将值分配给SSIS脚本组件新的“输出"列 [英] Assign value to SSIS Script Component new Output Column

问题描述

我确定这是一个简单的问题，但是我试图将2列合并到一个新的输出列中，但是还没有运气.每次我得到对象引用未设置为对象的实例"时.错误

I'm sure this is a simple issue, but I'm trying to combine 2 columns into a new output column, but have not had any luck with it. Each time I get an 'Object reference not set to an instance of an object.' error

这是我的代码:

Imports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper

Public Class ScriptMain
    Inherits UserComponent

    Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
        '
        ' Add your code here
        '
        Dim tmpStr As String
        tmpStr = ""
        If Not IsNumeric(Row.addrmap.ToString) Then
            tmpStr = Row.addrmap.ToString.Substring(Row.addrmap.ToString.Length - 2, 1)
            tmpStr = Row.addrmap.ToString.Remove(Row.addrmap.ToString.Length - 2, 1).PadLeft(3, CChar("0")) & " " & tmpStr.PadLeft(3, CChar("0")) & " " & Row.addrpar.ToString

        Else
            tmpStr = Row.addrmap.ToString.PadLeft(3, CChar("0")) & " " & "000 " & Row.addrpar.ToString
        End If
        Row.addrMapPar = tmpStr
    End Sub

End Class

感谢您的帮助！

推荐答案

我发现了问题！它与数据中的NULLS有关.我没有提供数据，我只是在解析它，发现有一些我不知道的NULL.

I figured out the issue! It had to do with NULLS in the data. I didn't provide the data, I was just parsing through it and found that there were some NULLs I didn't know about.

要修复它，我使用了:

If Row.addrmap_IsNull = False and Row.addrpar_IsNull = False Then
...
End If

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