How can I search single row from gridview using vb.Net?

What specifically are you having trouble with? Grabbing the row you want? Or checking each cell in that row? What are you searching for?

To check each cell in the row, you will want to loop through the grid's columns. You can do that like this:

'In my example, I have a column in my grid called id.  I'm only grabbing rows that have a id that matches my variable strRowIdToSelect
For Each dgvr as DataGridViewRow in myDataGrid.Select("id=" & strRowIdToSelect)
   For Each dgvc as DataGridViewColumn In myDataGrid.Columns
      'The value I'm searching for is stored in a a variable called strValueToSearchFor
      If dgvr.Cells(dgvc.Index).Value = strValueToSearchFor Then
         'Found the value
         'Add code to do what you want after you've found it
      End
   Next
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