WPF网格-自动大小的列在内容可见性设置为visibility时不会崩溃。

I have the following simpl WPf grid, two columns, a button in each column, the first column auto sized and a splitter to allow column resizing. An event handler is set up on the splitter MouseDoubleclick event. When the splitter is doulble clicked the button in the left column is collapsed.I have the following simpl WPf grid, two column