title: Find and get row index in datatable
body: <h1> DataTable.Select problem </h1>
  
  <p>i have simple datatable like this</p>
  
  <pre><code>|   1  |  2   |   3  |
  |------|------|------|
  | 1966 | 6544 | 1967 | 
  | 9560 | 3339 | 4968 | 
  | 0    | 9400 | 1765 | 
  | 0    | 5479 | 6701 | 
  </code></pre>
  
  <p>for example i want to check if 1966 is already exist in column "1" and if it exist get row index
  i do code like this </p>
  
  <pre><code>Dim search() As DataRow = table.Select(" '" &amp; i &amp; "' = '" &amp; value &amp; "'   ")
    'where i is a integer from 1 to 3 and value is a biginteger
      If search.Count &gt; 0 Then
          'get row index
      Else
          Console.WriteLine("not found")
      End If
  </code></pre>