C# 在方法中调用方法时是否可以将 EventArgs 转换为 FormClosingEventArgs？

Question

I've made a form closing event when X is pressed, but I also want the 'Exit' button to call this same method yet it draws me error every time I change stuff.

--- This code below is the form closing event ---

// if user pressed 'Exit' button or red cross
private void TempConverterForm1_FormClosing(object sender, FormClosingEventArgs e) {
    DialogResult exitdialog = MessageBox.Show("Are you sure you want to quit?", "Quit?", MessageBoxButtons.YesNoCancel);

    if (exitdialog == DialogResult.Yes) {
        e.Cancel = false;
    }

    else {
        e.Cancel = true;
    }
}

--- This code below is the code I'm trying to solve ---

// if the 'exit' button is pressed
private void btn_Exit_Click(object sender, EventArgs e) {
    TempConverterForm1_FormClosing(sender, (FormClosingEventArgs) e);
}

I've tried without FormClosingEventArgs first but on itself it says that EventArgs can't be converted to closing event. I put FormClosingEventArgs but now it tries to convert from MouseEventArgs to FormClosingEventArgs even though I relate to button click and not mouse click. I tried to do research but the problem repeats and builds up with different error messages and I got lost and decided I need help with this.

Answer 1

Just do this.Close() in btn_Exit_Click. This will fire Form_Closing correctly with the right arguments, and your cancel will still work.

private void btn_Exit_Click(object sender, EventArgs e)
{
       this.Close();
}