

 
    
     
    
    You loop throught the selecting rows and the you get the value of the row's value.
Also, you will need to enable the option "MultiSelect".
In this code there are 2 ways to select the cell, with fieldname or with column_id.
     For Each rowHandle As Integer In GridView1.GetSelectedRows
        'Dim valueOption1 As String = gridView1.GetRowCellValue(selectedRowHandles(rowHandle), "FieldName")  
'Dim valueOption2 As String = gridView1.GetRowCellValue(selectedRowHandles(rowHandle), GridView1.Columns(column_id))
    Next  
