
grid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
grid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
grid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });
grid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star) });

grid.Children.Add(new BaseButton("A", "A"), 0, 2, 0, 0);
grid.Children.Add(new BaseButton("B", "B"), 0, 1);
grid.Children.Add(new BaseButton("C", "C"), 1, 1);
grid.Children.Add(new BaseButton("D", "D"), 0, 2);
grid.Children.Add(new BaseButton("E", "E"), 1, 2);
grid.Children.Add(new BaseButton("F", "F"), 0, 3);
grid.Children.Add(new BaseButton("G", "G"), 1, 3);
grid.Children.Add(new BaseButton("H", "H"), 2, 3);

grid.Children.Add(new BaseButton("A", "A"), 0, 2, 0, 0);

System.ArgumentOutOfRangeException has been thrown. Specified argument was out of the range of valid values.

参数名称:bottom

有人能回顾一下我所拥有的,并对可能出错的地方发表评论吗?