主题：[求助] 判断空值问题

 空值命令？当前行？

 Dim r As Row = e.Table.Current

 If r.IsNull("第一列") Then

 End If

Dim t As Table = Tables("机房板件端口表")
Dim r As Row = e.Table.Current
If r Is Nothing Then  Return
With Tables("机房设备板件表")
    If .Current IsNot Nothing Then
        If r.IsNull("设备编号") Then         
            t.Filter = "机房名称 = '" & .Current("机房名称") & "' And 设备型号 = '" & .Current("设备型号") & "'   And 设备编号 Is Null  And 板件槽位 = '" & .Current("板件槽位") & "'  And 板件型号 = '" & .Current("板件型号") & "'"
        Else
            t.Filter = "机房名称 = '" & .Current("机房名称") & "' And 设备型号 = '" & .Current("设备型号") & "'  And 设备编号 = '" & .Current("设备编号") & "'  And 板件槽位 = '" & .Current("板件槽位") & "' And 板件型号 = '" & .Current("板件型号") & "'"
        End If
    Else
        t.Filter = "False"
    End If
   
End With