文件分割合并功能

文件分割合并功能

public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        //选择文件 事件        private void Btn_SelFile_Click(object sender, EventArgs e)        {            string filter="选择文件(*.*)|*.*";            OpenFileSelection ofs = new OpenFileSelection(filter,false);            if(ofs.IsFileSelected()==true)            {                this.textBox1.Text =ofs.GetFileName;            }        }        //选择目录 事件        private void btn_seldir_Click(object sender, EventArgs e)        {            DirectorySelection dirsel = new DirectorySelection(Environment.SpecialFolder.Desktop, "", true);            if (dirsel.IsDirectorySelected() == true)            {                this.textBox2.Text = dirsel.GetSelectedPath;            }        }        //开始分割        private void Btn_Split_Click(object sender, EventArgs e)        {            try            {                string fpath = this.textBox1.Text;                string splitDir = this.textBox2.Text;                SplitFile(fpath, splitDir, 10);                MessageBox.Show("分割完毕!", "提示");            }            catch (Exception ee)            {                MessageBox.Show(ee.Message, "提示");            }        }        public  bool SplitFile(string sourefilepath, string splitedStoreDir, int fileNums)        {            bool rbc = false;            FileStream fs = new FileStream(sourefilepath, FileMode.Open);            long fileLength = fs.Length;            long fNum = (long)fileNums;            long filesize = fileLength/fNum;                       for (int i = 0; i < fNum; i++)            {                int tmpfsize = (int)filesize;                string tmpfName = (i + 1).ToString();                string tmpfpath=splitedStoreDir + "\\" + tmpfName;                FileStream wfs = new FileStream(tmpfpath,FileMode.OpenOrCreate);                byte[] array = null;                               if (i == fNum - 1)                {                    long len_pos=fs.Length-fs.Position;                    array = new byte[len_pos];                    fs.Read(array, 0, (int)len_pos);                    wfs.Write(array, 0, (int)len_pos);                }                else                {                    array = new byte[tmpfsize];                    fs.Read(array, 0, tmpfsize);                    wfs.Write(array, 0, tmpfsize);                }                wfs.Flush();                wfs.Close();                wfs.Dispose();                wfs = null;            }            fs.Close();            fs.Dispose();            fs = null;            return rbc;        }        public bool UnionFile(string splitedStoreDir, string unionfilepath)        {            bool rbc = false;                        string[] filepathArray = CommonClass.GetFiles(splitedStoreDir, false);            List<int> list = new List<int>();            foreach (string t in filepathArray) list.Add(CommonClass.TInt(t.Replace("\\","")));            list.Sort();            FileStream wfs = new FileStream(unionfilepath, FileMode.Append);            for (int i = 0; i < list.Count; i++)            {                string fp = splitedStoreDir+"\\"+list[i].ToString();                FileStream fs = new FileStream(fp, FileMode.Open);                byte[] dataArray=new byte[fs.Length];                fs.Read(dataArray,0,(int)fs.Length);                                wfs.Write(dataArray,0, (int)fs.Length);                //                fs.Close();                fs.Dispose();                fs = null;            }            wfs.Flush();            wfs.Close();            wfs.Dispose();            wfs = null;            return rbc;        }        //开始合并        private void btn_union_Click(object sender, EventArgs e)        {            try            {                                string splitDir = this.textBox2.Text;                UnionFile(splitDir, splitDir + "\\union.iso");                MessageBox.Show("合并完毕!", "提示");            }            catch (Exception ee)            {                MessageBox.Show(ee.Message, "提示");            }        }            }