How to set visible to label1 = false if textbox1 ! =null every 15 second ?

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.NET4.5

How to set visible to label1 = false if textbox1 !=null every 15 second ?
I have windows form c# vs2015 form1
have label1 and textbox1
i need to set label1.visible=false ; after 15 second from textbox1 have value
to explain more
suppose i open form1 and write in textbox1 michel after writing michel by 15 second
set visible to label1=false
and if textbox1 not have value not execute visible to false to label1 after 15 second
so that how to do that please ?

What I have tried:

How to set visible to label1 = false if textbox1 !=null every 15 second ?

Posted 26-Feb-17 2:33am

ahmed_sa

Updated 26-Feb-17 2:47am

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PIEBALDconsult 26-Feb-17 9:26am

Why would you need to? I see no need for involving time.
Why not simply use Textbox_TextChange to toggle the state of the Label's Visible property?

[no name] 26-Feb-17 10:04am

If you haven't learned very basic C# programming after 3 years, maybe it's past time to find some other way to pass your time instead of being a help vampire. The world needs burger flippers too.

Maciej Los 26-Feb-17 10:48am

Why do you need such of functionality?

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Graeme_Grant · Answer 1 · 2017-02-26T02:47:00

Solution 1

In the Textbox_TextChange event, start a timer event. When the Timer_Tick event fires, change the label state.

Posted 26-Feb-17 2:47am

Graeme_Grant

Comments

ahmed_sa 26-Feb-17 9:17am

can you please tell me how to represent Timer_Tick event in code

Graeme_Grant 26-Feb-17 9:24am

We are not here to write the code for you. We will point you in the right direction. What I have written above will do the job.

Also, Google is your friend: vb timer example - Google[^]

ahmed_sa 26-Feb-17 10:52am

please help me to more explain what i need is to
to more explain
suppose i need to do action after 10 second

i write in textbox1 Michel

counter of timer will counting 0,1,2,3,4,5,6

in second no 6

i change text box to martin

timer will execute after 4 second

but what i need is to starting from second 0 in the moment i changed text box

Graeme_Grant 26-Feb-17 10:59am

Please look at the link. The answer is there.

Ralf Meier 26-Feb-17 11:32am

to give you an idea :
programming means to divide an action into small steps.
For your case (without any code) - what do you think what must be done for your example (step by step) ?

Graeme_Grant 26-Feb-17 11:38am

I've given them the steps. They just need to put in the work like the rest of us.