mdi application problem

Question

1.00/5 (2 votes)

See more:

I am creating mdi application
in that i have some child form

my broblem is :

I open child form using menuStrip
when i open first child form(may be any form)
afterthat when i open another child form, first child form i had opened should be automatically closed.

Posted 3-Jun-12 18:14pm

Add a Solution

Comments

Sergey Alexandrovich Kryukov 4-Jun-12 0:20am

Not a question. What does that mean, "to open a form"? (Create, show, what?)
Is there any special reason to use such a bad thing as MDI?
--SA

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2012-06-03T20:09:00

To do this, you need to do two things:
1) Keep a reference in your MDI parent class of what instances of each form type are open. I would probably make it an instance of the actual form:

C#

private MyMDIChild current = null;
...
if (current != null)
   {
   current.Close();
   }
current = new MyMDIChild();
current.Show();

2) Attach a handler to the child forms FormClosing event before you show it, and return "current" to null in the handler.