点滴积累【C#】---将Excel数据导入到数据库_.NET_编程开发_程序员俱乐部

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：

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Web;
  5 using System.Web.UI;
  6 using System.Web.UI.WebControls;
  7 using System.Data;
  8 using System.Data.OleDb;
  9 using System.Configuration;
 10 using System.Data.SqlClient;
 11 
 12 namespace InExcelOutExcel
 13 {
 14     public partial class ExcelToDB : System.Web.UI.Page
 15     {
 16         protected void Page_Load(object sender, EventArgs e)
 17         {
 18             FileSvr fileSvr = new FileSvr();
 19             System.Data.DataTable dt = fileSvr.GetExcelDatatable("C:\\Users\\NewSpring\\Desktop\\Demo\\InExcelOutExcel\\InExcelOutExcel\\excel\\ExcelToDB.xlsx", "mapTable");
 20             fileSvr.InsetData(dt);
 21         }
 22     }
 23     class FileSvr
 24     {
 25         /// <summary>
 26         /// Excel数据导入Datable
 27         /// </summary>
 28         /// <param name="fileUrl"></param>
 29         /// <param name="table"></param>
 30         /// <returns></returns>
 31         public System.Data.DataTable GetExcelDatatable(string fileUrl, string table)
 32         {
 33             //office2007之前 仅支持.xls
 34             //const string cmdText = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;IMEX=1';";
 35             //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；
 36             const string cmdText = "Provider=Microsoft.Ace.OleDb.12.0;Data Source={0};Extended Properties='Excel 12.0; HDR=Yes; IMEX=1'";
 37 
 38             System.Data.DataTable dt = null;
 39             //建立连接
 40             OleDbConnection conn = new OleDbConnection(string.Format(cmdText, fileUrl));
 41             try
 42             {
 43                 //打开连接
 44                 if (conn.State == ConnectionState.Broken || conn.State == ConnectionState.Closed)
 45                 {
 46                     conn.Open();
 47                 }
 48 
 49 
 50                 System.Data.DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
 51 
 52                 //获取Excel的第一个Sheet名称
 53                 string sheetName = schemaTable.Rows[0]["TABLE_NAME"].ToString().Trim();
 54 
 55                 //查询sheet中的数据
 56                 string strSql = "select * from [" + sheetName + "]";
 57                 OleDbDataAdapter da = new OleDbDataAdapter(strSql, conn);
 58                 DataSet ds = new DataSet();
 59                 da.Fill(ds, table);
 60                 dt = ds.Tables[0];
 61 
 62                 return dt;
 63             }
 64             catch (Exception exc)
 65             {
 66                 throw exc;
 67             }
 68             finally
 69             {
 70                 conn.Close();
 71                 conn.Dispose();
 72             }
 73 
 74         }
 75 
 76         /// <summary>
 77         /// 从System.Data.DataTable导入数据到数据库
 78         /// </summary>
 79         /// <param name="dt"></param>
 80         /// <returns></returns>
 81         public int InsetData(System.Data.DataTable dt)
 82         {
 83             int i = 0;
 84             string lng = "";
 85             string lat = "";
 86             string offsetLNG = "";
 87             string offsetLAT = "";
 88 
 89             foreach (DataRow dr in dt.Rows)
 90             {
 91                 lng = dr["LNG"].ToString().Trim();
 92                 lat = dr["LAT"].ToString().Trim();
 93                 offsetLNG = dr["OFFSET_LNG"].ToString().Trim();
 94                 offsetLAT = dr["OFFSET_LAT"].ToString().Trim();
 95 
 96                 //sw = string.IsNullOrEmpty(sw) ? "null" : sw;
 97                 //kr = string.IsNullOrEmpty(kr) ? "null" : kr;
 98 
 99                 string strSql = string.Format("Insert into DBToExcel (LNG,LAT,OFFSET_LNG,OFFSET_LAT) Values ('{0}','{1}',{2},{3})", lng, lat, offsetLNG, offsetLAT);
100 
101                 string strConnection = ConfigurationManager.ConnectionStrings["ConnectionStr"].ToString();
102                 SqlConnection sqlConnection = new SqlConnection(strConnection);
103                 try
104                 {
105                     // SqlConnection sqlConnection = new SqlConnection(strConnection);
106                     sqlConnection.Open();
107                     SqlCommand sqlCmd = new SqlCommand();
108                     sqlCmd.CommandText = strSql;
109                     sqlCmd.Connection = sqlConnection;
110                     SqlDataReader sqlDataReader = sqlCmd.ExecuteReader();
111                     i++;
112                     sqlDataReader.Close();
113                 }
114                 catch (Exception ex)
115                 {
116                     throw ex;
117                 }
118                 finally
119                 {
120                     sqlConnection.Close();
121 
122                 }
123                 //if (opdb.ExcSQL(strSql))
124                 //    i++;
125             }
126             return i;
127         }
128     }
129 }

运行结果：