读excle
1.OleDbConnection读取Excel
///<summary>
///上传文件到临时目录中 
///</ummary>
private void Upload()
{
     HttpPostedFile file = this.fileSelect.PostedFile;
     string fileName = file.FileName;
     string tempPath = System.IO.Path.GetTempPath();   //获取系统临时文件路径
      fileName = System.IO.Path.GetFileName(fileName); //获取文件名(不带路径)
     this.currFileExtension = System.IO.Path.GetExtension(fileName);   //获取文件的扩展名
     this.currFilePath = tempPath + fileName; //获取上传后的文件路径 记录到前面声明的全局变量
     file.SaveAs(this.currFilePath);  //上传
}
///<summary>
///读取xls\xlsx格式的Excel文件的方法 
///</ummary>
///<param name="path">待读取Excel的全路径</param>
///<returns></returns>
private DataTable ReadExcelToTable(string path)
{
//连接字符串
string connstring = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties='Excel 8.0;HDR=NO;IMEX=1';";   // Office 07及以上版本 不能出现多余的空格 而且分号注意
//string connstring = Provider=Microsoft.JET.OLEDB.4.0;Data Source=" + path + ";Extended Properties='Excel 8.0;HDR=NO;IMEX=1';";  //Office 07以下版本 因为本人用Office2010 所以没有用到这个连接字符串  可根据自己的情况选择 或者程序判断要用哪一个连接字符串
using(OleDbConnection conn = new OleDbConnection(connstring))
{
   conn.Open();
   DataTable sheetsName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables,new object[]{null,null,null,"Table"});  //得到所有sheet的名字
    string firstSheetName = sheetsName.Rows[0][2].ToString();   //得到第一个sheet的名字
    string sql = string.Format("SELECT * FROM [{0}],firstSheetName);  //查询字符串
     OleDbDataAdapter ada =new OleDbDataAdapter(sql,connstring);
     DataSet set = new DataSet();
     ada.Fill(set);
     return set.Tables[0];
     
}
}
///<summary>
///读取csv格式的Excel文件的方法 
///</ummary>
///<param name="path">待读取Excel的全路径</param>
///<returns></returns>
private DataTable ReadExcelWithStream(string path)
{
   DataTable dt = new DataTable();
   bool isDtHasColumn = false;   //标记DataTable 是否已经生成了列
   StreamReader reader = new StreamReader(path,System.Text.Encoding.Default);  //数据流
   while(!reader.EndOfStream)
    {
       string meaage = reader.ReadLine();
       string[] splitResult = message.Split(new char[]{','},StringSplitOption.None);  //读取一行 以逗号分隔 存入数组
       DataRow row = dt.NewRow();
       for(int i = 0;i<splitResult.Length;i++)
          {
              if(!isDtHasColumn) //如果还没有生成列
                  {
                        dt.Columns.Add("column" + i,typeof(string));
                    }
                    row[i] = splitResult[i];
             }
            dt.Rows.Add(row);  //添加行
            isDtHasColumn = true;  //读取第一行后 就标记已经存在列   再读取以后的行时,就不再生成列
     }
    return dt;
}
2.ExcelDataReader可以读取 Microsoft Excel 文件
ExcelDataReader可以读取 Microsoft Excel 文件 ('97-2007),支持Windows .Net Framework 2 +、 Windows Mobile with Compact Framework 
、 Linux, OS X, BSD with Mono 2。项目地址:http://exceldatareader.codeplex.com/(下载插件)
使用方法非常简单:
FileStream stream = File.Open(filePath, FileMode.Open, FileAccess.Read);
//1. Reading from a binary Excel file ('97-2003 format; *.xls)
IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader(stream);
//...
//2. Reading from a OpenXml Excel file (2007 format; *.xlsx)
IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);
//...
//3. DataSet - The result of each spreadsheet will be created in the result.Tables
DataSet result = excelReader.AsDataSet();
//...
//4. DataSet - Create column names from first row
excelReader.IsFirstRowAsColumnNames = true;
DataSet result = excelReader.AsDataSet();
//5. Data Reader methods
while (excelReader.Read())
{
//excelReader.GetInt32(0);
}
//6. Free resources (IExcelDataReader is IDisposable)
excelReader.Close();
 
                    
                     
                    
                 
                    
                
 
                
            
         
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浙公网安备 33010602011771号