using (StreamReader str = new StreamReader(filename))
{
string allphone = str.ReadToEnd();
}这时导入txt文件的,当文件达到1M时上传需要的速度大概在30秒左右//导入excel到DataSet中
string filepath = Server.MapPath("~/upload/") + name;
DataSet ds = ExcelDataSource(filepath, ExcelSheetName(filepath)[0].ToString());//该方法实现从Excel中导出数据到DataSet中,其中filepath为Excel文件的绝对路径, sheetname为excel文件中的表名
public DataSet ExcelDataSource(string filepath, string sheetname)
{
string strConn;
strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
OleDbDataAdapter oada = new OleDbDataAdapter("select * from [" + sheetname + "]", strConn);
DataSet ds = new DataSet();
oada.Fill(ds);
conn.Close();
return ds;
} //获得Excel中的所有sheetname。
public ArrayList ExcelSheetName(string filepath)
{
ArrayList al = new ArrayList();
string strConn;
strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties=Excel 8.0;";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
DataTable sheetNames = conn.GetOleDbSchemaTable
(System.Data.OleDb.OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
conn.Close();
foreach (DataRow dr in sheetNames.Rows)
{
al.Add(dr[2]);
}
return al;
}这是导入excel的方法========================上面的方法运行在虚拟主机上,时间大概都在30秒左右,文件在2M左右。不知有什么好的方法可以提高速度。谢谢。
SqlBulkCopy 速度很快.操作简单!
个人测试所用。调用请修改。 /// <summary>
/// 使用事务和SqlBulkCopy批量导入数据 示例
/// By Conan304 2009年8月29日21:51:02
/// </summary>
/// <param name="phone"></param>
/// <param name="smsInfo"></param>
private static void SqlBulkCopyData(string[] phone, string smsInfo)
{if (phone == null) return;//生成DataTable
DataTable dataTable = new DataTable();DataColumn column = new DataColumn();//qy_id
column.DataType = System.Type.GetType("System.Int32");
column.ColumnName = "QY_ID";
dataTable.Columns.Add(column);//Info_ID
column = new DataColumn();
column.DataType = System.Type.GetType("System.String");
column.MaxLength = 32;
column.ColumnName = "Info_ID";
dataTable.Columns.Add(column);//SP_Port
column = new DataColumn();
column.DataType = System.Type.GetType("System.String");
column.MaxLength = 24;
column.ColumnName = "SP_Port";
dataTable.Columns.Add(column);//Phone
column = new DataColumn();
column.DataType = System.Type.GetType("System.String");
column.MaxLength = 11;
column.ColumnName = "Phone";
dataTable.Columns.Add(column);//Content
column = new DataColumn();
column.DataType = System.Type.GetType("System.String");
column.MaxLength = 300;
column.ColumnName = "Content";
dataTable.Columns.Add(column);//SendTime
column = new DataColumn();
column.DataType = System.Type.GetType("System.DateTime");
column.ColumnName = "SendTime";
column.DefaultValue = DateTime.Now;
dataTable.Columns.Add(column);//SendLevel
column = new DataColumn();
column.DataType = System.Type.GetType("System.Int32");
column.ColumnName = "SendLevel";
column.DefaultValue = 4;
dataTable.Columns.Add(column);//IsLong
column = new DataColumn();
column.DataType = System.Type.GetType("System.Int32");
column.ColumnName = "IsLong";
dataTable.Columns.Add(column);//AdminID
column = new DataColumn();
column.DataType = System.Type.GetType("System.Int32");
column.ColumnName = "AdminID";
column.DefaultValue = 0;
dataTable.Columns.Add(column);string[] result = new string[phone.Length];for (int i = 0; i < phone.Length; i++)
