my class start new process (Tshark) and start capturing, from the main form i am checking the class properties in order to update my GUI, sometimes the received packets rate i so high that my GUI stuck so i want the option to check whose properties every 1-2 second. this is my progress change function who checking my class all the time and in this point i am update my GUi, how can i checking those properties every 2 seconds ?
Tshark tshark = new Tshark();
private void bgWSniffer_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
tshark = e.UserState as Tshark;
lblNumberOfReceivedPackets.Text = tshark._receivesPackets.ToString("#,##0");
lblTrafficRate.Text = (tshark._bitsPerSecond * 0.000001).ToString("0.##") + " Mbit/sec" + " (" + tshark._bitsPerSecond.ToString("#,##0") + " Bits/sec" + ")";
lblPacketsRate.Text = tshark._packetsPerSecond.ToString("#,##0") + " Packets/sec";
lblStatus.Text = tshark._status;
lblFileSize.Text = formatBytes(tshark._myFile.Length);
tshark._myFile.Refresh();
}
Check if 2 seconds has passed since the last check. Here, I'm using a class member to tract that time.
private DateTime _LastCheck = DateTime.MinValue;
private private void bgWSniffer_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
if (_LastCheck.AddSeconds(2) <= DateTime.Now)
{
_LastCheck = DateTime.Now;
// do the UI update.
}
}
Instead of updating the UI within the BackgroundWorker
you can just create a Timer to do the job
private void bgWSniffer_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
tshark = e.UserState as Tshark;
}
In the ctor create the timer:
_timer = new Timer()
_timer.Intrerval = 2000;
_timer.Tick += UpdateUI;
_timer.Start();
You can add some checking in case the values have changed so you don't update the UI needlessly:
private void UpdateUI()
{
var local = _tshark;
if(local != null)
{
lblNumberOfReceivedPackets.Text = local._receivesPackets.ToString("#,##0");
lblTrafficRate.Text = (local._bitsPerSecond * 0.000001).ToString("0.##") + " Mbit/sec" + " (" + local._bitsPerSecond.ToString("#,##0") + " Bits/sec" + ")";
lblPacketsRate.Text = local._packetsPerSecond.ToString("#,##0") + " Packets/sec";
lblStatus.Text = local._status;
lblFileSize.Text = formatBytes(local._myFile.Length);
local._myFile.Refresh();
}
}
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