如何高效的将excel导入sqlserver?

发布网友发布时间：2022-05-04 13:03

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热心网友时间：2022-05-04 14:33

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。