title: Replace value in DataColumn
body: <p>How to replace column value when looping rows?</p>
  
  <p>My DataTable has two columns, I want to replace the value of the first column on every row.
  I'm unable to get or set column value. So far I only manege to access DefaultValue and ColumnName etc. </p>
  
  <p>Even if creating new DataColumn(), I'm not able to set its value.</p>
  
  <p>Feels like I'm missing some fundamental stuff here...</p>
  
  <pre><code>        foreach (var row in dataTable.Rows)
          {
              foreach (DataColumn column in dataTable.Columns)
              {
                  // column Unable to get or set value
              }
  
          }
  </code></pre>
  
  <p>Running .NET Framework 3.5, should I use linq?</p>