更有效的从值显示情商图像的代码

Question

基本上，我所做的是使用NAudio获取峰值信息。我已经制作了一组20张图片来代表情商。我做了一些代码来检查峰值，并使用计时器实时更改picturebox中的图像。虽然有时我看到视觉滞后，我认为代码是相当低效的。有比这大块ifs更有效的代码吗？

private void EQ_TIMER_Tick(object sender, EventArgs e)
    {
        int vol = (int)((float)(device.AudioMeterInformation.MasterPeakValue * 100));
        if ((vol > 0) && (vol < 5))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ5;
        }
        else if ((vol > 5) && (vol < 10))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ10;
        }
        else if ((vol > 10) && (vol < 15))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ15;
        }
        else if ((vol > 15) && (vol < 20))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ20;
        }
        else if ((vol > 20) && (vol < 25))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ25;
        }
        else if ((vol > 25) && (vol < 30))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ30;
        }
        else if ((vol > 30) && (vol < 35))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ35;
        }
        else if ((vol > 35) && (vol < 40))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ40;
        }
        else if ((vol > 40) && (vol < 45))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ45;
        }
        else if ((vol > 45) && (vol < 50))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ50;
        }
        else if ((vol > 50) && (vol < 55))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ55;
        }
        else if ((vol > 55) && (vol < 60))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ60;
        }
        else if ((vol > 60) && (vol < 65))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ65;
        }
        else if ((vol > 65) && (vol < 70))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ70;
        }
        else if ((vol > 70) && (vol < 75))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ75;
        }
        else if ((vol > 75) && (vol < 80))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ80;
        }
        else if ((vol > 80) && (vol < 85))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ85;
        }
        else if ((vol > 85) && (vol < 90))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ90;
        }
        else if ((vol > 90) && (vol < 95))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ95;
        }
        else if ((vol > 95) && (vol < 100))
        {
            WINGS_FRAME.Image = Properties.Resources.RES_EQ100;
        }
        else if (vol == 0)
        {
            WINGS_FRAME.Image = null;
        }
    }

Answer 1

试着做这样的事情：

int vol = 38;
int imgnum = vol/5*5;
string imgname = string.Format("RES_EQ{0}", imgnum);

var image = Properties.Resources.ResourceManager.GetObject(imgname);

整数除法将卷“舍入”到一个步数，然后乘以5，得到图像的实际数字。