It depends on your goal. If it is conversion from hex to double, you can use following C# methods: How to: Convert Between Hexadecimal Strings and Numeric Types (C# Programming Guide)

这取决于你的目标。如果从十六进制转换双，你可以使用c#方法如下： 如何：十六进制字符串之间转换和数字类型（c#编程指南）

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A hex triplet is a six-digit, three-byte hexadecimal number to represent colors.

一个十六进制的三胞胎是一个六位数、三个字节的十六进制数字代表的颜色。

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Hex converter: enter a binary, octal, decimal, hexadecimal number the number has been entered into the rest of hexadecimal Numbers with input and output interface.

进制转换器：可输入二进制、八进制、十进制、十六进制数；将已输入的数转换成其余进制的数；具有输入输出界面。

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