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close an open form when you open it again c#

Hurt Hare answered on July 5, 2020 Popularity 1/10 Helpfulness 1/10

answer close an open form when you open it again c#

related c# open a new form and close current

close an open form when you open it again c#

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// Look through all open forms to see if there is already a Form2 open.
// If it is, Close it. This prevents the user from (purposely) having 5 of the same forms open.
// If you try to cycle through open forms after closing one, it crashes, 
//     because it edits the list of forms while cycling through it
// This is why it is converted into a list of forms first.
foreach (Form frm in Application.OpenForms.Cast<Form>().ToList())
{
    if (frm.Name == "Form2")
    {
        frm.Close();
    }
}

Popularity 1/10 Helpfulness 1/10 Language csharp

Source: Grepper

Tags: c# when

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Contributed on Oct 22 2021

Hurt Hare

0 Answers Avg Quality 2/10

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c# open a new form and close current

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{
    this.Hide();
    Form1 f1 = new Form1();
    f1.ShowDialog();
    this.Close();
}

Popularity 8/10 Helpfulness 6/10 Language csharp

Source: stackoverflow.com

Tags: c#

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Contributed on Jul 05 2020

Helpful Hedgehog

0 Answers Avg Quality 2/10

close an open form when you open it again c#

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close an open form when you open it again c#

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c# open a new form and close current

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