应爱在深秋的求助，现将关于如何通过身份证自动计算出生日期的代码发布如下：

1、新建一个窗体，添加身份证号码、出生日期、性别、年龄这四个文本框，名称设定为：sfz,csrq,xb,nl

2、在身份证号码控件的失去焦点事件中写下如下代码：

Private Sub sfz_LostFocus()
    Me.Refresh
    Me.csrq.Enabled = True
    Me.nl.Enabled = True
    If Len(sfz) = 15 Then
        Me.csrq.SetFocus
        Me.csrq = "19" & Mid(sfz, 7, 2) & "-" & Mid(sfz, 9, 2) & "-" & Mid(sfz, 11, 2)
        Me.nl.SetFocus
        Me.csrq.Enabled = False
        Me.nl = Int(DateDiff("d", csrq, date) / 365) & "周岁"
        Me.xb.SetFocus
        Me.nl.Enabled = False
        If Mid(sfz, 15, 1) Mod 2 = 0 Then
            Me.xb = "女"
        Else
            Me.xb = "男"
        End If
        Me.xl.SetFocus
        Me.xb.Enabled = False
        Exit Sub
    Else
        If Len(sfz) = 18 Then
            Me.csrq.SetFocus
            Me.csrq = Mid(sfz, 7, 4) & "-" & Mid(sfz, 11, 2) & "-" & Mid(sfz, 13, 2)
            Me.nl.SetFocus
            Me.csrq.Enabled = False
            Me.nl = Int(DateDiff("d", csrq, date) / 365) & "周岁"
            Me.xb.SetFocus
            Me.nl.Enabled = False
            If Mid(sfz, 17, 1) Mod 2 = 0 Then
                Me.xb = "女"
            Else
                Me.xb = "男"
            End If
            Me.xl.SetFocus
            Me.xb.Enabled = False
        Else
            MsgBox ("您输入的身份证号码有误,请重新核实！")
            Me.sfz.SetFocus
        End If
    End If
End Sub

3、实现功能：

    A、根据身份证号码自动计算出生日期

    B、根据身份证号码自动计算年龄（周岁）

    C、自动判断身份证号码的位数是否正确。

    D、根据身份证号码自动判断性别。