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c# 转换Image为Icon

/// <summary>/// 转换Image为Icon/// </summary>/// <param name="image">要转换为图标的Image对象</param>/// <param name="nullTonull">当image为null时是否返回null。false则抛空引用异常</param>/// <exception cref="ArgumentNullException" />public static Icon ConvertToIcon(Image image, bool nullTonull = false){    if (image == null)    {        if (nullTonull) { return null; }        throw new ArgumentNullException("image");    }    using (MemoryStream msImg = new MemoryStream()                      , msIco = new MemoryStream())    {        image.Save(msImg, ImageFormat.Png);        using (var bin = new BinaryWriter(msIco))        {            //写图标头部            bin.Write((short)0);           //0-1保留            bin.Write((short)1);           //2-3文件类型。1=图标, 2=光标            bin.Write((short)1);           //4-5图像数量(图标可以包含多个图像)            bin.Write((byte)image.Width);  //6图标宽度            bin.Write((byte)image.Height); //7图标高度            bin.Write((byte)0);            //8颜色数(若像素位深>=8,填0。这是显然的,达到8bpp的颜色数最少是256,byte不够表示)            bin.Write((byte)0);            //9保留。必须为0            bin.Write((short)0);           //10-11调色板            bin.Write((short)32);          //12-13位深            bin.Write((int)msImg.Length);  //14-17位图数据大小            bin.Write(22);                 //18-21位图数据起始字节            //写图像数据            bin.Write(msImg.ToArray());            bin.Flush();            bin.Seek(0, SeekOrigin.Begin);            return new Icon(msIco);        }    }}

  

c# 转换Image为Icon