namespace ExcelToTxt 
{ 
    partial class Form1 
    { 
        /// summary>
        /// 必需的設(shè)計(jì)器變量。 
        /// /summary>
        private System.ComponentModel.IContainer components = null; 

        /// summary>
        /// 清理所有正在使用的資源。 
        /// /summary>
        /// param name="disposing">如果應(yīng)釋放托管資源，為 true；否則為 false。/param>
        protected override void Dispose(bool disposing) 
        { 
            if (disposing (components != null)) 
            { 
                components.Dispose(); 
            } 
            base.Dispose(disposing); 
        } 

        #region Windows 窗體設(shè)計(jì)器生成的代碼 

        /// summary>
        /// 設(shè)計(jì)器支持所需的方法 - 不要 
        /// 使用代碼編輯器修改此方法的內(nèi)容。 
        /// /summary>
        private void InitializeComponent() 
        { 
            this.dgvShow = new System.Windows.Forms.DataGridView(); 
            this.btnSelect = new System.Windows.Forms.Button(); 
            this.btnChange = new System.Windows.Forms.Button(); 
            ((System.ComponentModel.ISupportInitialize)(this.dgvShow)).BeginInit(); 
            this.SuspendLayout(); 
            //  
            // dgvShow 
            //  
            this.dgvShow.AllowUserToAddRows = false; 
            this.dgvShow.AllowUserToDeleteRows = false; 
            this.dgvShow.AllowUserToResizeRows = false; 
            this.dgvShow.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize; 
            this.dgvShow.Dock = System.Windows.Forms.DockStyle.Top; 
            this.dgvShow.Location = new System.Drawing.Point(0, 0); 
            this.dgvShow.Name = "dgvShow"; 
            this.dgvShow.RowTemplate.Height = 23; 
            this.dgvShow.Size = new System.Drawing.Size(885, 600); 
            this.dgvShow.TabIndex = 0; 
            //  
            // btnSelect 
            //  
            this.btnSelect.Location = new System.Drawing.Point(202, 611); 
            this.btnSelect.Name = "btnSelect"; 
            this.btnSelect.Size = new System.Drawing.Size(148, 23); 
            this.btnSelect.TabIndex = 1; 
            this.btnSelect.Text = "選擇excel文件"; 
            this.btnSelect.UseVisualStyleBackColor = true; 
            this.btnSelect.Click += new System.EventHandler(this.btnSelect_Click); 
            //  
            // btnChange 
            //  
            this.btnChange.Location = new System.Drawing.Point(403, 611); 
            this.btnChange.Name = "btnChange"; 
            this.btnChange.Size = new System.Drawing.Size(152, 23); 
            this.btnChange.TabIndex = 2; 
            this.btnChange.Text = "轉(zhuǎn)換為txt文檔"; 
            this.btnChange.UseVisualStyleBackColor = true; 
            this.btnChange.Click += new System.EventHandler(this.btnChange_Click); 
            //  
            // Form1 
            //  
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); 
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
            this.ClientSize = new System.Drawing.Size(885, 646); 
            this.Controls.Add(this.btnChange); 
            this.Controls.Add(this.btnSelect); 
            this.Controls.Add(this.dgvShow); 
            this.Name = "Form1"; 
            this.Text = "文件轉(zhuǎn)換"; 
            ((System.ComponentModel.ISupportInitialize)(this.dgvShow)).EndInit(); 
            this.ResumeLayout(false); 

        } 

        #endregion 

        private System.Windows.Forms.DataGridView dgvShow; 
        private System.Windows.Forms.Button btnSelect; 
        private System.Windows.Forms.Button btnChange; 
    } 
}

  using System;  
  using System.Collections.Generic;  
  using System.ComponentModel;  
  using System.Data;  
  using System.Data.OleDb;  
  using System.Drawing;  
  using System.Text;  
  using System.Windows.Forms;  
  using System.IO;  

   
  namespace ExcelToTxt  
  {  
      public partial class Form1 : Form  
      {  
          private DataTable dt; //存儲(chǔ)EXCLE中的數(shù)據(jù)  

          public Form1()  
          {  
              InitializeComponent();  
              this.btnChange.Enabled = false;//初始化設(shè)置控件為不可用  
          }  

   
          /// lt;summarygt;  
          /// 該方法打開(kāi)一個(gè)Excel文件  
          /// lt;/summarygt;  
          /// lt;param name="sender"gt;lt;/paramgt;  
          /// lt;param name="e"gt;lt;/paramgt;  
          private void btnSelect_Click(object sender, EventArgs e)  
          {  
              string excelFilePath = ""; //存儲(chǔ)打開(kāi)的文件的路徑  

              OpenFileDialog selectFile = new OpenFileDialog();  

              //選擇打開(kāi)的文件設(shè)置  
              selectFile.Filter = "Excel(*.xls)|*.xls";  
              selectFile.FilterIndex = 1;  
              selectFile.DefaultExt = "xls";  
              selectFile.AddExtension = true;  
              selectFile.RestoreDirectory = true;  
              selectFile.Multiselect = false;  

