how to update a text box continuously in c# without using loop or timer

Question

0.00/5 (No votes)

See more:

I developed a program that read output from a arduino uno analog pin through lan(shield). Now my problem is the text box that shows the output is only updating when i press the button. is There any way to update the text box to get the output real time other than loop and timer.

Because when the loop is used we cant use another function like on or off the digital pin.

==========
the code is
===========
textbox1.text= i;

i want this to be recurred. can any one provide me the source code

Posted 20-Nov-15 19:51pm

veena nair

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2015-11-20T22:03:00

There are ways...but a timer is the best solution.

The problem is that in order to update a textbox regularly, you need to have some indication that it should be changed - and unless you can get a "change of state" event generated by the hardware that your app can handle your only options are a timer or a loop. There are ways you can make a loop do what you want, such as moving it to a different thread (which is pretty trivial) but then you have to use Invoke to move the execution back to the "normal" UI thread to actually update the textbox, because you can't access any control except from the thread it was created on! So if your signal is changing rapidly, you will still spend more time executing "update textbox" on your UI thread than you will getting the new value on your background thread, and you will be back where you started with an unresponsive UI - but with more complicated code! :laugh:

Seriously, I'd use a Timer: set to 1/10th of a second (because most people can't react faster than that) and just set the next textbox value when it is different from last time.