c# - How do i convert a Brush datatype to Color in c#, WP7?

Question

I am currently trying to convert a brush type to color using this code

Color a = (brush1 as SolidColorBrush).Color;

but i am getting a Nulpoint exception.Can anyone help?

Answer 1

如果转换不成功，则运算as符返回。null所以你的刷子不是一个SolidColorBrush或null。

Answer 2

空引用异常很可能是因为强制转换失败。您可以通过尝试直接转换来确认是否是这种情况：

Color a = ((SolidColorBrush)brush1).Color;

并查看是否会引发强制转换异常。