title: Remove duplicate entries and merge all column data in Datatable
body: <p>I have Data in datatable like this.</p>
  
  <pre><code>id    antena  size  width  kpi1value kpi2value kpi3value erlvalue mbvalue kpi4value   
  ab1     22     33    40      20                            22          
  ab2     33     45    50      30                            30
  ab3     11     40    60      20                            33
  ab1     22     33    40                 55                           25
  ab2     33     45    50                 30                           22
  ab3     11     40    60                 20                           90
  ab1     22     33    40                            40
  ab2     33     45    50                            50
  ab3     11     40    60                            20
  ab1     22     33    40                                                         45
  ab2     33     45    50                                                         55
  ab3     11     40    60                                                         20
  </code></pre>
  
  <p>now, i have to arrange these data with common id. Like this</p>
  
  <pre><code> id    antena  size  width  kpi1value kpi2value kpi3value erlvalue mbvalue kpi4value   
  ab1     22     33    40      20         55        40         22        25    45
  ab2     33     45    50      30         30        50         30        22    55
  ab3     11     40    60      20         20        20         33        90    20
  </code></pre>
  
  <p>I tried to use the DefaultView for removing duplicates.</p>
  
  <pre><code>dt = dt.DefaultView.ToTable(true)
  </code></pre>
  
  <p>But, with this i was getting all the columns.</p>
  
  <p>so, how can i arrange these data in datatable ?</p>