Hello,

I typically do this by first setting the grid to allow update:
ultraGrid1.DisplayLayout.Override.AllowUpdate = DefaultableBoolean.True

And then controlling the allow update on each column, you would do this in the InitializeLayout event.

foreach (var column in initializeLayoutEventArgs.Layout.Bands[0].Columns)
{
    if (column.Key == "CheckBoxColumn")
    {
      column.CellActivation = Activation.AllowEdit;
      column.CellClickAction = CellClickAction.EditAndSelectText;
   }
   else
   {
      column.CellActivation = Activation.NoEdit;
      column.CellClickAction = CellClickAction.Default;
   }
}

HOWTO:How can I make a grid or a column, row, or cell in the UltraWinGrid disabled or read-only?