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VB.Net Build string based on DataGridView values from a single column


I have this problem generating a string based on all the values from a DataGridView column.

Ex. If in my grid, i have:

I would like to generate a string that will be puted into my txEquipmentCompatibilityString.Text as below:


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The problem i have is that i only get ('010') with the below code:

'Build String
        Dim s As String

        For n = 0 To dgvLoadCommodities.RowCount - 1

            If String.IsNullOrEmpty(dgvLoadCommodities.Rows(n).Cells(0).Value) Then
                s = "'" + dgvLoadCommodities.Rows(n).Cells(0).Value.ToString.Replace("'", "''") + "'"
            End If

        txEquipmentCompatibilityString.Text = "" & "(" + " '" + dgvLoadCommodities.Rows(0).Cells(0).Value.ToString.Replace("'", "''") + "')"

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How can i fix that.

Thanks again for your help.

Visual Basic.NET

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Last Comment

8/22/2022 - Mon
Éric Moreau

you have a couple of issues:
1. on line 8, you always overwrite the content of s, you never append to it
2. you don't use the value of s outside your loop
3. on line 12, you specifically display rows 0 content

give a try to :
'Build String         
Dim s As String = string.empty 
For n = 0 To dgvLoadCommodities.RowCount - 1             
   If not String.IsNullOrwhitespace(dgvLoadCommodities.Rows(n).Cells(0).Value) Then            
      if not string.isnullorwhitespace(s) then s &= ","
      s &= "'" + dgvLoadCommodities.Rows(n).Cells(0).Value.ToString.Replace("'", "''") + "'"             
   End If         
txEquipmentCompatibilityString.Text = "" & "(" + " '" + s.Replace("'", "''") + "')"

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Hi Éric
With this code, i have a problem. I'm getting double quotes and triple quotes in the string:
( '''010'',''014'',''015'',''038''')

Instead of
( '010','014','015','038')
Éric Moreau

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Thank you so much. This is what i was looking for.
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