Mdi Child and Parent Form Opening & Closing

Ankush

In my Windows Application using c#, I have created Mdi parent form and few child forms. I have linked the forms correctly, but I want that, If any child form is open then the parent form should not be working or be able to select till the child form is closed. How can I do it?

Thanks in Advance !!!

12 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sujeet Suman10y ago
Accepted answer
Ankush please once try below code. This may help you:

Step-(01) On your MDIParent form on every menu item click you need to disable menuitem control. Like below:

// Take a static variable type MenuItem
public static MenuStrip menustrip;

public MDIParent1()
{
   InitializeComponent();
   menustrip = this.menuStrip1; // Initialize menustrip variable
}
private void item01ToolStripMenuItem_Click(object sender, EventArgs e)
{
ChildForm01 frm = new ChildForm01();
   frm.Show();
   menuStrip1.Enabled = false; // Make menuStrip1 disable
}

Step-(02) On your every child form closing make menuStrip1 enable. Like Below

private void ChildForm01 _FormClosing(object sender, FormClosingEventArgs e)
{
   MDIParent1.menustrip.Enabled = true; // Make menuStrip1 enable
}

If this is helpful for you then please accept my Answer.
Ankush10y ago
Thanks for the help, the code worked perfectly.
Ranjit Powar10y ago
Check this demo.

http://www.codeproject.com/Articles/48436/MDI-child-as-dialog-form-MDI-modal-workaround
Ankush10y ago
In the above image, you can see Home page - Parent Form that contains menu strip control, and the child form below with 3 buttons. My Task:- when any child form is open then the menu strip in parent form should be disabled or else any control should not work until the child form is closed. in the image you can see that I have opened 1 child form and still I can access the menu strip in the parent form. So how can I disable menu strip or any other control on parent form???
Ankush10y ago
In the above image, you can see Home page - Parent Form that contains menu strip control, and the child form below with 3 buttons. My Task:- when any child form is open then the menu strip in parent form should be disabled or else any control should not work until the child form is closed. in the image you can see that I have opened 1 child form and still I can access the menu strip in the parent form. So how can I disable menu strip or any other control on parent form???
Ankush10y ago
Ranjit Powar10y ago
If you want that MDI form do operations while child form is opened then use show () method.

child.Show ();

If it helps you select it as correct answer.
Ranjit Powar10y ago
If you want that MDI form do operations while child form is opened then use show () method.

child.Show ();

If it helps you select it as correct answer.
Ranjit Powar10y ago
Please explain your problem.
Ankush10y ago
the code u have written is the same as I wrote, but there is a menu strip on parent form which contains menu item for Logout process.
Ranjit Powar10y ago
Open child form as dialog like below

ChildForm chld= new ChildFirm();
chld.ShowDialog();

If it helps you select it as correct answer.
Mithun Pattankar10y ago
Ankush,
You are defeating the whole purpose of MDI forms concept. But still you can have look at this link, this might help
http://stackoverflow.com/questions/11683141/open-one-child-form-at-a-time

Accept it works for you.