C/S 进度条和跨页面传值的联合使用

来源：互联网发布：mac如何截图保存编辑：程序博客网时间：2024/06/05 08:01

在C/S项目中，通常会遇到一些耗时的操作，这个时候为了更好的客户体验，我们通常会加上一个进度条。而且页面传值在C/S端也比较麻烦。毕竟不像B/S那样可以使用Session、QueryString、Cookie，或者提交表格等那么方便。

开始了：
这里写图片描述
页面很简单，同样这里还有一个backgroundWorker类

using System;using System.ComponentModel;using System.Windows.Forms;using System.Threading;namespace QuickLogisticsAssistant{    public partial class BackgroundWorkerView : Form    {        public delegate void Action<in T1, in T2>(T1 arg1,T2 arg2);        public Action<BackgroundWorker, DoWorkEventArgs> DoWork { get; private set; }        public Action<BackgroundWorker, RunWorkerCompletedEventArgs> RunWorkerCompleted { get; private set; }        public RunWorkerCompletedEventArgs ExecutionResult { get; private set; }        public ApartmentState ThreadApartmentState { get; set; }        public BackgroundWorkerView(Action<BackgroundWorker, DoWorkEventArgs> doWork, Action<BackgroundWorker, RunWorkerCompletedEventArgs> runWorkerCompleted = null)        {            this.ThreadApartmentState = ApartmentState.MTA;            InitializeComponent();            this.Text = string.Format("{0} - 正在执行操作...", Application.ProductName);            this.DoWork = doWork;            this.RunWorkerCompleted = runWorkerCompleted;            this.progressBar1.Style = ProgressBarStyle.Marquee;        }        public BackgroundWorkerView(string title, Action<BackgroundWorker, DoWorkEventArgs> doWork, Action<BackgroundWorker, RunWorkerCompletedEventArgs> runWorkerCompleted = null)        {            this.ThreadApartmentState = ApartmentState.MTA;            InitializeComponent();            //this.Text = string.Format("正在{0}...", title);            this.Text = title;            this.DoWork = doWork;            this.RunWorkerCompleted = runWorkerCompleted;            this.progressBar1.Style = ProgressBarStyle.Marquee;        }        public BackgroundWorkerView(int upperBound, Action<BackgroundWorker, DoWorkEventArgs> doWork, Action<BackgroundWorker, RunWorkerCompletedEventArgs> runWorkerCompleted = null)        {                        this.ThreadApartmentState = ApartmentState.MTA;            InitializeComponent();            this.Text = string.Format("{0} - 正在执行操作...", Application.ProductName);            this.DoWork = doWork;            this.RunWorkerCompleted = runWorkerCompleted;            this.progressBar1.Style = ProgressBarStyle.Continuous;            this.backgroundWorker1.WorkerReportsProgress = true;            this.progressBar1.Minimum = 0;            this.progressBar1.Maximum = upperBound;        }        public void RunWorkerAsync()        {            this.backgroundWorker1.RunWorkerAsync();        }        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)        {            if (this.ThreadApartmentState == ApartmentState.STA)            {                Exception error = null;                Thread th = new Thread(                    delegate()                    {                        try                        {                            this.DoWork(sender as BackgroundWorker, e);                        }                        catch (Exception exception)                        {                            error = exception;                        }                    });                th.SetApartmentState(ApartmentState.STA);                th.Start();                th.Join();                if (error != null)                    throw error;            }            else                this.DoWork(sender as BackgroundWorker, e);        }        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)        {            if (this.RunWorkerCompleted != null)                this.RunWorkerCompleted(sender as BackgroundWorker, e);            this.ExecutionResult = e;            //这一步是设置当前窗体为对话框，这样就可以将上面的Error传出去了            this.DialogResult = System.Windows.Forms.DialogResult.OK;            this.Close();        }        private void BackgroundWorkerView_FormClosing(object sender, FormClosingEventArgs e)        {            if (this.backgroundWorker1.IsBusy)            {                this.backgroundWorker1.CancelAsync();            }        }        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)        {            if (e.ProgressPercentage == this.progressBar1.Maximum)                this.progressBar1.Style = ProgressBarStyle.Marquee;            else                this.progressBar1.Increment(e.ProgressPercentage);        }        private void BackgroundWorkerView_Load(object sender, EventArgs e)        {            this.RunWorkerAsync();        }    }}

