communication between window forms

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Hi,
I m building a project with two window forms - MainForm and NextForm.
In MainForm I have a method which depending on the response from NextForm will do either one thing or the other;

C#

public void performAction()
{
if(response == true)
{
//do something
}
//the rest of the code
}

I need to get the boolean response from NextForm.

NextForm contains:

C#

public delegate void Confirmation(bool answer);
public event Confirmation sendConfirmation;

private void button1_Click(object sender, EventArgs e)
{
    this.sendConfirmation(true);
    this.Dispose();
}


private void button2_Click(object sender, EventArgs e)
{
    this.sendConfirmation(false);
    this.Dispose();
}

how can I get a response in MainForm without creating an extra method for that?

I will have like 20 methods which will ask for response from NextForm, so that might give a lot of extra code which I would like to avoid...

Posted 18-Nov-10 22:04pm

xtremas

Updated 18-Nov-10 22:08pm

Tom Deketelaere

v2

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2 solutions

Solution 4

you can have public variables in mainform and assign values to these in nextform, if you state mainform as the owner of the nextform.
alternatively you can use the DialogResult property of forms.

Posted 21-Nov-10 7:13am

MCY

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ARopo · Accepted Answer · 2010-11-18T22:24:00

Why not us an enum? e.g.

C#

public enum ActionType { button1, button2 /* ...*/ };
public delegate void Confirmation(bool answer, ActionType actionType);
public event Confirmation sendConfirmation;
private void button1_Click(object sender, EventArgs e)
{
    this.sendConfirmation(true, ActionType.button1);
    this.Dispose();
}

private void button2_Click(object sender, EventArgs e)
{
    this.sendConfirmation(false, ActionType.button2);
    this.Dispose();
}

in main form

C#

public void performAction(NextForm.ActionType actionType)
{
   switch(actionType) {
     case NextForm.ActionType.<pre>

Button1;
break;
case NextForm.ActionType.Button2;
break;
}
}

Also in NextForm you could set the tag on each button to the enum e.g.

button1.Tag = ActionType.button1;
button2.Tag = ActionType.button2;

then have one handler

C#

private void any_button_Click(object sender, EventArgs e)
{
    this.sendConfirmation(true, (ActionType)(sender as Button).Tag);
}