我使用以下代码作为我将来如何使用自定义进度条的测试 - 它实际上根本不是进度条,而是代码绘制的图片框矩形打开,然后根据计时器填写。
问题是,在填充框之前我达到了100%。我已经修好了,但找不到问题。我究竟做错了什么?请参阅下面的代码,并在我的系统上显示行为的屏幕截图。
感谢。
public partial class frmLoading : Form
{
System.Windows.Forms.Timer tLoading = new System.Windows.Forms.Timer();
Double pbLoadingUnit;
int pbLoadingWIDTH, pbLoadingHEIGHT, pbLoadingComplete;
Bitmap bmpLoading;
Graphics gLoading;
private void frmLoading_Load(object sender, EventArgs e)
{
pbLoadingWIDTH = pictureLoading.Width;
pbLoadingHEIGHT = pictureLoading.Height;
pbLoadingUnit = pbLoadingWIDTH / 100;
pbLoadingComplete = 0;
bmpLoading = new Bitmap(pbLoadingWIDTH, pbLoadingHEIGHT);
tLoading.Interval = 32;
tLoading.Tick += new EventHandler(this.tLoading_Tick);
tLoading.Start();
}
private void tLoading_Tick(object sender, EventArgs e)
{
gLoading = Graphics.FromImage(bmpLoading);
gLoading.Clear(Color.DarkSlateGray);
gLoading.FillRectangle(Brushes.DodgerBlue, new Rectangle(0, 0, (int)(pbLoadingComplete * pbLoadingUnit), pbLoadingHEIGHT));
gLoading.DrawString(pbLoadingComplete + "%", new Font("Segoe UI Semibold", pbLoadingHEIGHT / 2), Brushes.White, new PointF(pbLoadingWIDTH / 2 - pbLoadingHEIGHT, pbLoadingHEIGHT / 10));
pictureLoading.Image = bmpLoading;
pbLoadingComplete++;
if (pbLoadingComplete > 100)
{
gLoading.Dispose();
tLoading.Stop();
}
}
答案 0 :(得分:1)
你应该改变这个
pbLoadingUnit = pbLoadingWIDTH / 100;
到这个
pbLoadingUnit = Convert.ToDouble(pbLoadingWIDTH) / 100;
我认为你的图片宽度不是一百的倍数。 使用旧代码,您的pbLoadingUnit将生成为整数,因为您将整数除以整数。
您也可以使用它:
double div = 100;
pbLoadingUnit = pbLoadingWIDTH / div;
OR
pbLoadingUnit = pbLoadingWIDTH / Convert.ToDouble(100);
关键是,您应该获得double
的{{1}}值。
有关数字投射的详细信息,您可能会看到此链接dotnetperls.com/numeric-casts
答案 1 :(得分:0)
尝试将以下行放在 /home/vagrant/portal-api/portal-api/node_modules/express/lib/router/index.js:458
throw new TypeError('Router.use() requires middleware function but got a
^
TypeError: Router.use() requires middleware function but got a Object
at Function.use (/home/vagrant/portal-api/portal-api/node_modules/express/lib/router/index.js:458:13)
at EventEmitter.<anonymous> (/home/vagrant/portal-api/portal-api/node_modules/express/lib/application.js:219:21)
at Array.forEach (native)
at EventEmitter.use (/home/vagrant/portal-api/portal-api/node_modules/express/lib/application.js:216:7)
at Object.<anonymous> (/home/vagrant/portal-api/portal-api/app.js:31:5)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
的{{1}}事件中:
OnResize()
您可能会在frmLoading
期间获得pbLoadingWIDTH = pictureLoading.Width;
pbLoadingHEIGHT = pictureLoading.Height;
pbLoadingUnit = pbLoadingWIDTH / 100;
的初始尺寸...而不是在您的表单中显示并显示的实际pictureLoading
。
如果您已获得相应的Load()
width
个tloading.Start()
对象,请size
发生。
答案 2 :(得分:0)
你必须在int pbmodal中添加这个变量; 然后计算单位的MOD
表单加载
pbmodal = pbLoadingWIDTH%100;
当完成时100%添加模态。
分裂差异
`if(pbLoadingComplete&gt; 100)
{ gLoading.FillRectangle(Brushes.DodgerBlue,new Rectangle(0,0,(int)(pbLoadingComplete * pbLoadingUnit)+ pbmodal,pbLoadingHEIGHT)); gLoading.DrawString(pbLoadingComplete-1 +“%”,new Font(“Segoe UI Semibold”,pbLoadingHEIGHT / 2),Brushes.White,new PointF(pbLoadingWIDTH / 2 - pbLoadingHEIGHT,pbLoadingHEIGHT / 10)); pictureLoading.Image = bmpLoading; }`