Simple forms question

[JSM]

Hi,

I have a form (FormA) which was loaded using Application.Run when my app
loads. This form has a button which loads Form B using "FormB myForm=new
FormB()". My question is, how do I access and modify the value of a control
on FormA from FormB?

I thought this would be easy but I was wrong.

Cheers,

John

[Marcellus]

Expose a public property of type Form, from B. Assign A
to the public property. Then B has a reference to A, you
can iterate the controls collection to identify your
target control and manipulate it as you wish.
I'm sure there's a more elegant solution, but this will
work in the interim.

-----Original Message-----
Hi,

I have a form (FormA) which was loaded using Application.Run when my apploads. This form has a button which loads Form B using "FormB myForm=newFormB()". My question is, how do I access and modify the value of a controlon FormA from FormB?

I thought this would be easy but I was wrong.

Cheers,

John
.

[JSM]

Hi Mikael,

The example you gave sends information from A to B. What I can't figure out
is how can I send information from B to A. Since A was created using
Application.Run I don't have an instance name of A which I could use.

Cheers,

John

"Mikael" <_N******@chell o.se> wrote in message
news:O0******** *****@tk2msftng p13.phx.gbl...

Heres a simple example using a property.

Regards, Mikael

using System;
using System.Windows. Forms;

public class A : Form
{
private Button btn = new Button();
B b = new B();

public A()
{
btn.Text = "Load form B";
btn.Click += new EventHandler(bt n_Click);
this.Controls.A dd(btn);
}

private void btn_Click(objec t sender, EventArgs e)
{
b.Show();
}

protected override void OnMouseDown(Mou seEventArgs e)
{
b.LabelText = "Hello from A!";
}
static void Main()
{
Application.Run (new A());
}
}

public class B : Form
{
private Label lbl = new Label();
public B()
{
lbl.Dock = DockStyle.Fill;
this.Controls.A dd(lbl);
}

public string LabelText
{
set { lbl.Text = value; }
}
}

"JSM" <12*@123.com> skrev i meddelandet
news:uA******** ******@TK2MSFTN GP12.phx.gbl...

Hi,

I have a form (FormA) which was loaded using Application.Run when my app
loads. This form has a button which loads Form B using "FormB myForm=new
FormB()". My question is, how do I access and modify the value of a

control

on FormA from FormB?

I thought this would be easy but I was wrong.

Cheers,

John

[AlexS]

{
A a=new A();
Application.Run (a);
}

Does this help?

"JSM" <12*@123.com> wrote in message
news:%2******** ********@TK2MSF TNGP10.phx.gbl. ..

Hi Mikael,

The example you gave sends information from A to B. What I can't figure out is how can I send information from B to A. Since A was created using
Application.Run I don't have an instance name of A which I could use.

Cheers,

John

"Mikael" <_N******@chell o.se> wrote in message
news:O0******** *****@tk2msftng p13.phx.gbl...

Heres a simple example using a property.

Regards, Mikael

using System;
using System.Windows. Forms;

public class A : Form
{
private Button btn = new Button();
B b = new B();

public A()
{
btn.Text = "Load form B";
btn.Click += new EventHandler(bt n_Click);
this.Controls.A dd(btn);
}

private void btn_Click(objec t sender, EventArgs e)
{
b.Show();
}

protected override void OnMouseDown(Mou seEventArgs e)
{
b.LabelText = "Hello from A!";
}
static void Main()
{
Application.Run (new A());
}
}

public class B : Form
{
private Label lbl = new Label();
public B()
{
lbl.Dock = DockStyle.Fill;
this.Controls.A dd(lbl);
}

public string LabelText
{
set { lbl.Text = value; }
}
}

"JSM" <12*@123.com> skrev i meddelandet
news:uA******** ******@TK2MSFTN GP12.phx.gbl...

Hi,

I have a form (FormA) which was loaded using Application.Run when my app loads. This form has a button which loads Form B using "FormB myForm=new FormB()". My question is, how do I access and modify the value of a

control

on FormA from FormB?

I thought this would be easy but I was wrong.

Cheers,

John

[Arran Pearce]

if in FormB's constructor you have a param which receieves a referance of a
form control.

then when you call FormB from FormA use the this keyword to pass the
referance.

FormB will then be able to access public elements in FormA.
"JSM" <12*@123.com> wrote in message
news:uA******** ******@TK2MSFTN GP12.phx.gbl...

Hi,

I have a form (FormA) which was loaded using Application.Run when my app
loads. This form has a button which loads Form B using "FormB myForm=new
FormB()". My question is, how do I access and modify the value of a control on FormA from FormB?

I thought this would be easy but I was wrong.

Cheers,

John