Windows Forms ToolTip will not re-appear after first use

Question

I have a Windows Forms C# application where I would like to use a tooltip on one of the text boxes. I initialize the tool-tip in the constructor of the Form class, and it wo

Answer 1

System.Windows.Forms.ToolTip ToolTip1 = new System.Windows.Forms.ToolTip();

private void textBox_MouseHover(object sender, EventArgs e)
{
    ToolTip1.Show("YOUR TEXT", textBox);
}

private void textBox_MouseLeave(object sender, EventArgs e)
{
    ToolTip1.Active = false;
    ToolTip1.Active = true;
}