title: How to access the values of the cells of calculated columns in RadGridView
body: <p>Is there a way to get the values for calculated columns in RadGridView?</p>
  
  <p>I have a part in my code where I iterated through all the items that are shown in a RadGridView. The values for calculated columns are not there. I wonder how I can get them.</p>
  
  <p>Right now I'm iterating the collection of items that the grid is bound to. I'm using GridViewExpressionColumn to add this calculated columns to the grid.</p>
  
  <p>EDIT:</p>
  
  <pre><code>   GridViewColumn column = new GridViewExpressionColumn
                      {
                          UniqueName = columnViewModel.LayoutColumnId.ToString(),
                          Name = name,
                          Expression = expression,
                          IsReadOnly = isReadOnly,
                          ToolTipTemplate = CreateTooltip(columnViewModel.FormulaText),
                          IsSortable = false,
                          IsFilterable = false
                      };
  
      grid.Columns.Add(column)
  </code></pre>