Closing MDI child closes the parent form

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C#

I've created a new MDI parent form. I've set MDI Container of that form to True. I've created a menu strip. While clicking on the menu strip an MDI child has to be shown. The MDI Child has to be shown only if a condition is true. So I added the piece of code in the MDI Child - Form Load event handler like this,

private void Form_Load(...)
{
...
  if(condition == false)
  {
     this.Close();
  }

}

But unfortunately, the entire application closes instead of the child form alone. Any solutions please?

What I have tried:

I've tried using this.Dispose() as well. That doesn't work too. If I use this.Close() there is no exception that is generated, while using this.Dispose() it throws an exception saying that : "Cannot show Disposed object".

Any ideas?