winfrom创建转圈等待窗体

 

第一步：创建一个WaitForm

public partial class WaitForm : Form
    {
        private int count = -1;
        private ArrayList images = new ArrayList();
        public Bitmap[] bitmap = new Bitmap[8];
        private int _value = 1;
        private Color _circleColor = Color.Red;
        private float _circleSize = 0.8f;
        private bool disposed = false;
        public WaitForm()
        {
            InitializeComponent();
            Instance = this;
            ShowInTaskbar = false;
        }

        public Color CircleColor
        {
            get { return _circleColor; }
            set
            {
                _circleColor = value;
                Invalidate();
            }
        }

        public float CircleSize
        {
            get { return _circleSize; }
            set
            {
                if (value <= 0.0F)
                    _circleSize = 0.05F;
                else
                    _circleSize = value > 4.0F ? 4.0F : value;
                Invalidate();
            }
        }

        public Bitmap DrawCircle(int j)
        {
            const float angle = 360.0F / 8; Bitmap map = new Bitmap(200, 200);
            Graphics g = Graphics.FromImage(map);

            g.TranslateTransform(300 / 2.0F, 300 / 2.0F);
            g.RotateTransform(angle * _value);
            g.InterpolationMode = InterpolationMode.HighQualityBicubic;
            g.SmoothingMode = SmoothingMode.AntiAlias;
            int[] a = new int[8] { 25, 50, 75, 100, 125, 150, 175, 200 };
            for (int i = 1; i <= 8; i++)
            {
                int alpha = a[(i + j - 1) % 8];
                Color drawColor = Color.FromArgb(alpha, _circleColor);
                using (SolidBrush brush = new SolidBrush(drawColor))
                {
                    float sizeRate = 3.5F / _circleSize;
                    float size = 300 / (6 * sizeRate);

                    float diff = (300 / 10.0F) - size;

                    float x = (300 / 80.0F) + diff;
                    float y = (300 / 80.0F) + diff;
                    g.FillEllipse(brush,x,y, size, size);
                    g.RotateTransform(angle);
                }
            }
            return map;
        }


        public void Draw()
        {
            for (int j = 0; j < 8; j++)
            {
                bitmap[7 - j] = DrawCircle(j);
            }
        }
        protected override void OnResize(EventArgs e)
        {
            SetNewSize();
            base.OnResize(e);
        }

        protected override void OnSizeChanged(EventArgs e)
        {
            SetNewSize();
            base.OnSizeChanged(e);
        }

        private void SetNewSize()
        {
            int size = Math.Max(Width, Height);
            Size = new Size(size, size);
        }

        public void set()
        {
            for (int i = 0; i < 8; i++)
            {
                Draw();

                //Bitmap map = new Bitmap((bitmap[i]), new Size(300, 300));

                images.Add(bitmap[i]);
            }
            pictureBoxWait.Image = (Image)images[0];
            pictureBoxWait.Size = pictureBoxWait.Image.Size;

        }
        private void pictureBox_Click(object sender, EventArgs e)
        {
            this.Visible = false;
            base.Dispose();
        }

        private void Timer_Tick(object sender, EventArgs e)
        {
            Invoke(new Action(() =>
            {
                foreach (Bitmap item in bitmap)
                {
                    if (item != null)
                    {
                        item.Dispose();
                    }
                }
                images.Clear();
                set();
                count = (count + 1) % 8;
                pictureBoxWait.Image = (Image)images[count];
            }));
           

        }
        public  void ShowForm()
        {
            Invoke(new Action(() =>
            {
                Activate();
                Show();
            }));
        }
        public void StopWait()
        {
            Invoke(new Action(() => { Hide(); }));

        }
        private void button1_Click(object sender, EventArgs e)
        {
            this.Visible = false;
            base.Dispose();
        }
        public static WaitForm Instance = null;
        private void WaitForm_Load(object sender, EventArgs e)
        {
            Invoke(new Action(() =>
            { 
                
                pictureBoxWait.Left = Width / 2 - 150;
                pictureBoxWait.Top = Height / 2 - 150;
                pictureBoxWait.Width = 300;
                pictureBoxWait.Height = 300;
            }));
            
        }

        private void WaitForm_KeyDown(object sender, KeyEventArgs e)
        {
            Invoke(new Action(() =>
            {
                if (e.KeyCode == Keys.T)
                {
                    this.Close();
                }
            }));
            

        }
    }

第二步：使用方法

在MainForm 初始化地方开启线程调用

  tdWait = new Thread(() => { Application.Run(new WaitForm()); });
  tdWait.IsBackground = true;
  tdWait.Start();

第三步：在需要使用的地方使用

WaitForm.Instance.ShowForm();
AppointModels appModels = new AppointModels();
ResultModels result = HISManager.DownloadAppointData(JsonConvert.SerializeObject(appModels));
WaitForm.Instance.StopWait();

第四步：在MainForm Close 的地方关闭线程

 if (tdWait != null)
 {
     tdWait.Abort();
     tdWait = null;
 }