点滴积累【C#】---将Excel数据导入到数据库

本文修改来源：http://www.cnblogs.com/chenyuming507950417/p/3169267.html

假如Excel中的数据如下：

　　数据库建表如下：

　　其中Id为自增字段：

代码：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
 using System.Data;
 using System.Data.OleDb;
 using System.Configuration;
 using System.Data.SqlClient;

 namespace InExcelOutExcel
 {
     public partial class ExcelToDB : System.Web.UI.Page
     {
         protected void Page_Load(object sender, EventArgs e)
         {
             FileSvr fileSvr = new FileSvr();
             System.Data.DataTable dt = fileSvr.GetExcelDatatable("C:\\Users\\NewSpring\\Desktop\\Demo\\InExcelOutExcel\\InExcelOutExcel\\excel\\ExcelToDB.xlsx", "mapTable");
             fileSvr.InsetData(dt);
         }
     }
     class FileSvr
     {
         /// <summary>
         /// Excel数据导入Datable
         /// </summary>
         /// <param name="fileUrl"></param>
         /// <param name="table"></param>
         /// <returns></returns>
         public System.Data.DataTable GetExcelDatatable(string fileUrl, string table)
         {
             //office2007之前 仅支持.xls
             //const string cmdText = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;IMEX=1';";
             //支持.xls和.xlsx，即包括office2010等版本的   HDR=Yes代表第一行是标题，不是数据；
             const string cmdText = "Provider=Microsoft.Ace.OleDb.12.0;Data Source={0};Extended Properties='Excel 12.0; HDR=Yes; IMEX=1'";

             System.Data.DataTable dt = null;
             //建立连接
             OleDbConnection conn = new OleDbConnection(string.Format(cmdText, fileUrl));
             try
             {
                 //打开连接
                 if (conn.State == ConnectionState.Broken || conn.State == ConnectionState.Closed)
                 {
                     conn.Open();
                 }

                 System.Data.DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

                 //获取Excel的第一个Sheet名称
                 string sheetName = schemaTable.Rows[]["TABLE_NAME"].ToString().Trim();

                 //查询sheet中的数据
                 string strSql = "select * from [" + sheetName + "]";
                 OleDbDataAdapter da = new OleDbDataAdapter(strSql, conn);
                 DataSet ds = new DataSet();
                 da.Fill(ds, table);
                 dt = ds.Tables[];

                 return dt;
             }
             catch (Exception exc)
             {
                 throw exc;
             }
             finally
             {
                 conn.Close();
                 conn.Dispose();
             }

         }

         /// <summary>
         /// 从System.Data.DataTable导入数据到数据库
         /// </summary>
         /// <param name="dt"></param>
         /// <returns></returns>
         public int InsetData(System.Data.DataTable dt)
         {
             int i = ;
             string lng = "";
             string lat = "";
             string offsetLNG = "";
             string offsetLAT = "";

             foreach (DataRow dr in dt.Rows)
             {
                 lng = dr["LNG"].ToString().Trim();
                 lat = dr["LAT"].ToString().Trim();
                 offsetLNG = dr["OFFSET_LNG"].ToString().Trim();
                 offsetLAT = dr["OFFSET_LAT"].ToString().Trim();

                 //sw = string.IsNullOrEmpty(sw) ? "null" : sw;
                 //kr = string.IsNullOrEmpty(kr) ? "null" : kr;

                 string strSql = string.Format("Insert into DBToExcel (LNG,LAT,OFFSET_LNG,OFFSET_LAT) Values ('{0}','{1}',{2},{3})", lng, lat, offsetLNG, offsetLAT);

                 string strConnection = ConfigurationManager.ConnectionStrings["ConnectionStr"].ToString();
                 SqlConnection sqlConnection = new SqlConnection(strConnection);
                 try
                 {
                     // SqlConnection sqlConnection = new SqlConnection(strConnection);
                     sqlConnection.Open();
                     SqlCommand sqlCmd = new SqlCommand();
                     sqlCmd.CommandText = strSql;
                     sqlCmd.Connection = sqlConnection;
                     SqlDataReader sqlDataReader = sqlCmd.ExecuteReader();
                     i++;
                     sqlDataReader.Close();
                 }
                 catch (Exception ex)
                 {
                     throw ex;
                 }
                 finally
                 {
                     sqlConnection.Close();

                 }
                 //if (opdb.ExcSQL(strSql))
                 //    i++;
             }
             return i;
         }
     }
 }

运行结果：