将oledb读取的excel数据快速插入的sqlserver中，很多人通过循环来拼接sql，这样做不但容易出错而且效率低下，最好的办法是使用bcp，也就是System.Data.SqlClient.SqlBulkCopy 类来实现。不但速度快，而且代码简单，下面测试代码导入一个6万多条数据的sheet，包括读取（全部读取比较慢）在我的开发环境中只需要10秒左右，而真正的导入过程只需要4.5秒。

using System; using System.Data; using System.Windows.Forms; using System.Data.OleDb; namespace WindowsApplication2 {     public partial class Form1 : Form     {         public Form1()         {             InitializeComponent();         }

        private void button1_Click(object sender, EventArgs e)

        {             //测试，将excel中的sheet1导入到sqlserver中             string connString = "server=localhost;uid=sa;pwd=sqlgis;database=master";             System.Windows.Forms.OpenFileDialog fd = new OpenFileDialog();             if (fd.ShowDialog() == DialogResult.OK)             {                 TransferData(fd.FileName, "sheet1", connString);             }         }

        public void TransferData(string excelFile, string sheetName, string connectionString)

        {             DataSet ds = new DataSet();             try             {                 //获取全部数据                 string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + excelFile + ";" + "Extended Properties=Excel 8.0;";                 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);

                //如果目标表不存在则创建

                string strSql = string.Format("if object_id('{0}') is null create table {0}(", sheetName);                 foreach (System.Data.DataColumn c in ds.Tables[0].Columns)                 {                     strSql += string.Format("[{0}] varchar(255),", c.ColumnName);                 }                 strSql = strSql.Trim(',') + ")";

                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导入数据                 using (System.Data.SqlClient.SqlBulkCopy bcp = new System.Data.SqlClient.SqlBulkCopy(connectionString))                 {                     bcp.SqlRowsCopied += new System.Data.SqlClient.SqlRowsCopiedEventHandler(bcp_SqlRowsCopied);                     bcp.BatchSize = 100;//每次传输的行数                     bcp.NotifyAfter = 100;//进度提示的行数                     bcp.DestinationTableName = sheetName;//目标表                     bcp.WriteToServer(ds.Tables[0]);                 }             }             catch (Exception ex)             {                 System.Windows.Forms.MessageBox.Show(ex.Message);             }

        }

        //进度显示

        void bcp_SqlRowsCopied(object sender, System.Data.SqlClient.SqlRowsCopiedEventArgs e)         {             this.Text = e.RowsCopied.ToString();             this.Update();         }

    } }

上面的TransferData基本可以直接使用，如果要考虑周全的话，可以用oledb来获取excel的表结构，并且加入ColumnMappings来设置对照字段，这样效果就完全可以做到和sqlserver的dts相同的效果了。

获取excel结构的方法可以参考我先前的文章

http://blog.csdn.net/jinjazz/archive/2008/05/13/2441635.aspx

本文转自黄聪博客园博客，原文链接：http://www.cnblogs.com/huangcong/archive/2010/07/15/1778389.html，如需转载请自行联系原作者