Question : Linq to DataTable and getting Distinct rows

The following Linq query is not returning distinct rows

Dim odt As DataTable = CType(Session("GridData"), DataTable)
'Contains Email addresses (and other data columns) the column name is 'Email'
'[email protected]'
'[email protected]'
'[email protected]'
'[email protected]'

'Define linq query
Dim lQuery = From c In odt.AsEnumerable() _
Where c!Email IsNot DBNull.Value _
Order By c!Email Ascending _
Select New With {.Email = c.Field(Of String)("Email")}

'Populate Chkboxlist
chklRecipients.DataSource = lQuery.Distinct()
chklRecipients.DataBind()

This is not removing duplicate row '[email protected]' because it is doing a binary compare and not a string compare. What do I need to do to stop these duplicates and the simpler the better?

Answer : Linq to DataTable and getting Distinct rows

I adjusted your query

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Dim x As New DataTable()
        Dim col1 As New DataColumn("email")

        x.Columns.Add(col1)

        x.Rows.Add("[email protected]")
        x.Rows.Add("[email protected]")
        x.Rows.Add("[email protected]")
        x.Rows.Add("[email protected]")



        Dim query = (From q In (From c In odt.AsEnumerable() _
                                Where c!Email IsNot DBNull.Value _
                                Order By c!Email Ascending _
                                Select New With {.mail = c("Email")}) _
                     Select q.mail Distinct)