Question

When a particular event appears, I want to open a new Form (using ShowDialog), and while this dialog is open, I want to ignore / dequeue all incoming similar events raised.

It’s possible? How?

My event method in which I try to manage is like :

void barcode_Scanned(object sender, string value)
{
    if(value.StartsWith("d")
    {
        // ShowDialog
    }
}

Scenario:

• BarCode Scan
• otherForm.ShowDialog()
• BarCode Scan -> Ignored because dialog already opened
• BarCode Scan -> Ignored because dialog already opened
• otherForm is closed
• BarCode Scan
• otherForm.ShowDialog() -> Possible because previous closed

Thanks !

Answer 1

You could simply use a variable or property, such that:

private bool isDialogOpen = false;

void barcode_Scanned(object sender, string value)
{    
    if(value.StartsWith("d") && !isDialogOpen)
    {
        isDialogOpen = true;
        // ShowDialog            
        isDialogOpen = false;
    }
}