Question

I have been tweaking my program all day and I am having a problem hiding a form which will pop up saying “Please wait”

For example:

    private void button12_Click(object sender, EventArgs e)
    {
        form2 wait = new form2();
        pw.Show();
    }
    private void button13_Click(object sender, EventArgs e)
    {
        form2 wait = new form2();
        pw.Hide();
    }

This will not work, although I am sure this isn’t news to the casual C# programmer. Is there a simple way to do what I am attempting? I have tried searching online and I did find something although I wasn’t 100% sure what they were trying to do. I was going to find an example to show you but I closed page – Typical. However I think they were trying to overide the show and give you control over the .show with a bool?

Answer 1

The code isn’t working as you expect it to because the form2 inside of button12_Click is different from the form2 inside of button13_click. Notice that you are using the new keyword twice. So in button13_click, you are creating a new form2, and then hiding it, even though you haven’t even shown it yet!

Instead you can create a single form2 instance to share between your two methods:

//define this code outside both of the methods below
form2 _waitForm = new form2();

private void button12_Click(object sender, EventArgs e)
{
    _waitForm.Show();
}
private void button13_Click(object sender, EventArgs e)
{
    //this will hide the same form2 that was shown in button12_Click
    _waitForm.Hide();
}