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using System.Data.OleDb;
using System.Data.SqlClient;
//²Ù×÷Àà
 public class ExcelToSQL
{
    //string SqlConnectionString = "Server=(local);Initial Catalog=Test;Integrated Security=True";
    public SqlConnection sqlcon;        //´´½¨SQLÁ¬½Ó
    public SqlCommand sqlcom;          //´´½¨SQLÃüÁî¶ÔÏó
    public ExcelToSQL()
    {
        DataOperation dataOperation = new DataOperation(); //Óõ½Æ½Ì¨µÄº¯Êý£¬¾ÍÊdzõʼ»¯SqlConnection¶ÔÏó
        DBUnit dbUnit = dataOperation.GetDbUnit();
        sqlcon = (SqlConnection)dbUnit.cnt;
        if (sqlcon.State.ToString() == "Open")
            sqlcon.Close();
    }
    public int ImportSql(string excelPath, string tableName)  //µ¼ÈëµÄExcelµÄ·¾¶£¬Êý¾Ý¿âÀïµÄ±íÃû
    {
        if (!TableExist(tableName)) //±íÃûÊÇ·ñ´æÔÚ
            return (int)ImportState.tableNameError;
        DataTable dt = ExcelToDataTable(excelPath);
       if (dt == null)
        {
   &nbs


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using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;
using System.Data.Common;
using System.Data;
namespace DownData.dal
{
    public static class DBHelper
    {
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