To force all MDI parent and child forms to close on MDIParent Exit or MDIParent Close

Hi,
How To force all MDI parent and child forms to close on MDIParent Exit or MDIParent Close?
when i am trying to exit/close MDI parent it raises formclosing event for MDI childs.
with this it shows save filedialog for each mdi child and at the end one more save file dialog from MDI parent.

My query is, how to close all MDI childs at once on MDI parent Exit like Visual Studio does with one save file dialog with multiple file names.

please help me.

You can iterate the list of all open child forms and if it is more than 1, then give user an option of "Save All" in a dialog box. If the user selects "Save All", you can loop through the list of all open forms and save the file/form via code, rather showing the Save file dialog.

hi,

i need Visual Studio kind of behavior.

Hi

You can check the status of each child for its saved state and if it is unsaved add it to some list. after completion, you can show the list of unsaved files in a dialog with the file names under which they will be saved. if the file is untitled then either you can ask for file name or provide a default one.

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Happy Debugging Bimal

Hi,
You need to create a event handler for parent form .when the parent form closing event you fire the event and close all other child form.
i hope it will help you...

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Best Regards, C.Gnanadurai

Hi,

that's what Parent Form Closing event is doing.

hi,

did u get my point , if so then how abt visual studio is working in different way.

check,

1.if i need to close manually MDI childs i should get Save File dialog for each.
2.if i close Parent -MDI Parent then all MDI child names should appear in one Save File Dialog.

it is just like Visual Studio.........behavior i need

To force all MDI parent and child forms to close on MDIParent Exit or MDIParent Close

Hi,
How To force all MDI parent and child forms to close on MDIParent Exit or MDIParent Close?
when i am trying to exit/close MDI parent it raises formclosing event for MDI childs.
with this it shows save filedialog for each mdi child and at the end one more save file dialog from MDI parent.

My query is, how to close all MDI childs at once on MDI parent Exit like Visual Studio does with one save file dialog with multiple file names.

please help me.

That is how the MdiParent/Child works.
It is supposed to raise the event on the child forms, and vice versa, because of the merged menu systems.

You need to interrogate the "sender" object in the event handlers to see who raised the event. The current form or another one.

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Mark the best replies as answers. "Fooling computers since 1971."

Hi,
as u said "You need to interrogate the "sender" object in the event handlers to see who raised the event. The current form or
another one"

When ever MDIParent is Closed via , FormClose or FormExit its going to raise MDIChild FormClosing Event.

then if i check 'sender' object obviously will show MDIChild as current event caller form

please help me with solution.

What you ask requires a little bit of work.
Employ Object Oriented Programming techinique number one.
Delegation. Delegate, or assign the responsibility of file management to a dedicated class.
It should maintain a list of all open files.

Create the same object instance of this type to manage all opening and closing files in the Parent class.
Pass this same instance to each form as you open them.

When the closing event occurs let this FileManager object generate the user prompts and close the files.

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Mark the best replies as answers. "Fooling computers since 1971."

Actually, the FormClosingEventArgs parameter being passed on the Form_Closing eventhas a property called CloseReason that can tell us if the form is closing because of the MDI parent form closing.
ie:

If

e.CloseReason = CloseReason.MdiFormClosing Then

'Call the "Exit Application?" code

'If EXIT then call the save the form, otherwise don't try to close

End If