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| sealed class frm_articles : Form {
private static frm_articles myInstance = null;
private frm_articles(){
InitializeComponent();
}
public static void Display(Form parent){
if(myInstance == null){
myInstance = new frm_articles();
myInstance.MdiParent = parent.ActiveForm;
myInstance.Show();
}
}
private void frm_articles_FormClosed(object sender,FormClosedEventArgs e){
myInstance = null;
}
}
private void articlesToolStripMenuItem_Click(object sender, EventArgs e)
{
frm_articles.Display(frm_main);
} |
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