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I never used AsyncCallback. Need your help.
When In Windows Form app I importing rows application form freezes. To prevent it, i think I can use AsyncCallback.
foreach (DataRow dr in srcdt.Rows)
{
desdt.ImportRow(dr);
}
and while importing rows, to show in lebel.Text imported row count.
Some help please.
Have a look at BackgroundWorker
This will allow you to kick off your long running process in another thread, receive progress reports and a completed event.