.net - 为什么 Color.FromArgb(255, 255, 255, 255) != Color.White？

Question

为什么 Color.FromArgb(255, 255, 255, 255) 是 不是 等于 Color.White ？是否有任何内置方法可以只比较 A、R、G、B 值而不是颜色名称？

谢谢。

Answer 1

见 http://msdn.microsoft.com/en-us/library/e03x8ct2(VS.85).aspx

This structure only does comparisons with other Color structures. To compare colors based solely on their ARGB values, you should use the ToArgb method. This is because the Equals and op_Equality members determine equivalency using more than just the ARGB value of the colors. For example, Black and FromArgb(0,0,0) are not considered equal, since Black is a named color and FromArgb(0,0,0) is not.