public static DataTable GetExcelToDataTableBySheet(string FileFullPath,string SheetName)

{

　//此连接只能操作Excel2007之前(.xls)文件

　　string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + FileFullPath + ";Extended Properties='Excel 8.0; HDR=NO; IMEX=1'"; 

　　//此连接可以操作.xls与.xlsx文件

   string strConn = "Provider=Microsoft.Ace.OleDb.12.0;" +"data source=" + FileFullPath + ";Extended Properties='Excel 12.0; HDR=NO; IMEX=1'";

   OleDbConnection conn = new OleDbConnection(strConn);

   conn.Open();

   DataSet ds = new DataSet();

   OleDbDataAdapter odda = new OleDbDataAdapter(string.Format("SELECT * FROM [{0}]", SheetName), conn);

　　//OleDbDataAdapter odda = new OleDbDataAdapter(string.Format("select * from [Sheet1$]", conn),conn);             　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

   odda.Fill(ds, SheetName);

   conn.Close();

   ]; 

}

//根据Excel物理路径获取Excel文件中所有表名 

public static String[] GetExcelSheetNames(string excelFile)

{

            OleDbConnection objConn = null;

            System.Data.DataTable dt = null; 

            try

            {

//此连接只能操作Excel2007之前(.xls)文件

                tring strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + excelFile + ";Extended Properties='Excel 8.0; HDR=NO; IMEX=1'"; 

 //此连接可以操作.xls与.xlsx文件

                string strConn = "Provider=Microsoft.Ace.OleDb.12.0;" +"data source=" + excelFile + ";Extended Properties='Excel 12.0; HDR=NO; IMEX=1'";

                objConn = new OleDbConnection(strConn);

                objConn.Open();

                dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

                if (dt == null)

                {

                    return null;

                }

                String[] excelSheets = new String[dt.Rows.Count];

                ;

                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();

                }

            }

}