How to update value in textBox in ASP.NET in different thread?

Question

I am working with a serial port device in asp.net.It works in different thread than UI thread.In its event I want to get access to my textbox and change its value.

void posInfo(string smth)
{
txtUI.text = smth;
}

this is giving me exception. how can i achieve this?

need to send the `txtUI` to your thread. – Aristos Jul 10 '12 at 10:51 — Aristos, Jul 10 '12 at 10:51

score 1 · Answer 1 · edited May 23 '17 at 12:25

1

HTTP is disconnected protocol and the time your thread would send data you will not have connections to clients You will have to use some pooling solution using javascript timer with Ajax for updating the textbox asp.net. or you can use Web scoket to update the GUI

edited May 23 '17 at 12:25

Community

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answered Jul 10 '12 at 10:46

Adil

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we dont have InvokeRequire in asp.net. and also this.Invoke is not available in asp.net – Morteza Naeimabadi Jul 10 '12 at 10:49

score 0 · Answer 2 · answered Jul 12 '12 at 20:53

0

After the page is already rendered, you won't be able to change the textbox value. You'll have to do it with ajax or maybe something like signalr.

answered Jul 12 '12 at 20:53

Kevin Up

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How to update value in textBox in ASP.NET in different thread?

2 Answers2