Error: Error while recieving data. Message: The calling thread cannot access this object because a

k365

i am using c#.net framework 4.5
using the sample when i init ticker, it shows ticks in debug window. But when I try to access its value to display to a form or something, it gives error...
Error: Error while recieving data. Message: The calling thread cannot access this object because a different thread owns it.

i tried to call a delegate ontick event but still the problem remains same.

main thing is i am calling ticker from from gives this error, or when i call a delegate and points to form, gives error. BUT when i call to print in debug window, it prints well. what is the matter? let me know

k365

private void onTick(Tick TickData)
{
Debug.WriteLine("T: Tick " + Utils.JsonSerialize(TickData));

Tick t = TickData;
decimal a = t.LastPrice;
decimal b = t.AveragePrice;
txt.Text = a + " " + b;

}

from above code, when i use debug.writeline, it works good.
but when i try to get result in textbox or anywhere, it gives error. why ?

k365

any genius to reply ?

kiranMaya

@k365
your calling "txt" from another thread,assume,you were using windows forms ," txt " belongs to UI thread ,you need to use like

public static void InvokeOnUi(Control control, Action action)
{
if (control.InvokeRequired)
{
control.BeginInvoke(action);
}
else
{
action.Invoke();
}
}
//useage
private void onTick(Tick TickData)
{
Debug.WriteLine("T: Tick " + Utils.JsonSerialize(TickData));

Tick t = TickData;
decimal a = t.LastPrice;
decimal b = t.AveragePrice;

InvokeOnUi(this, () =>
{
txt.Text = a + " " + b;

});
}