C#_把dataTable数据导出到CSV,XLS文件

//导出为svc文件
 2        public void ExportToSvc(System.Data.DataTable dt,string strName)
 3        {
 4             string strPath= Path.GetTempPath()+strName+".csv";
 5        
 6            if (File.Exists(strPath))
 7            {
 8                File.Delete(strPath);
 9            }
10            //先打印标头
11            StringBuilder strColu=new StringBuilder();
12            StringBuilder strValue=new StringBuilder();
13            int i=0;
14    
15            try
16            {
17                StreamWriter sw = new StreamWriter(new FileStream(strPath, FileMode.CreateNew), Encoding.GetEncoding("GB2312"));
18
19                for( i=0;i<=dt.Columns.Count-1;i++)
20                {
21                    strColu.Append(dt.Columns[i].ColumnName);
22                    strColu.Append(",");
23                }
24                strColu.Remove(strColu.Length-1,1);//移出掉最后一个,字符
25
26                sw.WriteLine(strColu);
27
28                foreach(DataRow dr in dt.Rows)
29                {
30                    strValue.Remove(0,strValue.Length);//移出
31        
32                    for(i=0;i<=dt.Columns.Count-1;i++)
33                    {
34                        strValue.Append(dr[i].ToString());
35                        strValue.Append(",");
36                    }
37                    strValue.Remove(strValue.Length-1,1);//移出掉最后一个,字符
38                    sw.WriteLine(strValue);
39                }
40                
41                sw.Close();
42            }
43            catch(Exception ex)
44            {
45                MessageBox.Show(ex.Message);
46
47            }
48
49            System.Diagnostics.Process.Start(strPath);
50                
51        }

//*******

作者:        wesimy

时间:        07/31/05

版本:        v.2.1

函数名:     DatatableToCSVFile

参数说明:   DataTable dt 导出CSV的数据

                string xbkPahth    CSV模板,主要存储一些表头的格式

                string SavePath    导出的路径

                ref string err        出错提示

功能:         把DataTable的数据导出到CSV文件中

 

********//

 

public void DatatableToCSVFile(System.Data.DataTable dt, string xbkPath, string SavePath, ref string err)
  {
   string row;
   try
   {
    string header;
    string tmp;

    StreamReader sr=new StreamReader(xbkPath);

    header=sr.ReadLine();
    
    sr.Close();

    FileStream fs=File.Create(SavePath);
    StreamWriter sw= new StreamWriter (fs);

    sw.WriteLine(header);

    

    foreach(DataRow dr in dt.Rows)
    {
     row="";
     for(int i=0;i<dt.Columns.Count;i++)
     {
      if(i!=dt.Columns.Count-1)
      {
       tmp= dr[i].ToString().Trim().Replace(","," ");
       row=row+tmp+",";
      }
      else
      {
       tmp= dr[i].ToString().Trim().Replace(",",".");
       row=row+tmp;
      }
     }
     sw.WriteLine(row);
    }
    sw.Flush();

    sw.Close();
   }
   catch(Exception ex)
   {
    err=ex.ToString();
    
   }
  }

 

//*******

作者:        wesimy

时间:        07/31/05

版本:        v.2.1

函数名:     DatatableToExelFile

参数说明:   DataTable dt 导出xls的数据

                string xbkPahth    xls模板,主要存储一些表头的格式

                string SavePath    导出的路径

                ref string err        出错提示

功能:         把DataTable的数据导出到CSV文件中

说明:         需要用到Excel名称空间等,此外,在不同版本的OFFICE可能会导致在BUILD的时候某些方法的错误,看看参数就可以确定用哪个方法了....

 

********//

 

public void DatatableToExcelFile( System.Data.DataTable dt,string xbkPath, string SavePath, ref string err)
  {
   try
   {
    Excel.Application excel;    
    Excel._Workbook xBk ;
    Excel._Worksheet xSt;
 
    excel = new Excel.ApplicationClass(); 
   
    xBk =  excel.Workbooks.Open (@xbkPath,
     Type.Missing, Type.Missing, Type.Missing, Type.Missing,
     Type.Missing, Type.Missing, Type.Missing, Type.Missing,
     Type.Missing, Type.Missing, Type.Missing, Type.Missing);
    xSt = (_Worksheet)xBk.Worksheets["OSI Full inspection result"];

        int beginRow = 5;
    for(int i=0; i<dt.Rows.Count;i++)
    {
     for(int j=1;j<dt.Columns.Count+1;j++)
     {
      xSt.Cells[i+beginRow,j]=dt.Rows[i][j-1];
     }
    }

    xSt.SaveAs(@SavePath,Type.Missing, Type.Missing, Type.Missing, Type.Missing,
     Type.Missing, Type.Missing, Type.Missing, Type.Missing);

    excel.Visible=false;
    if(xBk != null)
      xBk.Close(false, xbkPath, Type.Missing);
    if(xBk != null)
     System.Runtime.InteropServices.Marshal.ReleaseComObject (xBk);
    xBk=null;
    if(xSt != null)
     System.Runtime.InteropServices.Marshal.ReleaseComObject (xSt);
    xSt = null;
  
    if(excel != null)
    {
     excel.Quit();
     System.Runtime.InteropServices.Marshal.ReleaseComObject (excel);
     excel = null;  
    }
   }
   catch(Exception ex)
   {
    err = ex.Message;
   }
  
  }
 }