c#將Excel資料匯入到資料庫的實現代碼

c#將Excel資料匯入到資料庫的實現代碼

假如Excel中的資料如下：

資料庫建表如下：

其中Id為自增欄位：

代碼：

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資料匯入Datable        /// </summary>        /// <param name="fileUrl"></param>        /// <param name="table"></param>        /// <returns></returns>        public System.Data.DataTable GetExcelDatatable(string fileUrl, string table)        {            //office2007之前 僅支援.xls            //const string cmdText = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;IMEX=1';";            //支援.xls和.xlsx，即包括office2010等版本的   HDR=Yes代表第一行是標題，不是資料；            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;            //建立串連            OleDbConnection conn = new OleDbConnection(string.Format(cmdText, fileUrl));            try            {                //開啟串連                if (conn.State == ConnectionState.Broken || conn.State == ConnectionState.Closed)                {                    conn.Open();                }                System.Data.DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);                //擷取Excel的第一個Sheet名稱                string sheetName = schemaTable.Rows[0]["TABLE_NAME"].ToString().Trim();                //查詢sheet中的資料                string strSql = "select * from [" + sheetName + "]";                OleDbDataAdapter da = new OleDbDataAdapter(strSql, conn);                DataSet ds = new DataSet();                da.Fill(ds, table);                dt = ds.Tables[0];                return dt;            }            catch (Exception exc)            {                throw exc;            }            finally            {                conn.Close();                conn.Dispose();            }        }        /// <summary>        /// 從System.Data.DataTable匯入資料到資料庫        /// </summary>        /// <param name="dt"></param>        /// <returns></returns>        public int InsetData(System.Data.DataTable dt)        {            int i = 0;            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;        }    }}

運行結果：

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