{
//生成GUID
string Guid = System.Guid.NewGuid().ToString("N").ToUpper();
string phoneNew = string.Empty;
int phoneType = GetMobileType(phone[i], out phoneNew);
if (phoneType == 0)
{
result[i] = phoneNew + "-0-0";
}
else
{
DataRow dataRow = dataTable.NewRow();
dataRow["qy_id"] = 16;
dataRow["Info_ID"] = Guid;
dataRow["SP_Port"] = "10657027014211";
dataRow["Phone"] = phoneNew;
dataRow["Content"] = smsInfo;
dataRow["IsLong"] = 0;
dataTable.Rows.Add(dataRow);
result[i] = phoneNew + "-1-" + Guid;
}
}//BCP copy
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "server=.;uid=dmkj_hpc;pwd=#$wlh*&1110h%c;database=DMKJ_SMS";
conn.Open();SqlTransaction sqlbulkTransaction = conn.BeginTransaction();//请在插入数据的同时检查约束,如果发生错误调用sqlbulkTransaction事务
SqlBulkCopy copy = new SqlBulkCopy(conn, SqlBulkCopyOptions.CheckConstraints, sqlbulkTransaction);
copy.DestinationTableName = "T_SMS_SendInfo";
foreach (DataColumn dc in dataTable.Columns)
{
copy.ColumnMappings.Add(dc.ColumnName, dc.ColumnName);}
try
{
copy.WriteToServer(dataTable);
sqlbulkTransaction.Commit();
}
catch (Exception ex)
{
sqlbulkTransaction.Rollback();
Console.WriteLine(ex.ToString());
}
finally
{
copy.Close();
conn.Close();
}
//for (int x = 0; x < dataTable.Rows.Count; x++)
//{
// for (int i = 0; i < dataTable.Columns.Count; i++)
// {
// Console.WriteLine("Column Name:{0},and value is:{1}",dataTable.Columns[i].ColumnName.ToString(),dataTable.Rows[x][i].ToString());
// }
// Console.WriteLine();
//}//foreach (string str in result)
//{
// Console.WriteLine(str.ToString());
//}
}
使用SqlBulkCopyOptions.UseInternalTransaction:using (SqlBulkCopy bulkCopy = new SqlBulkCopy(
connectionString, SqlBulkCopyOptions.KeepIdentity |
SqlBulkCopyOptions.UseInternalTransaction))
{
bulkCopy.BatchSize = 10;
bulkCopy.DestinationTableName =
"dbo.BulkCopyDemoMatchingColumns"; // Write from the source to the destination.
// This should fail with a duplicate key error
// after some of the batches have been copied.
try
{
bulkCopy.WriteToServer(XXX);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
//some code;
}
}使用SqlTransaction :using (SqlConnection destinationConnection =
new SqlConnection(connectionString))
{
destinationConnection.Open(); using (SqlTransaction transaction =
destinationConnection.BeginTransaction())
{
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(
destinationConnection, SqlBulkCopyOptions.KeepIdentity,
transaction))
{
bulkCopy.BatchSize = 10;
bulkCopy.DestinationTableName =
"dbo.BulkCopyDemoMatchingColumns"; // Write from the source to the destination.
// This should fail with a duplicate key error.
try
{
bulkCopy.WriteToServer(XXX);
transaction.Commit();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
transaction.Rollback();
}
finally
{
//code;
}
}
}
} SqlBulkCopyOptions
成员名称 说明
Default 对所有选项使用默认值。
KeepIdentity 保留源标识值。如果未指定,则由目标分配标识值。
CheckConstraints 请在插入数据的同时检查约束。默认情况下,不检查约束。
TableLock 在批量复制操作期间获取批量更新锁。如果未指定,则使用行锁。
KeepNulls 保留目标表中的空值,而不管默认值的设置如何。如果未指定,则空值将由默认值替换(如果适用)。
FireTriggers 指定后,会导致服务器为插入到数据库中的行激发插入触发器。
UseInternalTransaction 如果已指定,则每一批批量复制操作将在事务中发生。如果指示了此选项,并且为构造函数提供了 SqlTransaction 对象,则发生 ArgumentException。
一个线程负责向数据库插入各字段,共享一些变量
或SQL Server中的DTS,
还可使用ADODB的BatchUpdate