How to show the error without mouse hover on the error provider?

Question

How to show the error without mouse hover on the error provider ?

this.errorProvider1.SetError(textBox1, "This field must contain text");

Answer 1

Might not be the best chioce but should work

    if (textBox1.Text == "")
    {
         ErrorProvider myerror = new ErrorProvider();
         ToolTip mytip = new ToolTip();
         myerror.SetError(textBox1, "This field must contain text");
         mytip.Show("This field must contain text", textBox1);
    }