我在桌面程序中有一个业务逻辑处理。Web服务中的多线程以加快处理速度
然而,数据处理是可怕的慢,当我与大数据,(我使用MS SQL数据库)处理。因此,我会做一些工作。我打开Web服务项目,并将其打包我的业务逻辑处理成一个DLL名称consoleAttn(),则处理如下代码分成几个线程,与DOTNET的Task.Parallel理工科:
`
DataTable dtEmp = new DataTable("Employee");
if (cn.State == ConnectionState.Closed)
{
cn.Open();
}
using (System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sEmpQuery, cn))
{
Console.Write(string.Format("Command Text:{0}", sEmpQuery));
cmd.Parameters.AddWithValue("Period", sPeriod);
dtEmp.Load(cmd.ExecuteReader());
}
if (cn.State == ConnectionState.Open)
{
cn.Close();
}
Int32 iThread;
iThread = iNoThread;
Int32 iCountTable;
iCountTable = dtEmp.Rows.Count;
Console.WriteLine(string.Format("Total Rows:{0}", iCountTable));
Int32 IProcNum;
IProcNum = iCountTable/iThread;
Console.WriteLine(string.Format("Transaction no:{0}", IProcNum));
if (iCountTable < iThread)
{
Boolean bl;
AutoHRPay.frmClosePeriod aPay= new AutoHRPay.frmClosePeriod();
MiscResource AMisc = new MiscResource();
MiscResource misc = new MiscResource();
misc.SetDBConn(strCN);
}
else
{
Boolean[] bl = new Boolean[iThread];
object locker = new object();
Parallel.For(1, iThread + 1, i =>
{
System.Text.StringBuilder strSQL = new System.Text.StringBuilder();
strSQL.Append("(");
DataTable dtEmpThread = dtEmp.Clone();
dtEmpThread.Clear();
for (Int32 j = ((i - 1) * IProcNum + 1); j <= ((i != iThread) ? (IProcNum * i) : iCountTable); j++)
{
dtEmpThread.ImportRow(dtEmp.Rows[j-1]);
}
int row_counter = 0;
lock (locker)
{
row_counter++;
streamwriter.WriteLine("Processing row: {0}", row_counter);
}
ConsoleAttn aPay = new ConsoleAttn();
aPay.runConsole();
});
}
streamwriter.Close();
return "Completed.";
1)你有什么想法,当我需要停止进程或调用Web服务的客户端崩溃时,我应该如何执行异步过程?