winform Excel导入进度条2

1.主界面

引用

using ExcelDataReader;
using System;
using System.ComponentModel;
using System.Data;
using System.IO;
using System.Threading;
using System.Windows.Forms;

namespace ExcelToolsWinform
{
    public partial class Form1 : Form
    {
        FileStream fs = null;
        IExcelDataReader excelReader = null;
        private DataTable dt = new DataTable();
        public Form1()
        {
            DevExpress.Data.CurrencyDataController.DisableThreadingProblemsDetection = true;//devexpress夸线程操作数据的解决方案
            InitializeComponent();
        }
        /// <summary>
        /// Excelr操作
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnImport_Click(object sender, EventArgs e)
        {
            OpenFileDialog fileDialog = new OpenFileDialog();
            fileDialog.Title = "请选择文件";
            fileDialog.Filter = "所有文件(*xls*)|*.xls*"; //设置要选择的文件的类型
            if (fileDialog.ShowDialog() == DialogResult.OK)
            {
                textEdit1.Text = fileDialog.FileName;
                dt = new DataTable();
                gridControl1.DataSource = null;
                //防止重复执行异步操作引发错误
                if (backgroundWorker1.IsBusy)
                    return;
                this.backgroundWorker1.RunWorkerAsync();  //运行backgroundWorker组件
                backgroundWorker1.WorkerReportsProgress = true;  //设置能报告进度更新
                backgroundWorker1.WorkerSupportsCancellation = true;  //设置支持异步取消
                ProgressForm form = new ProgressForm(this.backgroundWorker1);  //显示进度条窗体
                form.ShowDialog(this);
                form.Close();
            }
        }

        //在另一个线程上开始运行(处理进度条)
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            string[] columnName = { "col1", "col2", "col3", "col4", "col5", "col6", "col7", "col8" };
            try
            {
                fs = new FileStream(textEdit1.Text, FileMode.Open, FileAccess.Read);
                excelReader = ExcelReaderFactory.CreateOpenXmlReader(fs);
                //DataSet ds = excelReader.AsDataSet();
                int rowCount = excelReader.RowCount;//所有的行
                int readIndex = 0;
                //生成列头
                for (int i = 0; i <= columnName.Length - 1; i++)
                {
                    var name = columnName[i];
                    while (dt.Columns.Contains(name))
                    {
                        name = name + "_1";//重复行名称会报错。
                    }
                    dt.Columns.Add(new DataColumn(name, typeof(string)));
                }

                int rowIdx = 0;//第一行为标题 实际数据从第二行开始

                while (excelReader.Read())
                {
                    if (readIndex <= rowIdx)
                    {
                        ++readIndex;
                        continue;
                    }
                    DataRow dr = dt.NewRow();
                    int colNum = excelReader.FieldCount;
                    for (int iCol = 0; iCol <= columnName.Length - 1; iCol++)
                    {
                        if (iCol >= colNum)
                        {
                            continue;
                        }
                        dr[iCol] = excelReader.GetValue(iCol) == null ? "" : excelReader.GetValue(iCol).ToString();
                    }
                    dt.Rows.Add(dr);
                    Thread.Sleep(0); //不推迟取消按钮点不了，推迟的话数据量大后进度会缓慢
                    worker.ReportProgress(readIndex * 100 / rowCount);//加载进度条 
                    if (worker.CancellationPending)  // 如果用户取消则跳出处理数据代码 
                    {
                        e.Cancel = true;
                        break;
                    }
                    ++readIndex;
                }

