I want to restrict a form to not ope if it is already open.

Faizan Khan

Behind the manue strip i put this code form opeing a Form

private void searchByWordToolStripMenuItem1_Click(object sender, EventArgs e)

{

Form2_Search_Word SearchWord = new Form2_Search_Word();

SearchWord.Show();

SearchWord.MdiParent = this;

}

But the problem is is when i click the menu strip is display a form as i click it again it shows another, another another. I want to restrict it if it already open and want to focus it. pleaes guide me i am the beginner

2 Replies

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Sudhakar Chaudhary13y ago
Accepted answer
bool flag = false;

            FormCollection fc = Application.OpenForms;
            for (int i = 0; i < fc.Count; i++)
            {
                if (fc[i].Name == "Form2")
                {
                    flag = true;
                }
            }
            if (flag == false)
            {
                Form2 f2 = new Form2();
                f2.MdiParent = this;
                f2.Show();
            }
            else
            {
                var result = MessageBox.Show("Form 2 Is Already Running. Want to Focus On It.", "Already Running.", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                if (result == DialogResult.Yes)
                {
                    for (int i = 0; i < fc.Count; i++)
                    {
                        if (fc[i].Name == "Form2")
                        {
                            fc[i].Focus();
                        }
                    }
                }
            }
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Faizan Khan13y ago
This is Working thank you. I wasnt know that lot coding required for a from restriction.;-( Can you define me FormCollection is necessary? what is this(class)?
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