              //選擇文件  
              if (selectFile.ShowDialog() == DialogResult.OK)  
              {  
                  excelFilePath = selectFile.FileName;//獲取選擇的文件路徑  
              }  
              else 
              {  
                  return;  
              }  

              //得到控件的數(shù)據(jù)源  
              dt = GetExcelData(excelFilePath);  

              //在顯示控件中顯示數(shù)據(jù)  
              ShowDataGridView();  

              //設(shè)置轉(zhuǎn)換格式的控件可用  
              this.btnChange.Enabled = true;  
          }  

   
          /// lt;summarygt;  
          ///該方法將選擇的EXCEL文件轉(zhuǎn)換成TXT文檔   
          /// lt;/summarygt;  
          /// lt;param name="sender"gt;lt;/paramgt;  
          /// lt;param name="e"gt;lt;/paramgt;  
          private void btnChange_Click(object sender, EventArgs e)  
          {  
              string txtFilePath = "";//存儲(chǔ)選擇的TXT文檔的文件名  
              SaveFileDialog saveTxtFile = new SaveFileDialog();  

              //選擇保存的文件設(shè)置  
              saveTxtFile.Filter = "Text(.txt)|*.txt";  
              saveTxtFile.FilterIndex = 1;  
              saveTxtFile.DefaultExt = "txt";  
              saveTxtFile.AddExtension = true;  
              saveTxtFile.RestoreDirectory = true;  
              saveTxtFile.OverwritePrompt = true;  

              //選擇創(chuàng)建文件的文件夾  
              if (saveTxtFile.ShowDialog() == DialogResult.OK)  
              {  
                  txtFilePath = saveTxtFile.FileName; //獲取選擇的文件路徑  
              }  
              else 
              {  
                  return;  
              }  

              //將DataTable中的文件寫(xiě)入到txt文檔中  
              Cursor.Current = Cursors.WaitCursor; //設(shè)置鼠標(biāo)狀態(tài)  
              int dtcols = dt.Columns.Count;  
              StringBuilder sbtxtdata = new StringBuilder(); ;  //臨時(shí)存儲(chǔ)從dt中讀出的每一條數(shù)據(jù)  

   
              //先創(chuàng)建一個(gè)新的TXT文檔  
              FileStream fsTxtFile = new FileStream(txtFilePath, FileMode.CreateNew, FileAccess.Write);  
              StreamWriter swTxtFile = new StreamWriter(fsTxtFile, Encoding.GetEncoding("gb2312") );  

              if (dtcols gt; 3)  
              {  
                  string[] tempstr = new string[11];  

                  //設(shè)置固定的值  
                  tempstr[0] = "\"" + "檢測(cè)設(shè)備資產(chǎn)標(biāo)簽" + "\"" + ",";  
                  tempstr[1] = "\"" + "設(shè)備名稱(chēng)" + "\"" + ",";  
                  tempstr[3] = "\"" + "規(guī)格型號(hào)" + "\"" + ",";  
                  tempstr[5] = "\"" + "設(shè)備編號(hào)" + "\"" + ",";  
                  tempstr[7] = "\"" + "使用部門(mén)" + "\"" + ",";  
                  tempstr[9] = "\"" + "固定資產(chǎn)編號(hào)" + "\"" + ",";   

                  //標(biāo)簽2的格式寫(xiě)入Txt文檔  
                  for(int rows = 0; rows lt; dt.Rows.Count; rows++)  
                  {  
                      for (int cols = 0; cols lt; dt.Columns.Count; cols++)  
                      {  
                          int tempindex = 2*(cols+1);  
                          tempstr[tempindex] = "\"" + dt.Rows[rows][cols].ToString() + "\"";  
                      }  

                      tempstr[2] = tempstr[2] + ",";  
                      tempstr[4] = tempstr[4] + ",";  
                      tempstr[6] = tempstr[6] + ",";  
                      tempstr[8] = tempstr[8] + ",";  
                      tempstr[10] = tempstr[10] + "\r\n";  

                      //將本行數(shù)據(jù)寫(xiě)入緩沖區(qū)  
                      foreach (string str in tempstr)  
                      {  
                          sbtxtdata.Append(str);  
                      }  
                      swTxtFile.Write(sbtxtdata);  

                      //清空本行中的數(shù)據(jù)  
                      sbtxtdata.Remove(0, sbtxtdata.Length);  

                      //將數(shù)組中新添加的數(shù)據(jù)清空  
                      for (int i = 0; i lt; dt.Columns.Count; i++)  
                      {  
                          int tempindex = 2*(i+1);  
                          tempstr[tempindex] = "";  
                      }  
                  }  
              }  
              else 
              {  
                  string[] tempstr = new string[5];  
                  //標(biāo)簽0或1的格式寫(xiě)入Txt文檔  
                  for (int rows = 0; rows lt; dt.Rows.Count; rows++)  
                  {  
                      for (int cols = 0; cols lt; dt.Columns.Count; cols++)  
                      {  
                          string temp = "";//臨時(shí)存儲(chǔ)當(dāng)前時(shí)間  

