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How can I loop though columns by name in an SSIS Script component?


How can I loop though columns by name in an SSIS Script component?

By : rus
Date : November 19 2020, 03:01 PM
it helps some times Simple Workaround
You can store columns name in a List(of string) using loops , and use Row.GetType().GetProperties() to manipulate columns dynamically.
code :
Dim lstDateColumns as new List(of string)
Dim lstSystemColumns as new List(of string)

For i = 1 to 9
    lstDateColumns.Add("Diagnosis0" & i.toString() & "_Date")
    lstSystemColumns.Add("Diagnosis0" & i.toString() & "_System")
Next


For each  dataColumn as PropertyInfo in Row.GetType().GetProperties()


    If lstDateColumns.Contains(dataColumn.Name) Then

                 dataColumn.SetValue(Row, diagnosisDate, Nothing)

     ElseIf lstSystemColumns.Contains(dataColumn.Name) Then

                dataColumn.SetValue(Row, "ICD10", Nothing)

     End IF
Next
    Dim lstDateColumns As New List(Of String)
    Dim lstSystemColumns As New List(Of String)

    For i As Integer = 1 To 9
        lstDateColumns.Add("Diagnosis0" & i.ToString() & "_Date")
        lstSystemColumns.Add("Diagnosis0" & i.ToString() & "_System")
    Next

    For Each dataColumn As PropertyInfo In Row.GetType().GetProperties().Where(Function(x) lstDateColumns.Contains(x.Name))

        dataColumn.SetValue(Row, diagnosisDate, Nothing)

    Next


    For Each dataColumn As PropertyInfo In Row.GetType().GetProperties().Where(Function(x) lstSystemColumns.Contains(x.Name))

        dataColumn.SetValue(Row, "ICD10", Nothing)

    Next


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SSIS script component question - no output columns defined, but I do get output

SSIS script component question - no output columns defined, but I do get output


By : David V.
Date : March 29 2020, 07:55 AM
hop of those help? The OUTPUT Columns section is for defining columns that you are adding to the output after the script completes. In other words, if you are taking several values from the data flow in and based upon their values, calculating a new value to be output in a new column, then that would be defined in the script as an output. Otherwise, the buffer that is input into the script task is output out of the script task.
SSIS custom script: loop over columns to concatenate values

SSIS custom script: loop over columns to concatenate values


By : Kamil Kowalczyk
Date : March 29 2020, 07:55 AM
around this issue Your problem is trying to run ToString() on a NULL value from your database.
Try Convert.ToString(columnValue) instead, it just returns an empty string.
How to manage SSIS script component output columns and its properties programmatically

How to manage SSIS script component output columns and its properties programmatically


By : user2499606
Date : March 29 2020, 07:55 AM
this one helps. I totally agree with @Arthur comment, you should build the whole package programmatically. You have two approaches to create packages programatically:
(1) Build SSIS using C#
Returning Output Paramters or Variables From SSIS Script Task / Script Component

Returning Output Paramters or Variables From SSIS Script Task / Script Component


By : Сергей Кузьминых
Date : March 29 2020, 07:55 AM
To fix this issue I don't know if it is possible to return values in the script task to your calling stored procedure, but here's an alternative way I would do this and may get you your end result. Create local SSIS variables that can capture the values in your script task that are currently being shown in your message boxes. For example create one called mySSISVariable:
Looping Through Columns in SSIS Script Component

Looping Through Columns in SSIS Script Component


By : user180V
Date : March 29 2020, 07:55 AM
With these it helps Row in a script component is NOT a System.Data.DataRow but rather it is a Input0Buffer. The Input0Buffer is derived directly from your ssis package and has column names as properties.
so you can use GetType().GetProperties() to get all of the System.Reflection.PropertyInfo that are on the object and go through them to do what you want. Though you will have to do some research on how to use system reflection to actually call the property dynamically to modify the contents because I don't know that answer of the top of my head.
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