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实验要求: 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 System.Threading; namespace WindowsFormsApplication1 { public partial class 文件分割器1 : Form { //时间:2012-9-6 //作者:Olive //功能:实现大文件的分割、合并 #region Members int count1,count,fgkDaXiao; FileInfo fFenGe,fHeBing; FileStream fStream,hStream; string fenGeLuJing,heBingLuJing; int value = 0; #endregion #region Methods public 文件分割器1() { InitializeComponent(); skinEngine1.SkinFile = "WarmColor1.ssk"; } /// <summary> /// 选择要分割的文件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnfgwenjian_Click(object sender, EventArgs e) { try { if (openFileDialog1.ShowDialog() == DialogResult.OK) { fFenGe = new FileInfo(openFileDialog1.FileName); txtfenge.Text = fFenGe.FullName; fenGeLuJing = fFenGe.FullName.Substring(0, fFenGe.FullName.Length - openFileDialog1.SafeFileName.Length); txtwjdaxiao.Text = ((int)fFenGe.Length/1024).ToString(); fStream = new FileStream(fFenGe.FullName, FileMode.Open, FileAccess.Read); } } catch { MessageBox.Show("文件分割异常,请检查确认无误后再次分割!"); } } /// <summary> /// 选择要保存的路径,如果不选默认为与原文件同路径 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnfglujing_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(txtfgkdaxiao.Text)) { MessageBox.Show("请输入文件分割块大小!"); } if (folderBrowserDialog1.ShowDialog() == DialogResult.OK) { txtfglujing.Text= folderBrowserDialog1.SelectedPath; fenGeLuJing = folderBrowserDialog1.SelectedPath+"\\"; } } /// <summary> /// 分割文件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnfenge_Click(object sender, EventArgs e) { try { int wenJianLength = Convert.ToInt32(txtwjdaxiao.Text); if (wenJianLength % fgkDaXiao == 0) { count = wenJianLength / fgkDaXiao; } else { count = wenJianLength / fgkDaXiao + 1; } for (int i = 0; i < count; i++) { Thread thread = new Thread(new ParameterizedThreadStart(FenGe)); thread.Start(i); } MessageBox.Show("文件分割完毕"); } catch { MessageBox.Show("分割异常,请确认操作!"); } } /// <summary> /// 分割线程调用函数 /// </summary> /// <param name="i"></param> public void FenGe(object i) { try { using (FileStream fgstream = new FileStream(fenGeLuJing + fFenGe.Name.Substring(0, fFenGe.Name.Length - fFenGe.Extension.Length) + i + fFenGe.Extension, FileMode.OpenOrCreate, FileAccess.Write)) { byte[] buffer = new byte[fgkDaXiao * 1024]; int data = 0; if ((data = fStream.Read(buffer, 0, buffer.Length)) > 0) { BinaryWriter bWriter = new BinaryWriter(fgstream, Encoding.Default); bWriter.Write(buffer, 0, data); value=(int)i/count*100; progressBar1.Value = value; } } } catch { MessageBox.Show("文件打开异常!"); } } /// <summary> /// 输入值变化 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void txtfgkdaxiao_TextChanged(object sender, EventArgs e) { if (txtfgkdaxiao.Text.Length > 0) { fgkDaXiao = Convert.ToInt32(txtfgkdaxiao.Text); } } /// <summary> /// 选择要合并的文件,首个分割文件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnhbwenjian_Click(object sender, EventArgs e) { if (openFileDialog1.ShowDialog() == DialogResult.OK) { fHeBing = new FileInfo(openFileDialog1.FileName); txthebing.Text = fHeBing.FullName; heBingLuJing = fHeBing.FullName.Substring(0, fHeBing.FullName.Length - openFileDialog1.SafeFileName.Length) + "\\"; } } /// <summary> /// 选择合并后的文件的保存路径 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnhebinglujing_Click(object sender, EventArgs e) { if (folderBrowserDialog1.ShowDialog() == DialogResult.OK) { heBingLuJing = folderBrowserDialog1.SelectedPath + "\\"; } } /// <summary> /// 合并文件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button1_Click(object sender, EventArgs e) { try { if (count1 > 0) { using (hStream = new FileStream(heBingLuJing + fHeBing.Name.Substring(0, fHeBing.Name.Length - fHeBing.Extension.Length - 1) + fHeBing.Extension, FileMode.OpenOrCreate, FileAccess.Write)) { for (int i = 0; i < count1; i++) { Thread thread = new Thread(new ParameterizedThreadStart(HeBing)); thread.Start(i); } MessageBox.Show("合并完成"); } } else { MessageBox.Show("请输入合并文件数目"); } } catch { MessageBox.Show("合并异常,请重新合并"); } } /// <summary> /// 求要合并的文件数 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void txthbkuaishu_TextChanged(object sender, EventArgs e) { count1 = Convert.ToInt32(txthbkuaishu.Text); } /// <summary> /// 合并线程调用的合并函数,执行文件合并 /// </summary> /// <param name="i"></param> public void HeBing(object i) { using (FileStream readStream = new FileStream(fHeBing.FullName.Substring(0, fHeBing.FullName.Length - fHeBing.Extension.Length- 1) + i + fHeBing.Extension, FileMode.Open, FileAccess.Read)) { byte[] buffer = new byte[readStream.Length]; int data = 0; if ((data = readStream.Read(buffer, 0, buffer.Length)) > 0) { BinaryWriter binary = new BinaryWriter(hStream, Encoding.Default); binary.Write(buffer, 0, data); } } } #endregion } }
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