Communication between two forms

Ronald Grossett

Giuseppe Russo... I was trying to use part of your code in my application but the result was futile. I was wondering if you could help me resolve the problem...

I am creating Windows Forms Application believe to be called a singleton program design.
This is using a main form with differents options for the user to select.

These options in turn all have their corresponding forms with unique function attached.
When the main form executes and the user select an option, the option form is then hidden
away from the user (as oppose to close) until its selected again. Note.. ITS NOT CLOSED.

My question is:- how to pass data from say.... a form thats got a text box with data to
another form thats got a listview box... basically updating the listview box.

All of the examples I have seen creates new instances of forms which is not ideal in my case.

I tried creating an event handler but have hit a buffer/brickwall

Thanks in advance

4 Replies

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Ronald Grossett7y ago
Amit... thanks., I'll go take a look!
Amit Gupta7y ago
I have answered this type of question https://www.c-sharpcorner.com/forums/pass-value-from-one-form-to-another-form-and-refresh
Ronald Grossett7y ago
Hi Rajanikant... thanks for your reply. Unfortunately data from the initial richtext box is checked and sometime modify or even discarded. Nevertheless, you just gave me an idea in creating my own event handler. This is where I am at present codewise

if (status == 0){
value = value.ToLower();
using (StreamWriter sw = File.AppendText(path)){
sw.WriteLine(value + " " + datestamp);
MessageBox.Show(value.ToString() + " is now registered....... ");
how do I insert my own event handler here to send [value and datestamp] to another form containing the Listview?
ReSetInput();
}

Are you able to assist?
Rajanikant Hawaldar7y ago
Hi Ronald,

textbox had textchanged event, it faires when something entered.

create listboxitem property at another form and as you said singleton pattern is used so
you can change this listboxitem property at textchanged event(using singleton instance of another form) in which form textbox is control is added.

Thanks