How to change windows main form's control values from child form in VB.NET

Question

0.00/5 (No votes)

See more:

Dear Sir/s

I have main windows form from that form i am calling another form.

VB

dim frm as new frmchild(loginid)
frm.show()

now from this child form i want to update textbox value of main form.
Please help me i have tried a lot.

while debugging is shows values are changed but actual on the main form it does not get reflected new values.

Thanks

What I have tried:

on main form i had use one timer which update textbox value of main form.and this timer i enabled it on child form.

frmmain.timer1.enabled=true
as soon this timer get enabled timer1 update textbox value.

Posted 16-Aug-16 21:43pm

Sunil Bansode

Updated 16-Aug-16 22:23pm

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 · 2016-08-16T22:23:00

Create an Event in your child form which the Main form handles: https://msdn.microsoft.com/en-us/library/ms172877.aspx?f=255&MSPPError=-2147217396[^] - when your child wants to update the main form, it raises the event.
Add a property to the child to return the data that you want you update with.
In the main form event handler, access the property via the instance of the child form - either by saving the instance when you create it in the code you show above, or via the sender parameter to the handler method. The main form then updates itself with the new data.