Calling method in child form from MDI main form

[Randy]

The following code, which runs when I click File->Save in my main form,
finds my save button in my mdi child for just fine. The question is: how do
I invoke the Save method in the child form?

Thanks....

protected void SaveMenuSelect(Object sender, System.EventArgs e)
{
Form form = (Form)this.ActiveMdiChild;
foreach(Control c in form.Controls)
{
if(c.Name == "btnSave")
{
Console.WriteLine("control is btnSave");
}
}
}

 

[Shakir Hussain]

Randy,

The better way to do is

Form [] allChilds =myMainForm.MdiChildren;

foreach(Form pChild in allChilds)
{
pChild.Save(); //your public method.
}

Keep a public method in child form. After getting child forms, got through
each form and fire save method.

Shak.

 

[Randy]

Thanks for the response. If I put Console.Writeline(pChild.Name.ToString());
inside the foreach loop, it prints out the correct form name. If I put
pChild.mySave(), where mySave() is a public method inside the child form, I
get a compile error stating that mySave() is not defined. Any thoughts?

Thanks....

Randy,

The better way to do is

Form [] allChilds =myMainForm.MdiChildren;

foreach(Form pChild in allChilds)
{
pChild.Save(); //your public method.
}

Keep a public method in child form. After getting child forms, got through
each form and fire save method.

Shak.

The following code, which runs when I click File->Save in my main form,
finds my save button in my mdi child for just fine. The question is: how do
I invoke the Save method in the child form?

Thanks....

protected void SaveMenuSelect(Object sender, System.EventArgs e)
{
Form form = (Form)this.ActiveMdiChild;
foreach(Control c in form.Controls)
{
if(c.Name == "btnSave")
{
Console.WriteLine("control is btnSave");
}
}
}

 

[Shakir Hussain]

Randy,

What you get from MdiChildren is Form[].

You have to cast it to your Childform name to get access to the methods

foreach(Form pChild in allChilds)
{
try
{
MyChildForm pForm = (MyChildForm )pChild;
if(pForm != null)
pForm.mySave();
}
catch(Exception e)
{
//invalid cast exception
}
}

Thanks for the response. If I put Console.Writeline(pChild.Name.ToString());
inside the foreach loop, it prints out the correct form name. If I put
pChild.mySave(), where mySave() is a public method inside the child form, I
get a compile error stating that mySave() is not defined. Any thoughts?

Thanks....

Randy,

The better way to do is

Form [] allChilds =myMainForm.MdiChildren;

foreach(Form pChild in allChilds)
{
pChild.Save(); //your public method.
}

Keep a public method in child form. After getting child forms, got through
each form and fire save method.

Shak.

The following code, which runs when I click File->Save in my main form,
finds my save button in my mdi child for just fine. The question is:

how
do

I invoke the Save method in the child form?

Thanks....

protected void SaveMenuSelect(Object sender, System.EventArgs e)
{
Form form = (Form)this.ActiveMdiChild;
foreach(Control c in form.Controls)
{
if(c.Name == "btnSave")
{
Console.WriteLine("control is btnSave");
}
}
}

 

[Randy]

That's got it. Many thanks for all the help!

Randy

Randy,

What you get from MdiChildren is Form[].

You have to cast it to your Childform name to get access to the methods

foreach(Form pChild in allChilds)
{
try
{
MyChildForm pForm = (MyChildForm )pChild;
if(pForm != null)
pForm.mySave();
}
catch(Exception e)
{
//invalid cast exception
}
}

Thanks for the response. If I put Console.Writeline(pChild.Name.ToString());
inside the foreach loop, it prints out the correct form name. If I put
pChild.mySave(), where mySave() is a public method inside the child

form,

I
get a compile error stating that mySave() is not defined. Any thoughts?

Thanks....

Randy,

The better way to do is

Form [] allChilds =myMainForm.MdiChildren;

foreach(Form pChild in allChilds)
{
pChild.Save(); //your public method.
}

Keep a public method in child form. After getting child forms, got through
each form and fire save method.

Shak.

The following code, which runs when I click File->Save in my main form,
finds my save button in my mdi child for just fine. The question is: how
do
I invoke the Save method in the child form?

Thanks....

protected void SaveMenuSelect(Object sender, System.EventArgs e)
{
Form form = (Form)this.ActiveMdiChild;
foreach(Control c in form.Controls)
{
if(c.Name == "btnSave")
{
Console.WriteLine("control is btnSave");
}
}
}

 

[Daniel Pratt]

Hi Randy,

Supposing that the class name of the form with the public Save method is
ChildForm, and supposing all your MDI child forms are instances of
ChildForm, you could write the code like this:

foreach(ChildForm childForm in this.MdiChildren)
{
childForm.Save();
}

If not all of the MDI child forms are instances of ChildForm, you could
write it like this:

foreach(Form form in this.MdiChildren)
{
ChildForm childForm = form as ChildForm;

if (childForm != null)
{
childForm.Save();
}
...
}

Thanks for the response. If I put Console.Writeline(pChild.Name.ToString());
inside the foreach loop, it prints out the correct form name. If I put
pChild.mySave(), where mySave() is a public method inside the child form, I
get a compile error stating that mySave() is not defined. Any thoughts?

Thanks....

Randy,

The better way to do is

Form [] allChilds =myMainForm.MdiChildren;

foreach(Form pChild in allChilds)
{
pChild.Save(); //your public method.
}

Keep a public method in child form. After getting child forms, got through
each form and fire save method.

Shak.

The following code, which runs when I click File->Save in my main form,
finds my save button in my mdi child for just fine. The question is:

how
do

I invoke the Save method in the child form?

Thanks....

protected void SaveMenuSelect(Object sender, System.EventArgs e)
{
Form form = (Form)this.ActiveMdiChild;
foreach(Control c in form.Controls)
{
if(c.Name == "btnSave")
{
Console.WriteLine("control is btnSave");
}
}
}