C#编写十六进制展示控件

首先效果图：

百度网盘下载地址：http://pan.baidu.com/s/1gdlCZ4J

CSDN下载地址：http://download.csdn.net/detail/crystal_lz/8155323

因为最近需要素以写了一个 如果控件只是单纯的显示数据 不用选中什么的到是很好处理 直接g.DrawString绘制出来就是了 但是这里我全部是用的TextRenderer.DrawText() 因为貌似TextRenderer绘制文本的时候 可以带上文本背景色这样绘制选中文本就方便了 虽然可以用DrawRectangle和DrawString达到同样效果 但是太麻烦了感觉 但是很遗憾貌似TextRenderer在指定颜色的时候A通道无效 也是就是说无法绘制透明效果的文字来着 不过算了 没有人会设置透明的文字颜色吧

说说思路吧 首先你得有数据吧？所以控件必然有个属性为byte[]类型 而控件需要做的就是将这个byte数组的数据绘制出来 如同刚才上面说的 如果只是展示不需要选中什么的 很好处理 直接DrawString就行了每行取出byte数组的十六个数据：

g.DrawString(addr.ToString("X").PadLeft(8,'0') + "  " 
    + BitConverter.ToString(byte[],index,len).Replace('-',' ') 
    + "  " + Encoding.ASCII.GetString(byte[],index,len));

// 16进制数据每个字符的偏移量
protected int[] m_nArrHexLeftOffset;
// ASCII数据每个字符的偏移量
protected int[] m_nArrAscLeftOffset;

/// <summary>
/// 绘制16进制数据
/// </summary>
/// <param name="g">绘图设备</param>
protected virtual void DrawHex(Graphics g) {
    int len = this._TopLineStartIndex + m_nLinesForDraw;
    if (len > m_nLineCount) len = m_nLineCount;
    for (int i = this._TopLineStartIndex; i < len; i++) {
        string strDraw = (this._StartAddr + i * 16).ToString("X").PadLeft(8, '0') + "  ";
        //g.DrawString(strDraw, this.Font, Brushes.Blue, this._LeftOffset, (i - this._TopLineStartIndex + 1) * this.Font.Height);
        TextRenderer.DrawText(g, strDraw, this.Font, new Point(this._LeftOffset, (i - this._TopLineStartIndex + 1) * this.Font.Height), this._AddrColor);
        int index = i * 16;
        for (int j = 0; j < 16; j++) {
            Color clrHexForeColor = this._HexForeColor;
            Color clrHexBackColor = Color.Transparent;
            Color clrASCIIForeColor = this._ASCIIForeColor;
            Color clrASCIIBackColor = Color.Transparent;
            if (index == this._SelectedDataIndex) {
                clrHexForeColor = this._HexHighForeColor;
                clrHexBackColor = this._HexHighBackColor;
                clrASCIIForeColor = this._ASCIIHighForeColor;
                clrASCIIBackColor = this._ASCIIHighBackColor;
            } else if (index >= this._SelectionStartIndex && index <= this._SelectionEndIndex) {
                clrHexForeColor = this._HexSelectedForeColor;
                clrHexBackColor = this._HexSelectedBackColor;
                clrASCIIForeColor = this._ASCIISelectedForeColor;
                clrASCIIBackColor = this._ASCIISelectedBackColor;
            }
            TextRenderer.DrawText(g, this._ByteData[index].ToString("X").PadLeft(2, '0'), this.Font,
                new Point(m_nArrHexLeftOffset[j] + this._LeftOffset, (i - this._TopLineStartIndex + 1) * this.Font.Height),
                clrHexForeColor, clrHexBackColor);
            TextRenderer.DrawText(g, ((char)(this._ByteData[index] == 0 ? (byte)'.' : this._ByteData[index])).ToString(), this.Font,
                new Point(m_nArrAscLeftOffset[j] + this._LeftOffset, (i - this._TopLineStartIndex + 1) * this.Font.Height),
                clrASCIIForeColor, clrASCIIBackColor);
            if (++index == this._ByteData.Length) return;
        }
    }
}

其他具体细节自己看源码吧