lserp_cs_5.0/插件库/Lskj.Attachments/Lskj.Attachments/frmUpload.cs

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

namespace Lskj.FileManager
{
    public partial class frmUpload : Form
    {
        private bool isUploading = false;
        private string fileNumTip = "上传进度({0}/{1})"; // {0}:已上传数量,{1}:总数
        private string webServiceUrl = @"http://localhost:10518/WebService.asmx";
        private DataTable dtTable = new DataTable();


        public frmUpload()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void frmMain_Load(object sender, EventArgs e)
        {
            dtTable.Columns.Add("fileIndex");
            dtTable.Columns.Add("fileName");
            dtTable.Columns.Add("fileSize");
            dtTable.Columns.Add("fileState");
        }
        /// <summary>
        /// 选择文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnBrowse_Click(object sender, EventArgs e)
        {
            if (ofdFile.ShowDialog() == DialogResult.OK)
            {
                foreach (string item in ofdFile.FileNames)
                {
                    DataRow newRow = dtTable.NewRow();
                    newRow["fileIndex"] = dtTable.Rows.Count + 1;
                    newRow["fileName"] = item;
                    newRow["fileSize"] = new FileInfo(item).Length;
                    newRow["fileState"] = isUploading ? "等待上传" : "未上传";
                    dtTable.Rows.Add(newRow);
                }
                this.lblNum.Text = string.Format(fileNumTip, 0, dtTable.Rows.Count);
                this.dgvMain.DataSource = dtTable;
            }
        }
        /// <summary>
        /// 转换为KB
        /// </summary>
        /// <param name="length"></param>
        /// <returns></returns>
        private string getFileSize(long length)
        {
            string fileSize = "0";
            if (length != 0)
            {
                try
                {
                    fileSize = Math.Round(Convert.ToDecimal(length / 1024), 0, MidpointRounding.AwayFromZero).ToString("n").Replace(".00", "");
                }
                catch (Exception ex)
                {

                }
            }
            return fileSize;
        }
        /// <summary>
        /// 清空文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnClear_Click(object sender, EventArgs e)
        {
            if (!isUploading)
            {
                dtTable.Rows.Clear();
                dgvMain.DataSource = dtTable;
            }
            else
            {
                XtraMessageBox.Show("正在上传文件中,无法清空");
            }            
        }
        /// <summary>
        /// 文件上传
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnUpload_Click(object sender, EventArgs e)
        {
            if (!isUploading)
            {
                Thread mThread = new Thread(UploadFiles);
                mThread.Start();
            }
            else
            {
                XtraMessageBox.Show("正在上传文件.");
            }
        }
        /// <summary>
        /// 文件上传
        /// </summary>
        private void UploadFiles()
        {
            try
            {
                if (dtTable.Rows.Count == 0)
                {
                    XtraMessageBox.Show("请先浏览文件.");
                    return;
                }
                Type type = null;
                try
                {
                    type = WSHelper.InvokeWebService(webServiceUrl);
                }
                catch (Exception ex)
                {
                    XtraMessageBox.Show("WebService服务调用失败." + Environment.NewLine + ex.Message);
                }
                isUploading = true;
                // 开始上传
                int rowCount = 1;
                // 调整状态
                foreach (DataRow item in dtTable.Rows)
                {
                    if (item["fileState"] + "" != "成功")
                        item["fileState"] = "等待上传";
                }

                foreach (DataRow item in dtTable.Rows)
                {
                    string fileState = item["fileState"] + "";
                    string fileName = item["fileName"] + "";
                    string fileSize = item["fileSize"] + "";
                    
                    if (fileState == "成功")
                        continue;
                    if (!File.Exists(fileName))
                        item["fileState"] = "文件未找到";

                    item["fileState"] = "上传中...";
                    bool isSuccessed = true;

                    using (FileStream mStream = File.OpenRead(fileName))
                    {
                        long mFileLength = mStream.Length;
                        if (mFileLength <= 0)
                        {
                            item["fileState"] = "文件为空，无需上传";
                            isSuccessed = false;
                            continue;
                        }
                        int mUploadCount = Convert.ToInt32(mFileLength / 1024) + 1;
                        // 初始化进度条
                        Invoke((EventHandler)delegate
                        {
                            this.progressBar1.Maximum = mUploadCount;
                            this.progressBar1.Value = 0;
                        });

                        byte[] mFileContent = new byte[1024];

                        for (int i = 0; i < mUploadCount; i++)
                        {
                            Invoke((EventHandler)delegate
                            {
                                this.progressBar1.Value = i + 1;
                            });

                            mStream.Read(mFileContent, 0, 1024);
                            bool mIsAppend = i != 0;

                            object obj = WSHelper.InvokeMethod(type, "UploadFile", new object[] { Path.GetFileName(fileName), mFileContent, mIsAppend });

                            if (!string.IsNullOrEmpty(obj + ""))
                            {
                                item["fileState"] = "失败";
                                isSuccessed = false;
                                break;
                            }
                            // 刷新界面
                            Invoke((EventHandler)delegate
                            {
                                this.lblNum.Text = string.Format(fileNumTip, rowCount, dtTable.Rows.Count) + string.Format(" {0}/{1}", (i + 1) * 1024, mFileLength);
                            });
                        }
                        if (isSuccessed)
                        {
                            rowCount++;
                            item["fileState"] = "成功";                            
                        }                        
                    }
                    isUploading = false;
                }
            }
            catch (Exception ex)
            {
                UploadFiles();
            }
        }
        /// <summary>
        /// 关闭窗口
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (isUploading)
            {
                DialogResult result = XtraMessageBox.Show("正在上传文件中,退出将中断上传.", "系统提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                if (result == DialogResult.No)
                {
                    e.Cancel = true;
                }
            }
        }
    }
}