Creating splash screen for WinForm application

A professional WinForm application should have the following short trick: an introduction screen for a few seconds. Some may use splash screen only for visual entertainment, others may load important data while splash screen is visible. This screen should tell some

ComboBox with long text

Many people around me have already encountered this problem. What if I want to show longer text in a combobox than the length of this component? A really short code will solve this problem. I have created a winform with