闲暇时间制作了一个小工具，实现16进制数转整数或浮点数，按左右键可以调整字节顺序
using System; using System.Buffers.Binary; using System.Reflection.Metadata;namespace Hex32ConvertTool {class Program{// 四组字节序映射 0~3 对应原字节 [B0,B1,B2,B3]private static readonly int[][] _orderMap ={new[] {0, 1, 2, 3}, // ABCDnew[] {1, 0, 3, 2}, // BADCnew[] {2, 3, 0, 1}, // CDABnew[] {3, 2, 1, 0} // DCBA };private static readonly string[] _orderName = { "ABCD", "BADC", "CDAB", "DCBA" };private static readonly string[] _typeName = { "int32 整数", "float 单精度浮点" };static void Main(string[] args){Console.OutputEncoding = System.Text.Encoding.UTF8;Console.InputEncoding = System.Text.Encoding.UTF8;Console.Title = "32位16进制转换器｜字序切换";Console.CursorVisible = false;string hexStr = string.Empty;int selectType = 0; // 0:int 1:floatint selectOrder = 0; // 字节序选中项while (true){Console.Clear();DrawUI(hexStr, selectType, selectOrder);var key = Console.ReadKey(true);// ESC 清空重新输入if (key.Key == ConsoleKey.Escape){hexStr = string.Empty;continue;}// 切换类型 i 整数 / f 浮点if (key.Key == ConsoleKey.I) selectType = 0;if (key.Key == ConsoleKey.F) selectType = 1;// 左右箭头切换字节序if (key.Key == ConsoleKey.LeftArrow)selectOrder = selectOrder <= 0 ? 3 : selectOrder - 1;if (key.Key == ConsoleKey.RightArrow)selectOrder = selectOrder >= 3 ? 0 : selectOrder + 1;// 退格删除if (key.Key == ConsoleKey.Backspace && hexStr.Length > 0){hexStr = hexStr[..^1];continue;}// 只允许合法16进制字符，限制最大8位char c = key.KeyChar;if (IsHexChar(c) && hexStr.Length < 8){hexStr += c.ToString().ToUpper();}}}/// <summary>绘制界面 + 自动计算结果</summary>private static void DrawUI(string hex, int typeIdx, int orderIdx){Console.WriteLine("⫷ ⫷ ⫷ ⫷ ⫷ 32位 16进制转换工具 ⫸ ⫸ ⫸ ⫸ ⫸\n");Console.WriteLine($"≻ 输入16进制(最大8位)：{(string.IsNullOrEmpty(hex) ? "待输入" : hex)}\n");Console.WriteLine($"≻ 数据类型：{_typeName[typeIdx]} 【按键 I / F 切换】\n");Console.WriteLine($"≻ 字节字序：{_orderName[orderIdx]} 【← → 方向键切换】\n");Console.WriteLine("⫷ ⫷ ⫷ ⫷ ⫷ ⫷ ⫷ ⫷ ⫷ ⫷ ⫸ ⫸ ⫸ ⫸ ⫸ ⫸ ⫸ ⫸ ⫸ ⫸\n");// 不足8位自动补0string hex8 = hex.PadLeft(8, '0');try{// 原始4字节byte[] rawBytes = HexToBytes(hex8);// 按选中字序重排byte[] outBytes = new byte[4];var map = _orderMap[orderIdx];for (int i = 0; i < 4; i++){outBytes[i] = rawBytes[map[i]];}Console.WriteLine($"≻ 原始字节：{BitConverter.ToString(rawBytes)}\n");Console.WriteLine($"≻ 重组字节：{BitConverter.ToString(outBytes)}\n");Console.WriteLine("⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁ ⋁\n");if (typeIdx == 0){//int intVal = BitConverter.ToInt32(outBytes, 0);int intVal =BinaryPrimitives.ReadInt32BigEndian(outBytes);Console.WriteLine($"≻ 输出整数：{intVal}\n");}else{//float floatVal = BitConverter.ToSingle(outBytes, 0);float floatVal = BinaryPrimitives.ReadSingleBigEndian(outBytes);Console.WriteLine($"≻ 输出浮点：{floatVal:F6} \n");}}catch{Console.WriteLine("⚠️ 16进制格式错误");}Console.WriteLine("⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀ ⋀\n");Console.WriteLine("ESC = 清空重输｜Backspace = 删除");}/// <summary>合法16进制字符判断</summary>private static bool IsHexChar(char c){return (c >= '0' && c <= '9') ||(c >= 'A' && c <= 'F') ||(c >= 'a' && c <= 'f');}/// <summary>8位16进制转4字节</summary>private static byte[] HexToBytes(string hex8){byte[] res = new byte[4];for (int i = 0; i < 4; i++){string part = hex8.Substring(i * 2, 2);res[i] = Convert.ToByte(part, 16);}return res;}} }