主题：ValueChanged

If Forms ("过程记录").opened Then   
    Dim t1 As Table = Tables("过程记录_Table10")
    Dim S1 As String = t1.Current(t1.ColS("目录树生成列"))
    Dim S2 As String = Forms ("任务说明").Controls("TextBox2").text
    Dim S3 As String = "," & S2
    S1 = S1.Replace(S3, "")
    S1 = S1.Replace(S2, "")
    t1.Current(t1.ColS("目录树生成列")) = S1
End If

.NET Framework 版本：4.0.30319.1
Foxtable 版本：2022.8.18.1
错误所在事件：窗口, 任务说明, TextBox2, ValueChanged
详细错误信息：
String cannot be Of zero length.
Parameter name: oldValue