自己写的进度条

namespace Demo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        string AllFile = string.Empty;
        ServiceReference1.UploadFileSoapClient soap = new ServiceReference1.UploadFileSoapClient();


        private void button1_Click(object sender, EventArgs e)
        {
            AllFile = "";
            string FtpFile = soap.GetAllFileName();//获取服务器返回的JSON,获取所有的文件名称,及文件修改时间
            int AllFileLength = 0;
            var json = Newtonsoft.Json.Linq.JArray.Parse(FtpFile);//处理JSON


            var listFileName = json.Select(j => j["FileName"]).ToList();//获取服务器文件名称列表
            var FileLength = json.Select(j => j["FileLength"]).ToList();//获取服务器文件字节
            var FileTime = json.Select(j => j["FileTime"]).ToList();//获取服务器文件修改时间

            for (int i = 0; i < FileLength.Count; i++)
            {
                if (!System.IO.File.Exists(Path.GetFullPath(".\") + "UponLoad\" + listFileName[i]))
                {
                    AllFile += listFileName[i] + ","; //记录不存在的文件名称
                    AllFileLength += Convert.ToInt32(FileLength[i]);//记录不存在的文件大小
                }
                else
                {
                    FileInfo fileInfo = new FileInfo(Path.GetFullPath(".\") + "UponLoad\" + listFileName[i]);
                    if (fileInfo.LastWriteTime.ToString("yyyyMMddHHmmss") != FileTime[i].ToString())
                    {
                        AllFile += listFileName[i] + ",";//记录不存在的文件名称
                        AllFileLength += Convert.ToInt32(FileLength[i]);//记录不存在的文件大小
                    }
                }
            }
            //若不存在记录数，则不进行更新
            if (AllFile.Length > 0)
            {
                AllFile = AllFile.Substring(0, AllFile.Length - 1);
                MessageBox.Show("需要更新的文件一共有" + AllFile.Split(',').Count() + "个,总共大小为：" + (AllFileLength / 1024) + "KB");
                progressBar1.Maximum = AllFile.Split(',').Count();
                Thread t = new Thread(new ThreadStart(GetBaseStringToFile));
                t.Start();
            }
            else
            {
                MessageBox.Show("不需要更新");
            }


            
        }

        private delegate void SetPoint(int pot);

        #region 更新进度条
        /// <summary>
        /// 更新进度条
        /// </summary>
        /// <param name="ipos"></param>
        private void SetTextMessage(int ipos)
        {
            if (this.InvokeRequired)
            {
                SetPoint setpos = new SetPoint(SetTextMessage);
                this.Invoke(setpos, new object[] { ipos });
            }
            else
            {
                this.label1.Text = ipos.ToString() + "/"+AllFile.Split(',').Count();
                this.progressBar1.Value = Convert.ToInt32(ipos);
            }
        }
        #endregion
        
        int j = 0;//记录更新成功的文件数目
        
        public void GetBaseStringToFile() 
        {
            string[] fileToName=AllFile.Split(',');
            for (int i = 0; i < fileToName.Count(); i++)
            {
                if (Untity.StringToFile(soap.FileToStream(fileToName[i]), Path.GetFullPath(".\") + "UponLoad\" + fileToName[i])) //下载更新文件，返回true则增加进度条
                {
                    Thread.Sleep(500);
                    j++;
                    SetTextMessage(j);
                }
            }
        }
    }


}

还没搞出怎么提示子线程加载完成。搞出来了然后就可以提示更新成功或失败。。。

  #region 把经过base64编码的字符串保存为文件
        /// <summary>  
        /// 把经过base64编码的字符串保存为文件  
        /// </summary>  
        /// <param name="base64String">经base64加码后的字符串 </param>  
        /// <param name="fileName">保存文件的路径和文件名 </param>  
        /// <returns>保存文件是否成功 </returns>  
        public static bool StringToFile(string base64String, string fileName)
        {
            try
            {
                FileStream fs = new FileStream(fileName, FileMode.Create);
                BinaryWriter bw = new BinaryWriter(fs);
                if (!string.IsNullOrEmpty(base64String) && File.Exists(fileName))
                {
                    bw.Write(Convert.FromBase64String(base64String));
                }
                bw.Close();
                fs.Close();
            }
            catch
            {
                return false;
            }
            return true;
        }
        #endregion