DevExpress show wait form

WaitForm.cs

public partial class WaitForm : DevExpress.XtraWaitForm.WaitForm
    {


        private static WaitForm waitForm;

        /// <summary>
        /// 标识等待窗口是否关闭
        /// </summary>
        private static bool isClose = false;


        private static bool isCreateThread = false;

        private static ManualResetEvent waitLock = new ManualResetEvent(false);
        private static ManualResetEvent loadLock = new ManualResetEvent(false);

        private static Stack<WaitFormAction> StackAction = new Stack<WaitFormAction>();

        private class WaitFormAction
        {
            public enum EnumAction
            {
                Show = 0,
                Close = 1,
                Wait = 2
            }

            public WaitFormAction(EnumAction action)
            {
                this.Action = action;
            }

            public EnumAction Action { get; set; }
            public string Description { get; set; }
            public string Caption { get; set; }
            public int SleepForShow { get; set; }

        }

        public WaitForm(string description,string caption)
        {
            InitializeComponent();
            SetDescription(description);
            SetCaption(caption);
        }

        #region 显示Loading窗口
        /// <summary>
        /// 显示Loading窗口
        /// </summary>
        /// <param name="description"></param>
        /// <param name="caption"></param>
        /// <param name="sleepForShow"></param>
        public static void ShowWaitForm(string description = "加载中", string caption = "请稍等", int sleepForShow = 100)
        {
            isClose = false;
            StackAction.Clear();
            StackAction.Push(new WaitFormAction(WaitFormAction.EnumAction.Show)
                                 {
                                     Description = description,
                                     Caption = caption,
                                     SleepForShow = sleepForShow
                                 });//添加到栈中

            if (!isCreateThread) //如果线程没有创建
            {
                waitLock.Reset();
                isCreateThread = true;
                Thread thread = new Thread(Running) { IsBackground = true };
                thread.Start();
            }
            else
            {
                waitLock.Set();
            }

        } 
        #endregion

        #region 关闭Loading窗口
        /// <summary>
        /// 关闭Loading窗口
        /// </summary>
        public static void CloseWaitForm()
        {
            isClose = true;
            StackAction.Clear();
            StackAction.Push(new WaitFormAction(WaitFormAction.EnumAction.Close));
            waitLock.Set();
        } 
        #endregion

        #region 线程处理Loading窗口
        /// <summary>
        /// 线程处理Loading窗口
        /// </summary>
        private static void Running()
        {
            while (true)
            {
                if (StackAction.Count > 0)
                {
                    WaitFormAction waitFormAction;
                    lock (StackAction)
                    {
                        waitFormAction = StackAction.Pop();
                    }

                    #region Show
                    if (waitFormAction.Action == WaitFormAction.EnumAction.Show)
                    {
                        if (waitForm != null)
                        {
                            if (isClose)
                                continue;
                            try
                            {
                                ReSetContent(waitFormAction.Description, waitFormAction.Caption,
                                             waitFormAction.SleepForShow);
                            }
                            catch
                            {

                            }
                        }
                        else
                        {
                            if (waitFormAction.SleepForShow != 0)
                            {
                                Thread.Sleep(waitFormAction.SleepForShow);
                            }
                            if (isClose)
                                continue;
                            loadLock.Reset();
                            Thread thread = new Thread(() =>
                                            {
                                                waitForm = new WaitForm(waitFormAction.Description,
                                                                        waitFormAction.Caption);
                                                Application.Run(waitForm);
                                            }) { IsBackground = true };

                            thread.Start();
                            loadLock.WaitOne();
                        }
                    }
                    #endregion

                    #region Close
                    else if (waitFormAction.Action == WaitFormAction.EnumAction.Close)
                    {
                        try
                        {
                            if (waitForm != null)
                            {
                                waitForm.Invoke((MethodInvoker)(() => waitForm.Hide()));
                                isClose = true;
                            }
                        }
                        catch (Exception)
                        {
                        }
                    }
                    #endregion

                }
                else
                {
                    waitLock.Reset();
                    waitLock.WaitOne();
                }
            }
        } 
        #endregion

