Question

I got a toolstripbutton, and when I click it, I want to make it stay “pressed” or “selected”. Like a switch. And when I click another, make the pressed one “unpressed” again. Any ideas?

Answer 1

I think you want to use the CheckOnClick property. Set it to true, and the button should behave as you describe. In order to get (or set) the current state, use the Checked property.

Here is a full working sample:

public partial class Form1 : Form
{
    private readonly IEnumerable<ToolStripButton> mutuallyExclusiveButtons;

    public Form1()
    {
        InitializeComponent();
        mutuallyExclusiveButtons = new[] { firstButton, secondButton };
    }

    private void ToolStripButton_Click(object sender, EventArgs e)
    {
        ToolStripButton button = sender as ToolStripButton;
        if (button != null && button.Checked && 
            mutuallyExclusiveButtons.Contains(button))
        {
            foreach (ToolStripButton item in mutuallyExclusiveButtons)
            {
                if (item != button) item.Checked = !button.Checked;
            }
        }
    }
}

firstButton and secondButton are ToolStripButtons, both have CheckOnClick set to true, and their Clicked events hooked up to ToolStripButton_Click. This works also if there are more than two buttons in the group of buttons in which only one should be checked, just add any needed additional buttons to the mutuallyExclusiveButtons sequence.