请教下面VB 代码的意思 Private Sub Command1_Click() If Combo1.Text "" And Combo2.Text "" And C

请教下面VB 代码的意思 Private Sub Command1_Click() If Combo1.Text "" And Combo2.Text "" And C

组合框1的值不为空 并且 组合框2的值不为空 并且 C