                          if (cols == 0)  
                          {  
                              tempstr[0] = "\"" + dt.Rows[rows][cols] + "\"" + ",";  
                          }  
                          else if (cols == 1)  
                          {  
                              temp = dt.Rows[rows][cols].ToString();  
                              tempstr[1] = "\"" + temp.Substring(0, 4) + "\"" + ","; //截取年  
                              tempstr[2] = "\"" + temp.Substring(4, 2) + "\"" + ","; //截取月  
                              tempstr[3] = "\"" + temp.Substring(6, 2) + "\"" + ","; //截取日  
                          }  
                          else if (cols == 2)  
                          {  
                              tempstr[4] = "\"" + dt.Rows[rows][cols] + "\"" + "\r\n";  
                          }  
                      }  

                      //將本行數(shù)據(jù)寫(xiě)入緩沖區(qū)  
                      foreach (string str in tempstr)  
                      {  
                          sbtxtdata.Append(str);  
                      }  
                      swTxtFile.Write(sbtxtdata);  

                      //清空本行中的數(shù)據(jù)  
                      sbtxtdata.Remove(0, sbtxtdata.Length);  

                      //將數(shù)組中新添加的數(shù)據(jù)清空  
                      for (int i = 0; i lt; dt.Columns.Count; i++)  
                      {  
                          tempstr[i] = "";  
                      }  
                  }  
              }  

              //將數(shù)據(jù)寫(xiě)入文檔  
              swTxtFile.Write("end");  
              swTxtFile.Flush();  
              swTxtFile.Close();  
              fsTxtFile.Close();  

              //重新設(shè)置鼠標(biāo)格式  
              Cursor.Current = Cursors.Default;  
              MessageBox.Show("文件轉(zhuǎn)換成功!", "提示",  
                      MessageBoxButtons.OK,  MessageBoxIcon.Information);  
          }  

   
          /// lt;summarygt;  
          /// 獲取Excel文件中的數(shù)據(jù)  
          /// lt;/summarygt;  
          /// lt;param name="path"gt;Excel文件的路徑lt;/paramgt;  
          /// lt;returnsgt;DataTable:將Excel文件的數(shù)據(jù)加載到DataTable中l(wèi)t;/returnsgt;  
          private DataTable GetExcelData(string path)  
          {  
              //連接字符串確定  
              string excelstr = "Provider = Microsoft.Jet.OLEDB.4.0;" + "Data Source= " + path + " ;"   
                          + " Extended Properties = Excel 8.0;";  

              OleDbConnection excelConn = new OleDbConnection(excelstr);  

              //打開(kāi)數(shù)據(jù)源連接  
              try 
              {  
                  if (excelConn.State == ConnectionState.Closed)  
                  {  
                      excelConn.Open();  
                  }  
              }  
              catch (Exception ex)  
              {  
                  MessageBox.Show("打開(kāi)數(shù)據(jù)源連接失?。?, "錯(cuò)誤",   
                          MessageBoxButtons.OK, MessageBoxIcon.Error);  
                  Application.Exit();  
              }  
              finally 
              {  
                  if(excelConn.State == ConnectionState.Open)  
                  excelConn.Close();  
              }  

              //設(shè)置查詢(xún)命令  
              OleDbDataAdapter myCommand = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", excelConn);  
              DataSet ds = new DataSet();  

              //執(zhí)行該查詢(xún)EXCEL表的命令  
              try 
              {  
                  myCommand.Fill(ds, "excelTable");  
              }  
              catch (Exception ex)  
              {  
                  MessageBox.Show("該Excel文件的工作表的名字不是[Sheet1$]!", "錯(cuò)誤",   
                                        MessageBoxButtons.OK, MessageBoxIcon.Error);  
                  Application.Exit();  
              }  
              finally 
              {  
                  if (excelConn.State == ConnectionState.Closed)  
                  {  
                      excelConn.Close();  
                  }  
              }  

              //判斷DataTable中是否有數(shù)據(jù)  
              if (ds.Tables["excelTable"].Rows.Count gt; 0)  
              {  
                  return ds.Tables["excelTable"];  
              }  
              else 
              {  
                  MessageBox.Show("沒(méi)有讀到Excel表中的數(shù)據(jù)!", "錯(cuò)誤",   
                                          MessageBoxButtons.OK, MessageBoxIcon.Error);  
                  return null;  
              }  
          }  

   
          /// lt;summarygt;  
          /// 將選擇的excel表中的數(shù)據(jù)現(xiàn)在DataGridView中  
          /// lt;/summarygt;  
          private void ShowDataGridView()  
          {  
              //設(shè)置顯示控件的樣式  
              this.dgvShow.DefaultCellStyle.BackColor = Color.Beige;  
              this.dgvShow.DefaultCellStyle.Font = new Font("Tahoma", 12);  

              DataGridViewCellStyle highlightCellStyle = new DataGridViewCellStyle();  
              highlightCellStyle.BackColor = Color.Red;  

              DataGridViewCellStyle currencyCellStyle = new DataGridViewCellStyle();  
              currencyCellStyle.Format = "C";  
              currencyCellStyle.ForeColor = Color.Green;  

              //設(shè)置顯示控件的數(shù)據(jù)源  
              dgvShow.DataSource = dt;  
          }  

      }  
  }