将EXCEL中的数据导入到DataSet中

private DataSet doImport(string strFileName)
  {
   if (strFileName=="") return null;
             
   strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +
    "Data Source=" +  strFileName + ";" +
    "Extended Properties=Excel 8.0;";
   OleDbDataAdapter ExcelDA = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strConn);
   DataSet ExcelDs = new DataSet();
   try
   {
    ExcelDA.Fill(ExcelDs, "ExcelInfo");
               
   }
   catch(Exception err)
   {
    System.Console.WriteLine( err.ToString() );
   }
   return ExcelDs;
            }