主题：点击“按钮”项目强退是为什么？

在窗口1中有1按钮，作用是将符合条件的人员导到另1个表中，但一点击就强退，不知什么原因，求帮助！！！！！！

代码如下：

Dim Result As DialogResult
Result = MessageBox.Show("确定导出?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question,MessageBoxDefaultButton.Button2)
Dim Cols1() As String = {"工作单位","县公司","姓名","性别","身份证号码","文化程度","现岗位名称","参加工作时间","现工种工作时间","原技术资格等级","原等级取得时间","原资格证书工种","原资格证书编号","鉴定等级","申报鉴定工种","鉴定批次","申报性质","用工性质","原人才当量值","备注","照片","是否合格","资格审核","鉴定时间"}
Dim Cols2() As String = {"工作单位","县公司","姓名","性别","身份证号码","文化程度","现岗位名称","参加工作时间","现工种工作时间","原技术资格等级","原等级取得时间","原资格证书工种","原资格证书编号","鉴定等级","申报鉴定工种","鉴定批次","申报性质","用工性质","原人才当量值","备注","照片","是否合格","资格审核","鉴定时间"}
For Each dr1 As DataRow In DataTables("报名登记表").Select("[资格审核] = True ")
    Dim dr2 As DataRow = DataTables("审核合格表").Find("身份证号码 = '" & dr1("身份证号码") & "' And 鉴定批次 = '" & dr1("鉴定批次") & "'")
    If dr2 Is Nothing Then
        dr2 = DataTables("审核合格表").AddNew
    End If
    For i As Integer = 0 To Cols1.Length -1
        dr2(Cols2(i)) = dr1(Cols1(i))
    Next
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