/// <summary>///根据Excel物理路径、表名(Sheet名)获取数据集

         /// </summary>/// <param name="FileFullPath">Excel物理路径param>/// <param name="SheetName">表名(Sheet名) 示例"Sheet1$"</param>/// <returns>DataTable</returns>public static System.Data.DataTable GetExcelToDataTableBySheet(string FileFullPath, string SheetName){//string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + FileFullPath + ";Extended Properties='Excel 8.0; HDR=NO; IMEX=1'"; //此连接只能操作Excel2007之前(.xls)文件string strConn = "Provider=Microsoft.Ace.OleDb.12.0;" + "data source=" + FileFullPath + ";Extended Properties='Excel 12.0; HDR=1; IMEX=1'"; //此连接可以操作xls与.xlsx文件OleDbConnection conn = new OleDbConnection(strConn);conn.Open();DataSet ds = new DataSet();OleDbDataAdapter odda = new OleDbDataAdapter(string.Format("SELECT * FROM [{0}]", SheetName), conn);                    //("select * from [Sheet1$]", conn);odda.Fill(ds, SheetName);conn.Close();return ds.Tables[0];}

         /// <summary>/// 根据YExcel物理路径获取Excel文件中所有表名/// </summary>/// <param name="excelFile">Excel物理路径</param>/// <returns>String数组</returns>public static String[] GetExcelSheetNames(string excelFile){OleDbConnection objConn = null;System.Data.DataTable dt = null;try{//string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + excelFile + ";Extended Properties='Excel 8.0; HDR=NO; IMEX=1'"; //此连接只能操作Excel2007之前(.xls)文件string strConn = "Provider=Microsoft.Ace.OleDb.12.0;" + "data source=" + excelFile + ";Extended Properties='Excel 12.0; HDR=NO; IMEX=1'"; //此连接可以操作xls与.xlsx文件objConn = new OleDbConnection(strConn);objConn.Open();dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);if (dt == null){return null;}String[] excelSheets = new String[dt.Rows.Count];int i = 0;foreach (DataRow row in dt.Rows){excelSheets[i] = row["TABLE_NAME"].ToString();i++;}return excelSheets;}catch{return null;}finally{if (objConn != null){objConn.Close();objConn.Dispose();}if (dt != null){dt.Dispose();}}}