接下来看调用的方面：

   _dicExcelInfo = new Dictionary<string, FileTableInfo>();            if (_selectFiles == null || _selectFiles.Count == 0)            {                MessageBox.Show("请选择文件！");                return;            }            //文件预处理，简单的判断是否完整            Application.DoEvents();            bool checkFail = false;            //这里调用该进度条窗体。此时，当里面的内容运行完，该窗体才关闭。            BackgroundWorkerView view = new BackgroundWorkerView("正在检查选择的文件是否完整...", (worker, arg) =>            {                foreach (var item in _selectFiles)                {                    FileTableInfo zhi = ExcelHelper.CheckToExcel(item);                    if (!_dicExcelInfo.ContainsKey(zhi.TradeDate))                    {                        _dicExcelInfo.Add(zhi.TradeDate, zhi);                    }                    else                    {                        if (zhi.XYFZBFlag)                        {                            //当前文件是信用负债文件                            if (!_dicExcelInfo[zhi.TradeDate].XYFZBFlag)                            {                                //如果已经存在的当天的数据文件中，信用负债文件flag为负，则说明上一个文件不是信用负债文件                                _dicExcelInfo[zhi.TradeDate].XYFZBFlag = zhi.XYFZBFlag;                                _dicExcelInfo[zhi.TradeDate].XYFZBFile = zhi.XYFZBFile;                            }                            else                            {                                //导入了多个同一天的信用负债文件                                MessageBox.Show(string.Format("选择了多个[{0}]的信用负债文件", zhi.TradeDate));                                checkFail = true;                                return;                            }                        }                        if (zhi.JYBFlag)                        {                            //当前文件是交易数据文件                            if (!_dicExcelInfo[zhi.TradeDate].JYBFlag)                            {                                _dicExcelInfo[zhi.TradeDate].JYBFlag = zhi.JYBFlag;                                _dicExcelInfo[zhi.TradeDate].JYBFile = zhi.JYBFile;                            }                            else                            {                                //导入了多个同一天的交易文件                                MessageBox.Show(string.Format("选择了多个[{0}]的交易数据文件", zhi.TradeDate));                                //view.ExecutionResult = new RunWorkerCompletedEventArgs(false, new Exception(string.Format("选择了多个[{0}]的交易数据文件", zhi.TradeDate)), true);                                checkFail = true;                                return;                            }                        }                    }                }            });        //设置进度条窗体为显示为对话框            var ret = view.ShowDialog();            if (ret == System.Windows.Forms.DialogResult.OK)            {            //如果错误不为空,则弹出错误信息                if (view.ExecutionResult.Error != null)                {                    MessageBox.Show(view.ExecutionResult.Error.Message);                    return;                }            }            if (ret == System.Windows.Forms.DialogResult.Cancel)            {                _dicExcelInfo = new Dictionary<string, FileTableInfo>();                return;            }            if (checkFail)            {                //检查失败                return;            }            string msg = "";            foreach (var tradeDate in _dicExcelInfo.Keys)            {                FileTableInfo exInfo = _dicExcelInfo[tradeDate];                if (exInfo.XYFZBFlag && exInfo.JYBFlag)                {                    continue;                }                else if (!exInfo.XYFZBFlag)                {                    msg += "日期为：" + tradeDate + " 缺失交易数据的文件  \r\n";                }                else if (!exInfo.JYBFlag)                {                    msg += "日期为：" + tradeDate + " 缺失信用账户数据的文件 \r\n";                }            }            if (!string.IsNullOrEmpty(msg))            {                MessageBox.Show(msg);                return;            }     //这一步是设置当前窗体为对话框，这一步是跨页面传值的重要的异步            this.DialogResult = System.Windows.Forms.DialogResult.OK;            this.Close();

调用ImportData页面的信息

    ImportData imp = new ImportData();            if (imp.ShowDialog() == System.Windows.Forms.DialogResult.OK)            {                //选择了一批文件                Dictionary<string, FileTableInfo> dicSelectFiles = imp.DicExcelInfo;

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