如何将布尔值列表转换为int?

问题描述

如何将布尔值列表转换为等于解释为字节的布尔值的整数?

How do I convert a boolean list to an integer equal to the Booleans interpreted as a byte?

即

public List<Boolean> MyList = new List<Boolean>();
MyList.Add(true);
MyList.Add(true);
MyList.Add(false);
MyList.Add(false);
MyList.Add(false);
MyList.Add(false);
MyList.Add(false);
MyList.Add(false);

这将返回3.

推荐答案

您不能，至少不能直接这样做.

You can't, at least not directly.

您可以使用BitArray类( MSDN )，将您的bool集合转换为位，然后从中获取一个数字:

You can however use the BitArray class (MSDN) to transform your bool collection to bits, and then get a number from that:

BitArray bitField = new BitArray(MyList.ToArray()); //BitArray takes a bool[]
byte[] bytes = new byte[1];
bitField.CopyTo(bytes, 0);
return bytes[0];

从以下位置将BitArray转换为值: https://stackoverflow.com/a/560131/1783619

BitArray to value conversion from: https://stackoverflow.com/a/560131/1783619

请注意，此技术也适用于大于8位的数字，但是您需要使用BitConverter( MSDN )以从字节数组中获取值(而不是仅返回第一个)

Note that this technique works for numbers larger than 8-bit as well, but you would need to use BitConverter (MSDN) to get the values back from the byte array (instead of just returning the first one)

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