C:如何获取特定文件的图标?

首先,有多种尺寸的图像,其中一些比其他更容易获得。如果您想要“标准”尺寸的(我相信是32x32)并且可以使用WPF(引用PresentationCore),这是一个很好的方法:

public System.Windows.Media.ImageSource Icon
{
    get
    {
        if (icon == null && System.IO.File.Exists(Command))
        {
            using (System.Drawing.Icon sysicon = System.Drawing.Icon.ExtractAssociatedIcon(Command))
            {
                // This new call in WPF finally allows us to read/display 32bit Windows file icons!
                icon = System.Windows.Interop.Imaging.CreateBitmapSourceFromHIcon(
                  sysicon.Handle,
                  System.Windows.Int32Rect.Empty,
                  System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());
            }
        }

        return icon;
    }
}

System.Drawing.Icon icon = System.Drawing.Icon.ExtractAssociatedIcon(filePath);