asp.net excle表批量导入到sql server 2000的同时实现更新功能 asp.netsql serverexcel 数据 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 用的下面代码实现的,是在网上找的方法,主要思路是,两个表比较,删除相同数据,然后用SqlBulkCopy导入数据。现在的问题是,如果excle表和sql server表的数据很多,执行起来会很慢,经常超时。求大神帮解决一下,重在效率,越快越好。string connString = "server=localhost;uid=sa;pwd=123456;database=excel";DataSet ds = new DataSet(); try { SqlConnection sqlconn = new SqlConnection(connectionString); sqlconn.Open(); //获取全部数据 string strConn = "Provider = Microsoft.Jet.OLEDB.4.0;" + "Data Source =C://Inetpub//wwwroot//soft//pic_1//31.xls;" + "Extended Properties='Excel 8.0;HDR=Yes;IMEX=1';"; OleDbConnection conn = new OleDbConnection(strConn); conn.Open(); string strExcel = ""; OleDbDataAdapter myCommand = null; strExcel = "select * from [sheet1$]"; myCommand = new OleDbDataAdapter(strExcel, strConn); myCommand.Fill(ds, "[sheet1$]"); conn.Close(); DataTable dt = new DataTable(); dt = ds.Tables[0]; var lq = from t in ds.Tables[0].AsEnumerable() select new { ordNo = t.Field<double>("ratecode") }; List<string> ordList = new List<string>(); foreach (var q in lq) { ordList.Add(q.ordNo.ToString()); } string k = string.Join("','", ordList.ToArray()); new SqlCommand() { CommandText = "Delete From product1 Where ratecode In('" + k + "')", Connection = sqlconn, CommandType = CommandType.Text, CommandTimeout = 180 }.ExecuteNonQuery(); //用bcp导入数据 using (SqlBulkCopy bcp = new SqlBulkCopy(connectionString)) { bcp.BatchSize = 10000;//每次传输的行数 bcp.NotifyAfter = 20000;//进度提示的行数 bcp.DestinationTableName = "dbo.product1";//目标表 bcp.ColumnMappings.Add("prefix", "prefix"); bcp.ColumnMappings.Add("provider", "provider"); bcp.ColumnMappings.Add("destination", "destination"); bcp.ColumnMappings.Add("ratecode", "ratecode"); bcp.ColumnMappings.Add("ratelevel", "ratelevel"); bcp.ColumnMappings.Add("rateper", "rateper"); bcp.ColumnMappings.Add("billingincr", "billingincr"); bcp.ColumnMappings.Add("issuedate", "issuedate"); bcp.ColumnMappings.Add("effentivedate", "effentivedate"); bcp.ColumnMappings.Add("changetype", "changetype"); bcp.WriteToServer(dt); bcp.Close(); } sqlconn.Close(); } catch (Exception ex) { Response.Write(ex.Message); }} 如何使用C#只显示表中某个字段例如:status=1的数据 global.asax定时器不启动 网站发布的问题 [ASP.NET]AjaxPro.2 在有母版页情况下的问题 帮忙解释两句代码 邦定事件问题(asp:checkbox)急~~~! 三层结构中实体类该如何使用? 问一个页面F5后产生的问题 请大家帮我看看这个错误这么处理啊 请教个Session的问题 updatepanel局部刷新依旧刷新整个页面 关于ASP.NET导出Excel的问题
现在的问题是,如果excle表和sql server表的数据很多,执行起来会很慢,经常超时。
求大神帮解决一下,重在效率,越快越好。
string connString = "server=localhost;uid=sa;pwd=123456;database=excel";
DataSet ds = new DataSet(); try
{
SqlConnection sqlconn = new SqlConnection(connectionString);
sqlconn.Open(); //获取全部数据
string strConn = "Provider = Microsoft.Jet.OLEDB.4.0;" + "Data Source =C://Inetpub//wwwroot//soft//pic_1//31.xls;" + "Extended Properties='Excel 8.0;HDR=Yes;IMEX=1';";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
string strExcel = "";
OleDbDataAdapter myCommand = null;
strExcel = "select * from [sheet1$]";
myCommand = new OleDbDataAdapter(strExcel, strConn);
myCommand.Fill(ds, "[sheet1$]");
conn.Close();
DataTable dt = new DataTable();
dt = ds.Tables[0];
var lq = from t in ds.Tables[0].AsEnumerable()
select new
{
ordNo = t.Field<double>("ratecode")
};
List<string> ordList = new List<string>();
foreach (var q in lq)
{
ordList.Add(q.ordNo.ToString());
}
string k = string.Join("','", ordList.ToArray());
new SqlCommand()
{
CommandText = "Delete From product1 Where ratecode In('" + k + "')",
Connection = sqlconn,
CommandType = CommandType.Text,
CommandTimeout = 180
}.ExecuteNonQuery(); //用bcp导入数据
using (SqlBulkCopy bcp = new SqlBulkCopy(connectionString))
{
bcp.BatchSize = 10000;//每次传输的行数
bcp.NotifyAfter = 20000;//进度提示的行数
bcp.DestinationTableName = "dbo.product1";//目标表 bcp.ColumnMappings.Add("prefix", "prefix");
bcp.ColumnMappings.Add("provider", "provider");
bcp.ColumnMappings.Add("destination", "destination");
bcp.ColumnMappings.Add("ratecode", "ratecode");
bcp.ColumnMappings.Add("ratelevel", "ratelevel");
bcp.ColumnMappings.Add("rateper", "rateper");
bcp.ColumnMappings.Add("billingincr", "billingincr");
bcp.ColumnMappings.Add("issuedate", "issuedate");
bcp.ColumnMappings.Add("effentivedate", "effentivedate");
bcp.ColumnMappings.Add("changetype", "changetype"); bcp.WriteToServer(dt);
bcp.Close();
} sqlconn.Close(); }
catch (Exception ex)
{
Response.Write(ex.Message);
}}