how to manipulate mdi parent form control set visible false from child form

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I want to set visibility false of a picturebox that is on mdi parent form. I wrote following code on child form but it doesn't work...pls help me

C#

private void Bill_Issue_FormClosed(object sender, FormClosedEventArgs e)
        {
            MasterForm f = new MasterForm();
            f.pictureBox1.Visible = true;         
        }

Thanks in adv.

Posted 15-May-12 21:33pm

rajesh@1989

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jerome dela cruz · Answer 1 · 2012-05-15T22:06:00

hi,

first thing you do is to expose the parent form though properties.

for example

in the CHILD form

//create a properties with the typed of MDIform in CHILDFORM
// frmMainMDI

C#

public frmMainMDI ParentMDI
{
get{return this.ParentForm;}
set{this = value; }

}

call the CHILDFORM like this in MDI form

C#

frmChild ofrmChild = new frmChild()
ofrmChild.ParentMDI = this;
ofrmChild.show()

setting the picture box in MDIFORM:

C#

ParentMDI.PictureBox.Enable = false;

Comfizzy · Answer 2 · 2012-05-15T23:23:00

Solution 2

If Bill_issue_Form is a child form then try

C#

private void Bill_Issue_FormClosed(object sender, FormClosedEventArgs e)
        {
            this.ParentForm.pictureBox1.Visible = false;               
        }

Posted 15-May-12 23:23pm

Comfizzy

v3

Comments

rajesh@1989 16-May-12 6:04am

thanks for ur rply...
sorry i want to set pictureBox1.visible=true

i wrote your solution like this:

this.MyMdfForm.pictureBox1.visible=true;
but it does work.

Comfizzy 16-May-12 6:06am

Cool stuff, you can mark my solution as an Answer.

rajesh@1989 16-May-12 6:53am

picturebox1 always show visible false property