title: Dev Express XtraGrid Checkbox
body: <p>I have a problem with a checkedit in DevExpress XtraGrid control.</p>
  
  <p>I've created unbound column in code (not via wizard), and that checkbox can not be checked by mouse.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>Private Sub DataViewFrm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
  
      Dim data As New DataTable
      data=getDataTable("select....")
  
      gridViewer.DataSource = data
  
      Dim Tick As New RepositoryItemCheckEdit()
  
      gridViewer.Refresh()
  
      Dim unbColumn As GridColumn = gridvwViewer.Columns.AddField("Coba")
      unbColumn.VisibleIndex = gridvwViewer.Columns.Count
      unbColumn.UnboundType = DevExpress.Data.UnboundColumnType.Boolean
      unbColumn.OptionsColumn.AllowEdit = True
      unbColumn.OptionsColumn.ReadOnly = False
  
      gridvwViewer.Columns(8).ColumnEdit = Tick     
  End Sub
  </code></pre>
  
  <p>Here is the result: <img src="https://i.stack.imgur.com/zGdh3.jpg" alt="screenshot"></p>