10进制转16进制再转2进制

提问

如何 10进制转16进制再转2进制

回答

static int HexString2BinString(object value, int index, int length)
{
    try
    {
        if (int.TryParse(value.ToString(), out int intValue))
        {
            var hexString = intValue.ToString("X4");
            string result = string.Empty;
            foreach (char c in hexString)
            {
                int v = Convert.ToInt32(c.ToString(), 16);
                int v2 = int.Parse(Convert.ToString(v, 2));
                // 去掉格式串中的空格，即可去掉每个4位二进制数之间的空格，
                result += string.Format("{0:d4}", v2);
            }

            return Convert.ToInt32(result.Substring(index, length), 2);
        }

        throw new Exception($"无法解析{value.ToString()}");
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
        throw;
    }
}