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Is there a way I can trim trailing spaces in a linq query

Posted on 2013-12-18
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Last Modified: 2016-02-10
Is there a way I can trim trailing spaces in a linq query?

        query = From row In list
            Where row.Working = inputData

In the above example, row.working = "No " and inputData = "No".
I know the best fix is to not allow data into the db with trailing spaces, but for now, I need to work with the data I have.

I have tried trimend and contains and neither worked.  but maybe I am not using them correctly?  I am kind of a newbie with linq.

thank you for helping me!
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Question by:ToolTimeGang
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Expert Comment

by:13Shadow
ID: 39727982
Is your working field set as char(3) rather than varchar(3)?
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Expert Comment

by:käµfm³d 👽
ID: 39728000
Based on the code you show, I would expect:

query = From row In list
        Where row.Working.TrimEnd().ToUpper() = inputData.TrimEnd().ToUpper()

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Author Comment

by:ToolTimeGang
ID: 39729171
   Private Function queryWorking(ByRef query As IEnumerable(Of ResponseTimeDto), _
                           list As List(Of ResponseTimeDto), _
                           inputData As String) As List(Of ResponseTimeDto)
        query = From row In list
            Where row.Working.TrimEnd().ToUpper() = inputData.TrimEnd().ToUpper()
        Return query.ToList()
    End Function

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When I run this code, I get a nullreference exception on inputdata.trimend().toupper(). Object reference not set to an instance of an object.  Troubleshooting tip is to use the "new" keyword to create an object instance.
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Accepted Solution

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ToolTimeGang earned 0 total points
ID: 39729291
Ok 13shadow and kaufmed.  I think I have a fix for this:
http://stackoverflow.com/questions/4685578/how-can-i-automatically-trim-whitespace-from-my-linq-queries

I used the fix that Exoas suggested.  It works for now until I have a more permanent solution for the data.

Make sense?  I still would like to fix it in the linq query example at the beginning of this post, but I can't get it to work.
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LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39729448
When I run this code, I get a nullreference exception
You need to ensure that the strings you are trimming are not null. You might try:

query = From row In list
        Where row.Working.TrimEnd().ToUpper() = IF(inputData Is Nothing, String.Empty, inputData).TrimEnd().ToUpper()

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Author Comment

by:ToolTimeGang
ID: 39735987
That still doesn't work.  I am going to stick with Exoas suggestion for now.  Thanks for trying to help!
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LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39736069
I am going to stick with Exoas suggestion for now.
Huh?
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Author Comment

by:ToolTimeGang
ID: 39736082
ok
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Author Comment

by:ToolTimeGang
ID: 39736083
ok
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Author Comment

by:ToolTimeGang
ID: 39736086
ok
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Author Comment

by:ToolTimeGang
ID: 39736703
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Author Closing Comment

by:ToolTimeGang
ID: 39743272
Other suggestions were not working for me.  This one did work.  not the best solution, but it works.
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