/C#/Close an open form when you open it again c#

Close an open form when you open it again c#

// 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();
    }
}

Similar codes

10 votes129 views3 answers
Unity C# instantiate prefab
C#
0 vote140 views1 answer
Cs foreach int
C#
5 votes166 views3 answers
Number to number array
C#
0 vote110 views1 answer
ExceptionFilterAttribute exception-handler-middleware-not-catching
C#
1 vote178 views1 answer
How to open any file on button click in winforms
C#
3 votes143 views1 answer
Create a directory if it doesnt exist c#
C#
0 vote91 views1 answer
Unity download image from web
C#
1 vote159 views1 answer
Unity get scrollbar value
C#
0 vote132 views1 answer
You are trying to create a MonoBehaviour using the 'new' keyword.
C#
0 vote136 views1 answer
Unity deactive all object in list
C#