Help with partial string search

I am using the code below to select rows in a Grid where values of SDeactivation is found agains SDéactivation_ID which is in Coumn(2). SDeactivation_ID contains single values.

When SDeactivation is a single value all is working of but when SDeactivation includes multiple values (i.e. 1,2,3) it does not work. How do i modify the code to select rows when using multiple values for SDeactivation?

MsgBox("keySDeactivation)" & keySDeactivation)
        '  keySDeactivation = "1,2" does not works
        '  keySDeactivation = "1" works
        If keySDeactivation <> "" Then
            Dim _tableA As DataView = dtMasterA.DefaultView
                  C1SDeactivation.DataSource = _tableA
                    For i As Integer = 0 To C1SDeactivation.RowCount - 1
                If C1SDeactivation.Columns(2).CellValue(i).ToString().Contains(keySDeactivation) = True Then
                    C1SDeactivation.SelectedRows.Add(i)
                End If
            Next
        End If


Thanks,

Victor
vcharlesAsked:
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mbizupConnect With a Mentor Commented:
So your cell value contains a single value such as 1 or 2...

in other words, you can have
               C1SDeactivation.Columns(2).CellValue(i) =1
or           C1SDeactivation.Columns(2).CellValue(i) = 2
etc...

And you are comparing that to keySDeactivation where you can have
             keySDeactivation = 1
             keySDeactivation = 2
             keySDeactivation = "1,2"
etc..

Am I understanding that correctly?

<< If C1SDeactivation.Columns(2).CellValue(i).ToString().Contains(keySDeactivation) = True Then>>

If so, I think your Contains statement is backwards.

Try rewriting it like this:

                If keySDeactivation.Contains(C1SDeactivation.Columns(2).CellValue(i).ToString()) = True Then

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CodeCruiserCommented:
To make sure that 1 does not match with 11 using Contains function, I would add commas at start and end of the keySDeactivation and do following comparison

Outside loop:
keySDeactivation = "," & keySDeactivation & ","


Inside Loop:
If keySDeactivation.Contains("," & C1SDeactivation.Columns(2).CellValue(i).ToString() & ",") = True Then
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käµfm³d 👽Commented:
You could use regular expressions:

Imports System.Text.RegularExpressions

...

If Regex.IsMatch(C1SDeactivation.Columns(2).CellValue(i).ToString(), "\b" + keySDeactivation + "\b") Then
    C1SDeactivation.SelectedRows.Add(i)
End If

...

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vcharlesAuthor Commented:
Thank You for all the comments. This thread was the solution.
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CodeCruiserCommented:
You are sure you wont have numbers greater than 9 in there?
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vcharlesAuthor Commented:
Yes, that is ok, those are just values of the ID fields I will use to select the rows.

Thanks.

Victor
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CodeCruiserCommented:
And you will never have an ID greater than 9(such as 10, 11 etc).  The reason I ask is that using the contains method as you are, 1 will match if there is 11 but no 1. So if you are trying to select just 11, both 1 and 11 will get selected.
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