wpf windows unresponsive because of threading

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Posted 22-Feb-15 23:02pm

Member 8806421

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OriginalGriff 23-Feb-15 5:07am

This is not a good question - we cannot work out from that little what you are trying to do.
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Member 8806421 23-Feb-15 5:17am

this is my code when i call this on button then wpf unresponsive

Dispatcher.Invoke(DispatcherPriority.Normal, (Action)delegate()
{

while (_continue == true)
{
if (!port.IsOpen)
{
port = new SerialPort(CmbComPort.SelectedItem.ToString());
port.Open();
}

message = port.ReadExisting();
if (message.Length > 0 && message.Length >= 15)
{
if (message.Contains("^"))
{
AA = message.Substring(1, 2);

ThreadWrite();
}
else
{

_continue = false;
}

}

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OriginalGriff · Answer 1 · 2015-02-22T23:31:00

Read the documentation: https://msdn.microsoft.com/en-us/library/system.windows.threading.dispatcher.invoke(v=vs.110).aspx[^]
"Dispatcher.Invoke Method

Executes the specified delegate synchronously on the thread the Dispatcher is associated with."
So if you are executing that code on your UI thread, then the UI will stop responding until it exits the loop.

Try using the SerialPort.DataRecieved[^] event and processing the data character by character instead.

wpf windows unresponsive because of threading

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