                fs.Close();
                fs.Dispose();
                excelReader.Close();
                excelReader.Dispose();
            }
            catch (Exception ex)
            {
                if (worker.CancellationPending)  // 如果用户取消则跳出处理数据代码 
                {
                    e.Cancel = true;
                }
                if (fs != null)
                {
                    fs.Close();
                    fs.Dispose();
                }
                if (excelReader != null)
                {
                    excelReader.Close();
                    excelReader.Dispose();
                }
                throw new Exception("" + ex.Message);
            }
        }
        private void backgroundWorker1_DoWork1(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            for (int i = 0; i < 100; i++)
            {
                System.Threading.Thread.Sleep(100);
                worker.ReportProgress(i);
                if (worker.CancellationPending) //获取程序是否已请求取消后台操作
                {
                    e.Cancel = true;
                    break;
                }
            }
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Error != null)
            {
                MessageBox.Show(e.Error.Message);
            }
            else if (e.Cancelled)
            {
                dt = new DataTable(); //如果取消重新定义datatable
                this.labelControl4.Text = "取消" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
                MessageBox.Show("取消");
            }
            else
            {
                gridControl1.DataSource = dt;
                this.labelControl4.Text = "成功"+DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
                MessageBox.Show("完成");

            }
        }

        private void simpleButton1_Click(object sender, EventArgs e)
        {
            dt = new DataTable();
            //防止重复执行异步操作引发错误
            if (backgroundWorker1.IsBusy)
                return;
            this.backgroundWorker1.RunWorkerAsync();  //运行backgroundWorker组件
            backgroundWorker1.WorkerReportsProgress = true;  //设置能报告进度更新
            backgroundWorker1.WorkerSupportsCancellation = true;  //设置支持异步取消
            ProgressForm form = new ProgressForm(this.backgroundWorker1);  //显示进度条窗体
            form.ShowDialog(this);
            form.Close();
        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            gridView1.CloseEditor();
            gridView1.UpdateCurrentRow();
            var data = gridView1.DataSource;
        }
    }
}

 2.进度界面

using DevExpress.XtraEditors;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ExcelToolsWinform
{
    public partial class ProgressForm : DevExpress.XtraEditors.XtraForm
    {
        private BackgroundWorker backgroundWorker1; //ProgressForm窗体事件(进度条窗体)
        public ProgressForm(BackgroundWorker bgWork)
        {
            InitializeComponent();
            // add my code
            this.backgroundWorker1 = bgWork;
            //绑定进度条改变事件
            this.backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
            //绑定后台操作完成，取消，异常时的事件
            this.backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
        }
        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this.progressBar1.Value = e.ProgressPercentage;  //获取异步任务的进度百分比
        }

        void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            this.Close();  //执行完之后，直接关闭页面
        }

        //取消
        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.CancelAsync(); //请求取消挂起的后台操作
            this.btnCancel.Enabled = false;
            this.Close();
        }
    }
}

