c# - Prevent double-click from double firing a command

Question

Given that you have a control that fires a command:

<Button Command="New"/>

Is there a way to prevent the command from being fired twice if the user double clicks on the command?

EDIT: What is significant in this case is that I am using the Commanding model in WPF.

It appears that whenever the button is pressed, the command is executed. I do not see any way of preventing this besides disabling or hiding the button.

Answer 1

It is possible that any event handler that contains code that requires a significant process time, can result in a delay to the disabling of the button at question; regardless to where the disabling line of code is called within the handler.

Try the proofs below and you will see that disable/enable has no correlation to the registration of events. The button click event is still registered and is still handled.

Proof by Contradiction 1

private int _count = 0;
    
private void btnStart_Click(object sender, EventArgs e)
{
    btnStart.Enabled = false;
    
    _count++;
    label1.Text = _count.ToString();

    while (_count < 10)
    {            
        btnStart_Click(sender, e);            
    }           

    btnStart.Enabled = true;
}

Proof by Contradition 2

private void form1_load(object sender, EventArgs e)
{
    btnTest.Enabled = false;
}

private void btnStart_Click(object sender, EventArgs e)
{
    btnTest.Enabled = false;
    btnTest_click(sender, e);
    btnTest_click(sender, e);
    btnTest_click(sender, e);
    btnTest.Enabled = true;
}

private int _count = 0;

private void btnTest_click(object sender, EventArgs e)
{
    _count++;
    label1.Text = _count.ToString();
}