How do I capture the enter key in a windows forms combobox

Question

How do I capture the enter key in a windows forms combo box when the combobox is active?

I\'ve tried to listen to KeyDown and KeyPress and I\'ve created a subclass a

Answer 1

In case you define AcceptButton on your form, you cannot listen to Enter key in KeyDown/KeyUp/KeyPress.

In order to check for that, you need to override ProcessCmdKey on FORM:

protected override bool ProcessCmdKey(ref Message msg, Keys keyData) {
    if ((this.ActiveControl == myComboBox) && (keyData == Keys.Return)) {
        MessageBox.Show("Combo Enter");
        return true;
    } else {
        return base.ProcessCmdKey(ref msg, keyData);
    }
}

In this example that would give you message box if you are on combo box and it works as before for all other controls.