        #region 设置Loading窗口的descrition和caption
        /// <summary>
        /// 设置Loading窗口的descrition和caption
        /// </summary>
        /// <param name="descrition">Loading窗口的descrition</param>
        /// <param name="caption">Loading窗口的caption</param>
        /// <param name="sleepForShow">Loading窗口延迟多少秒出现</param>
        private static void ReSetContent(string descrition, string caption, int sleepForShow)
        {
            if (waitForm != null)
            {
                try
                {
                    waitForm.SetContentInvoke(descrition, caption, sleepForShow);
                }
                catch (Exception)
                {

                }
            }
        }

        private void SetContentInvoke(string description, string caption, int sleepForShow)
        {
            this.Invoke(new ReSetContentDelete(SetCaption), caption);
            this.Invoke(new ReSetContentDelete(SetDescription), description);
            Thread.Sleep(sleepForShow);
            if (isClose)
                return;
            this.Invoke((MethodInvoker)(() =>
            {
                this.Show();
                this.Activate();
            }));
        }
        #endregion
        
        private delegate void ReSetContentDelete(string content);

        public override sealed void SetCaption(string caption)
        {
            this.progressPanel1.Caption = caption;
        }

        public override sealed void SetDescription(string description)
        {
            this.progressPanel1.Description = description;
        }

        private void WaitForm_Shown(object sender, EventArgs e)
        {
            this.Activate();
            loadLock.Set();
        }
    }

WaitForm.designer.cs

namespace AbpCodeBulider.DxUI
{
    partial class WaitForm
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
            this.progressPanel1 = new DevExpress.XtraWaitForm.ProgressPanel();
            this.tableLayoutPanel1.SuspendLayout();
            this.SuspendLayout();
            // 
            // tableLayoutPanel1
            // 
            this.tableLayoutPanel1.AutoSize = true;
            this.tableLayoutPanel1.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
            this.tableLayoutPanel1.BackColor = System.Drawing.Color.Transparent;
            this.tableLayoutPanel1.ColumnCount = 1;
            this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));
            this.tableLayoutPanel1.Controls.Add(this.progressPanel1, 0, 0);
            this.tableLayoutPanel1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.tableLayoutPanel1.Location = new System.Drawing.Point(0, 0);
            this.tableLayoutPanel1.Name = "tableLayoutPanel1";
            this.tableLayoutPanel1.Padding = new System.Windows.Forms.Padding(0, 14, 0, 14);
            this.tableLayoutPanel1.RowCount = 1;
            this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
            this.tableLayoutPanel1.Size = new System.Drawing.Size(299, 73);
            this.tableLayoutPanel1.TabIndex = 2;
            // 
            // progressPanel1
            // 
            this.progressPanel1.Appearance.BackColor = System.Drawing.Color.Transparent;
            this.progressPanel1.Appearance.Options.UseBackColor = true;
            this.progressPanel1.AppearanceCaption.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
            this.progressPanel1.AppearanceCaption.Options.UseFont = true;
            this.progressPanel1.AppearanceDescription.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F);
            this.progressPanel1.AppearanceDescription.Options.UseFont = true;
            this.progressPanel1.AutoHeight = true;
            this.progressPanel1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.progressPanel1.ImageHorzOffset = 20;
            this.progressPanel1.Location = new System.Drawing.Point(0, 17);
            this.progressPanel1.Margin = new System.Windows.Forms.Padding(0, 3, 0, 3);
            this.progressPanel1.Name = "progressPanel1";
            this.progressPanel1.Size = new System.Drawing.Size(299, 39);
            this.progressPanel1.TabIndex = 0;
            this.progressPanel1.Text = "progressPanel1";
            // 
            // WaitForm
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.AutoSize = true;
            this.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
            this.ClientSize = new System.Drawing.Size(299, 73);
            this.Controls.Add(this.tableLayoutPanel1);
            this.DoubleBuffered = true;
            this.Name = "WaitForm";
            this.Text = "WaitForm";
            this.Shown += new System.EventHandler(this.WaitForm_Shown);
            this.tableLayoutPanel1.ResumeLayout(false);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;
        private DevExpress.XtraWaitForm.ProgressPanel progressPanel1;
    }
}

see https://gitee.com/liminghui/AbpCodeBulider/blob/master/AbpCodeBulider.DxUI/WaitForm.cs