[填空题] 建立一个通讯录的随机文件phonBook.txt,内容包括姓名、电话、地址和邮编,用文本框输入数据。单击“添加主记录”按钮command1时,将文本框数据写入文件,单击“显示”按钮Command2时,将文件中所有记录内容显示在立即窗口。 Private Type PerData Name1 As String Phon As String * 11 Address As String * 10 Posted As String * 6 End Type ___________________________’定义PerData类型的变量xDataPrivate Sub Form_Load() Open "C:phonBook.txt"For Random As 1End SubPrivate Sub Command1_Click() xData. Name1=Text1.Text xData. Phon=Text2.Text ________=Text3.Text ’地址 xData. PostCd=Text4.Text Put #1, 1, xData Text1.Text=" ":Text2.Text="" Text3.Text="":Text4.Text=""End SubPrivate Sub Command2_Click() reno=LOF(1)/Len(xData) i=1 Do While i<= reno Get #1, i, xData Debug.Print xData.Name 1,______, xData. Address, xData. PostCd i=i+1 LoopEnd Sub