高效的將excel導入sqlserver(web)

 

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

using System.Data.OleDb;

public partial class 導入數據_Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    /// <summary>
    /// 導入按鈕
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void Button1_Click(object sender, EventArgs e)
    {
        Label2.Text = DateTime.Now.ToString();
        //測試，將excel中的sheet1導入到sqlserver中  
        string connString = "server=localhost;uid=sa;pwd=123;database=master";
        string path = Server.MapPath("abc.xls");
        TransferData(path, "Sheet1", connString);
        Label3.Text = DateTime.Now.ToString();
        TimeSpan sp = DateTime.Now.Subtract(Convert.ToDateTime(Label2.Text));
        Label4.Text = sp.Seconds.ToString();
    }
    /// <summary>
    /// 導入數據
    /// </summary>
    public void TransferData(string excelFile, string sheetName, string connectionString)
    {
        DataSet ds = new DataSet();
        try
        {
            //獲取全部數據（將EXCEL表中數據填充到DataSet）
            string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + excelFile + ";" + "Extended Properties=Excel 8.0;";// 連接EXCEL文件
            OleDbConnection conn = new OleDbConnection(strConn);
            conn.Open();
            string strExcel = "";
            OleDbDataAdapter myCommand = null;
            strExcel = string.Format("select * from [{0}$]", sheetName);
            myCommand = new OleDbDataAdapter(strExcel, strConn);
            myCommand.Fill(ds, sheetName);

            //如果目標表不存在則創建（自動創建表）
            string strSql = string.Format("if object_id('{0}') is null create table {0}(", sheetName);
            foreach (System.Data.DataColumn c in ds.Tables[0].Columns)
            {
                // 根據excel文件得到列名
                strSql += string.Format("[{0}] varchar(255),", c.ColumnName);
            }
            strSql = strSql.Trim(',') + ")";// 去掉最後的","

            // 起到自動釋放的作用
            using (System.Data.SqlClient.SqlConnection sqlconn = new System.Data.SqlClient.SqlConnection(connectionString))
            {
                sqlconn.Open();
                System.Data.SqlClient.SqlCommand command = sqlconn.CreateCommand();
                command.CommandText = strSql;
                command.ExecuteNonQuery();
                sqlconn.Close();
            }
            //用bcp導入數據  
            using (System.Data.SqlClient.SqlBulkCopy bcp = new System.Data.SqlClient.SqlBulkCopy(connectionString))
            {
                bcp.SqlRowsCopied += new System.Data.SqlClient.SqlRowsCopiedEventHandler(bcp_SqlRowsCopied);
                bcp.BatchSize = 100;//每次傳輸的行數  
                bcp.NotifyAfter = 100;//進度提示的行數  
                bcp.DestinationTableName = sheetName;//目標表  
                bcp.WriteToServer(ds.Tables[0]);
            }
        }
        catch (Exception ex)
        {
            //錯誤提示消息。
        }

    }
    /// <summary>
    /// 進度顯示
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
  
    void bcp_SqlRowsCopied(object sender, System.Data.SqlClient.SqlRowsCopiedEventArgs e)
    {
        Label1.Text = e.RowsCopied.ToString();
    }
}