using ExcelDataReader;using System;using System.ComponentModel;using System.Data;using System.IO;using System.Threading;using System.Windows.Forms;
namespace ExcelToolsWinform{    public partial class Form1 : Form    {        FileStream fs = null;        IExcelDataReader excelReader = null;        private DataTable dt = new DataTable();        public Form1()        {            DevExpress.Data.CurrencyDataController.DisableThreadingProblemsDetection = true;//devexpress夸线程操作数据的解决方案            InitializeComponent();        }        /// <summary>        /// Excelr操作        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void btnImport_Click(object sender, EventArgs e)        {            OpenFileDialog fileDialog = new OpenFileDialog();            fileDialog.Title = "请选择文件";            fileDialog.Filter = "所有文件(*xls*)|*.xls*"; //设置要选择的文件的类型            if (fileDialog.ShowDialog() == DialogResult.OK)            {                textEdit1.Text = fileDialog.FileName;                dt = new DataTable();                gridControl1.DataSource = null;                //防止重复执行异步操作引发错误                if (backgroundWorker1.IsBusy)                    return;                this.backgroundWorker1.RunWorkerAsync();  //运行backgroundWorker组件                backgroundWorker1.WorkerReportsProgress = true;  //设置能报告进度更新                backgroundWorker1.WorkerSupportsCancellation = true;  //设置支持异步取消                ProgressForm form = new ProgressForm(this.backgroundWorker1);  //显示进度条窗体                form.ShowDialog(this);                form.Close();            }        }
        //在另一个线程上开始运行(处理进度条)        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)        {            BackgroundWorker worker = sender as BackgroundWorker;            string[] columnName = { "col1", "col2", "col3", "col4", "col5", "col6", "col7", "col8" };            try            {                fs = new FileStream(textEdit1.Text, FileMode.Open, FileAccess.Read);                excelReader = ExcelReaderFactory.CreateOpenXmlReader(fs);                //DataSet ds = excelReader.AsDataSet();                int rowCount = excelReader.RowCount;//所有的行                int readIndex = 0;                //生成列头                for (int i = 0; i <= columnName.Length - 1; i++)                {                    var name = columnName[i];                    while (dt.Columns.Contains(name))                    {                        name = name + "_1";//重复行名称会报错。                    }                    dt.Columns.Add(new DataColumn(name, typeof(string)));                }
                int rowIdx = 0;//第一行为标题 实际数据从第二行开始
                while (excelReader.Read())                {                    if (readIndex <= rowIdx)                    {                        ++readIndex;                        continue;                    }                    DataRow dr = dt.NewRow();                    int colNum = excelReader.FieldCount;                    for (int iCol = 0; iCol <= columnName.Length - 1; iCol++)                    {                        if (iCol >= colNum)                        {                            continue;                        }                        dr[iCol] = excelReader.GetValue(iCol) == null ? "" : excelReader.GetValue(iCol).ToString();                    }                    dt.Rows.Add(dr);                    Thread.Sleep(0); //不推迟取消按钮点不了，推迟的话数据量大后进度会缓慢                    worker.ReportProgress(readIndex * 100 / rowCount);//加载进度条                     if (worker.CancellationPending)  // 如果用户取消则跳出处理数据代码                     {                        e.Cancel = true;                        break;                    }                    ++readIndex;                }
                fs.Close();                fs.Dispose();                excelReader.Close();                excelReader.Dispose();            }            catch (Exception ex)            {                if (worker.CancellationPending)  // 如果用户取消则跳出处理数据代码                 {                    e.Cancel = true;                }                if (fs != null)                {                    fs.Close();                    fs.Dispose();                }                if (excelReader != null)                {                    excelReader.Close();                    excelReader.Dispose();                }                throw new Exception("" + ex.Message);            }        }        private void backgroundWorker1_DoWork1(object sender, DoWorkEventArgs e)        {            BackgroundWorker worker = sender as BackgroundWorker;            for (int i = 0; i < 100; i++)            {                System.Threading.Thread.Sleep(100);                worker.ReportProgress(i);                if (worker.CancellationPending) //获取程序是否已请求取消后台操作                {                    e.Cancel = true;                    break;                }            }        }
        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)        {            if (e.Error != null)            {                MessageBox.Show(e.Error.Message);            }            else if (e.Cancelled)            {                dt = new DataTable(); //如果取消重新定义datatable                this.labelControl4.Text = "取消" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");                MessageBox.Show("取消");            }            else            {                gridControl1.DataSource = dt;                this.labelControl4.Text = "成功"+DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");                MessageBox.Show("完成");
            }        }
        private void simpleButton1_Click(object sender, EventArgs e)        {            dt = new DataTable();            //防止重复执行异步操作引发错误            if (backgroundWorker1.IsBusy)                return;            this.backgroundWorker1.RunWorkerAsync();  //运行backgroundWorker组件            backgroundWorker1.WorkerReportsProgress = true;  //设置能报告进度更新            backgroundWorker1.WorkerSupportsCancellation = true;  //设置支持异步取消            ProgressForm form = new ProgressForm(this.backgroundWorker1);  //显示进度条窗体            form.ShowDialog(this);            form.Close();        }
        private void btnSave_Click(object sender, EventArgs e)        {            gridView1.CloseEditor();            gridView1.UpdateCurrentRow();            var data = gridView1.DataSource;        }    }}