Question

我正在尝试制作一个字典，以便从Binary转换为Hex，这就是我所做的：

private Dictionary<string, char> binaryCharacterTohex = new Dictionary<string, char>
        {
            {'0000', "0"},
            {'0001', "1"},
            {'0010', "2"},
            {'0011', "3"},
            {'0100', "4"},
            {'0101', "5"},
            {'0110', "6"},
            {'0111', "7"},
            {'1000', "8"},
            {'1001', "9"},
            {'1010', "a"},
            {'1011', "b"},
            {'1100', "c"},
            {'1101', "d"},
            {'1110', "e"},
            {'1111', "f"}
        };

但它一直给我“错误的编译常量值”我放在那里的每个二进制字符串值（'XXXX'），任何人都可以帮助我吗？

Answer 1

单引号在C＃中用于表示字符，双引号表示字符串。你现在就把它们倒退了。将它们全部切换出来它应该可以正常工作，如下所示：

private Dictionary<string, char> binaryCharacterTohex = new Dictionary<string, char>
{
    {"0000", '0'},
    {"0001", '1'},
    {"0010", '2'},
    {"0011", '3'},
    {"0100", '4'},
    {"0101", '5'},
    {"0110", '6'},
    {"0111", '7'},
    {"1000", '8'},
    {"1001", '9'},
    {"1010", 'a'},
    {"1011", 'b'},
    {"1100", 'c'},
    {"1101", 'd'},
    {"1110", 'e'},
    {"1111", 'f'}
};

Answer 2

'.'创建字符字面值字符只能是一个字符。

你想要一个带有双引号的字符串文字。

Answer 3

您倒置string和char引号。

' '定义了char，" "和string

您需要将{'0000', "0"},替换为{"0000", '0'},

Answer 4

双引号：""用于包装字符串。单引号：''用于字符。您的编译器错误意味着您已在代码中向后移动它们。您需要使代码看起来像这样：

private Dictionary<string, char> binaryCharacterTohex = new Dictionary<string, char>
        {
            {"0000", '0'},
            {"0001", '1'},
            //and so on
        };

字典字符串值中的错误编译常量值

4 个答案: