C# 程序，实现二进制文件十六进制查看器，支持按行定位

主窗体代码 (Form1.cs)

using System;
using System.IO;
using System.Text;
using System.Windows.Forms;

namespace HexViewer
{
public partial class Form1 : Form
{
private byte[] fileData;
private int bytesPerLine = 16;
private int currentPosition = 0;
private int totalLines = 0;

// 控件声明
private MenuStrip menuStrip;
private ToolStripMenuItem fileMenu;
private ToolStripMenuItem openMenuItem;
private ToolStripMenuItem exitMenuItem;
private ToolStripMenuItem viewMenu;
private ToolStripMenuItem bytesPerLineMenu;
private ToolStripMenuItem bytes8MenuItem;
private ToolStripMenuItem bytes16MenuItem;
private ToolStripMenuItem bytes32MenuItem;
private RichTextBox hexRichTextBox;
private TextBox lineNumberTextBox;
private Button goToButton;
private Label statusLabel;
private Panel topPanel;
private Label lineLabel;
private OpenFileDialog openFileDialog;

public Form1()
{
InitializeComponent();
InitializeCustomComponents();
}

private void InitializeCustomComponents()
{
// 窗体设置
this.Text = "十六进制文件查看器";
this.Size = new System.Drawing.Size(1000, 700);
this.StartPosition = FormStartPosition.CenterScreen;

// 菜单栏
menuStrip = new MenuStrip();

fileMenu = new ToolStripMenuItem("文件");
openMenuItem = new ToolStripMenuItem("打开", null, OpenFile_Click);
openMenuItem.ShortcutKeys = Keys.Control | Keys.O;
exitMenuItem = new ToolStripMenuItem("退出", null, (s, e) => Application.Exit());
fileMenu.DropDownItems.Add(openMenuItem);
fileMenu.DropDownItems.Add(new ToolStripSeparator());
fileMenu.DropDownItems.Add(exitMenuItem);

viewMenu = new ToolStripMenuItem("查看");
bytesPerLineMenu = new ToolStripMenuItem("每行字节数");
bytes8MenuItem = new ToolStripMenuItem("8 字节", null, (s, e) => SetBytesPerLine(8));
bytes16MenuItem = new ToolStripMenuItem("16 字节", null, (s, e) => SetBytesPerLine(16));
bytes32MenuItem = new ToolStripMenuItem("32 字节", null, (s, e) => SetBytesPerLine(32));
bytes16MenuItem.Checked = true;
bytesPerLineMenu.DropDownItems.Add(bytes8MenuItem);
bytesPerLineMenu.DropDownItems.Add(bytes16MenuItem);
bytesPerLineMenu.DropDownItems.Add(bytes32MenuItem);
viewMenu.DropDownItems.Add(bytesPerLineMenu);

menuStrip.Items.Add(fileMenu);
menuStrip.Items.Add(viewMenu);

// 顶部面板
topPanel = new Panel();
topPanel.Dock = DockStyle.Top;
topPanel.Height = 40;
topPanel.Padding = new Padding(5);

lineLabel = new Label();
lineLabel.Text = "跳转到行:";
lineLabel.Location = new System.Drawing.Point(5, 10);
lineLabel.Size = new System.Drawing.Size(70, 25);

lineNumberTextBox = new TextBox();
lineNumberTextBox.Location = new System.Drawing.Point(80, 8);
lineNumberTextBox.Size = new System.Drawing.Size(100, 25);
lineNumberTextBox.KeyPress += LineNumberTextBox_KeyPress;

goToButton = new Button();
goToButton.Text = "跳转";
goToButton.Location = new System.Drawing.Point(190, 7);
goToButton.Size = new System.Drawing.Size(75, 28);
goToButton.Click += GoToButton_Click;

topPanel.Controls.Add(lineLabel);
topPanel.Controls.Add(lineNumberTextBox);
topPanel.Controls.Add(goToButton);

// 十六进制显示区域
hexRichTextBox = new RichTextBox();
hexRichTextBox.Dock = DockStyle.Fill;
hexRichTextBox.Font = new System.Drawing.Font("Consolas", 10f);
hexRichTextBox.WordWrap = false;
hexRichTextBox.KeyDown += HexRichTextBox_KeyDown;

// 状态栏
statusLabel = new Label();
statusLabel.Dock = DockStyle.Bottom;
statusLabel.Height = 25;
statusLabel.Text = "就绪 – 使用 Ctrl+O 打开文件";
statusLabel.Padding = new Padding(5, 0, 0, 0);

// 添加控件
this.Controls.Add(hexRichTextBox);
this.Controls.Add(topPanel);
this.Controls.Add(statusLabel);
this.Controls.Add(menuStrip);

this.MainMenuStrip = menuStrip;

// 文件对话框
openFileDialog = new OpenFileDialog();
openFileDialog.Title = "选择二进制文件";
openFileDialog.Filter = "所有文件 (*.*)|*.*";
}

private void SetBytesPerLine(int bytes)
{
bytesPerLine = bytes;
bytes8MenuItem.Checked = (bytes == 8);
bytes16MenuItem.Checked = (bytes == 16);
bytes32MenuItem.Checked = (bytes == 32);

if (fileData != null)
{
DisplayHexData(currentPosition);
}
}

private void OpenFile_Click(object sender, EventArgs e)
{
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
try
{
fileData = File.ReadAllBytes(openFileDialog.FileName);
currentPosition = 0;
totalLines = (fileData.Length + bytesPerLine – 1) / bytesPerLine;
DisplayHexData(0);
statusLabel.Text = $"已加载: {openFileDialog.FileName} | 大小: {fileData.Length:N0} 字节 | 总行数: {totalLines:N0}";
this.Text = $"十六进制文件查看器 – {Path.GetFileName(openFileDialog.FileName)}";
lineNumberTextBox.Text = "1";
}
catch (Exception ex)
{
MessageBox.Show($"打开文件失败: {ex.Message}", "错误",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}

private void DisplayHexData(int startPosition)
{
if (fileData == null || fileData.Length == 0)
{
hexRichTextBox.Text = "";
return;
}

// 确保起始位置有效
if (startPosition < 0) startPosition = 0;
if (startPosition >= fileData.Length) startPosition = fileData.Length – 1;

// 计算从哪一行开始显示
int startLine = startPosition / bytesPerLine;
int startOffset = startLine * bytesPerLine;

// 计算显示的行数（基于窗口高度）
int linesToShow = (hexRichTextBox.Height / 20) + 2; // 估算每行高度
if (linesToShow < 20) linesToShow = 30;

StringBuilder sb = new StringBuilder();

for (int i = 0; i < linesToShow; i++)
{
int offset = startOffset + i * bytesPerLine;
if (offset >= fileData.Length) break;

// 行号 (8位十六进制)
sb.Append(offset.ToString("X8"));
sb.Append(" ");

// 十六进制部分
int bytesInThisLine = Math.Min(bytesPerLine, fileData.Length – offset);
for (int j = 0; j < bytesPerLine; j++)
{
if (j < bytesInThisLine)
{
sb.Append(fileData[offset + j].ToString("X2"));
}
else
{
sb.Append(" ");
}

if (j == bytesPerLine / 2 – 1)
sb.Append(" "); // 中间分隔
else
sb.Append(" ");
}

sb.Append(" ");

// ASCII 部分
for (int j = 0; j < bytesInThisLine; j++)
{
byte b = fileData[offset + j];
char c = (b >= 32 && b <= 126) ? (char)b : '.';
sb.Append(c);
}

sb.AppendLine();
}

hexRichTextBox.Text = sb.ToString();

// 高亮当前光标所在行
HighlightCurrentLine();

currentPosition = startOffset;
UpdateStatus();
}

private void HighlightCurrentLine()
{
if (hexRichTextBox.Text.Length == 0) return;

int currentLine = currentPosition / bytesPerLine;

// 简单的行高亮：通过选择行文本
int startIndex = 0;
for (int i = 0; i < currentLine; i++)
{
startIndex = hexRichTextBox.Text.IndexOf('\\n', startIndex) + 1;
if (startIndex <= 0) return;
}

int endIndex = hexRichTextBox.Text.IndexOf('\\n', startIndex);
if (endIndex == -1) endIndex = hexRichTextBox.Text.Length;

hexRichTextBox.SelectionStart = startIndex;
hexRichTextBox.SelectionLength = endIndex – startIndex;
hexRichTextBox.SelectionBackColor = System.Drawing.Color.LightYellow;

// 滚动到可见位置
hexRichTextBox.ScrollToCaret();
}

private void GoToLine(int lineNumber)
{
if (fileData == null)
{
MessageBox.Show("请先打开文件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}

if (lineNumber < 1 || lineNumber > totalLines)
{
MessageBox.Show($"行号必须在 1 到 {totalLines} 之间", "无效行号",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}

int newPosition = (lineNumber – 1) * bytesPerLine;
if (newPosition >= fileData.Length)
newPosition = fileData.Length – 1;

currentPosition = newPosition;
DisplayHexData(currentPosition);
lineNumberTextBox.Text = lineNumber.ToString();
}

private void GoToOffset(int offset)
{
if (fileData == null) return;

if (offset < 0) offset = 0;
if (offset >= fileData.Length) offset = fileData.Length – 1;

currentPosition = offset;
DisplayHexData(currentPosition);
lineNumberTextBox.Text = ((currentPosition / bytesPerLine) + 1).ToString();
}

private void UpdateStatus()
{
if (fileData != null)
{
int currentLine = currentPosition / bytesPerLine + 1;
int currentByte = currentPosition;
statusLabel.Text = $"行: {currentLine:N0} / {totalLines:N0} | " +
$"偏移: 0x{currentPosition:X8} ({currentPosition:N0}) | " +
$"字节: {currentByte + 1} / {fileData.Length:N0}";
}
}

private void GoToButton_Click(object sender, EventArgs e)
{
if (int.TryParse(lineNumberTextBox.Text, out int lineNumber))
{
GoToLine(lineNumber);
}
else
{
// 尝试解析为十六进制偏移
string input = lineNumberTextBox.Text.Trim();
if (input.StartsWith("0x", StringComparison.OrdinalIgnoreCase))
{
if (int.TryParse(input.Substring(2), System.Globalization.NumberStyles.HexNumber, null, out int offset))
{
GoToOffset(offset);
return;
}
}
else if (int.TryParse(input, System.Globalization.NumberStyles.HexNumber, null, out int hexOffset))
{
GoToOffset(hexOffset);
return;
}

MessageBox.Show("请输入有效的行号 (1-" + totalLines + ") 或十六进制偏移 (如 0x100)",
"无效输入", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}

private void LineNumberTextBox_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)Keys.Enter)
{
GoToButton_Click(sender, e);
e.Handled = true;
}
}

private void HexRichTextBox_KeyDown(object sender, KeyEventArgs e)
{
if (fileData == null) return;

int currentLine = currentPosition / bytesPerLine;

switch (e.KeyCode)
{
case Keys.Up:
if (currentLine > 0)
{
GoToLine(currentLine);
}
e.Handled = true;
break;

case Keys.Down:
if (currentLine < totalLines – 1)
{
GoToLine(currentLine + 2);
}
e.Handled = true;
break;

case Keys.PageUp:
int pageLines = (hexRichTextBox.Height / 20);
int newLine = Math.Max(0, currentLine – pageLines);
GoToLine(newLine + 1);
e.Handled = true;
break;

case Keys.PageDown:
pageLines = (hexRichTextBox.Height / 20);
newLine = Math.Min(totalLines – 1, currentLine + pageLines);
GoToLine(newLine + 1);
e.Handled = true;
break;

case Keys.Home:
GoToLine(1);
e.Handled = true;
break;

case Keys.End:
GoToLine(totalLines);
e.Handled = true;
break;
}
}

protected override void OnResize(EventArgs e)
{
base.OnResize(e);
if (fileData != null)
{
DisplayHexData(currentPosition);
}
}
}
}

入口点代码 (Program.cs)

using System;
using System.Windows.Forms;

namespace HexViewer
{
static class Program
{
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
}

功能说明

运行界面