IsSetData in gridcontrol is never true when clicking on checkEdit item

I have this DevExpress GridControl which I've added with two coloums the one containing a repositoryItemCheckEdit and the other normal string Category description.

Now I've made the repositoryItemCheckEdit a unbound bool in the property section and added the gridView1_CustomUnboundColumnData event which fires with e.IsGetData true but the the e.IsSetData is never true when I click on the check box. Can anyone explain why this is? Thanks

private void gridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e)
{
  if (e.IsGetData)
  {
    string itemKey = ((CategoryTable)(gridControl1.ViewCollection[0]).GetRow(e.RowHandle)).Category;
    if (AddressDoc == itemKey) e.Value = true
    else e.Value = false;
  }

  if (e.IsSetData)
    Address开发者_如何转开发Doc = ((CategoryTable)(gridControl1.ViewCollection[0]).GetRow(e.RowHandle)).Category;
}

Please try the solution from the How to save the value of an in-place check box as soon as it is changed knowledge base article published on our web site. It should help you resolve this problem. Also, I have reviewed your code and it does not look to be safe. I would change it as follows:

private void gridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e) {
            GridView gridView = sender as GridView;
            DataView dv = gridView.DataSource;
            object c = DataView[e.ListSourceRowIndex]["Category"];
            string itemKey = c == null ? "" : c.ToString();
            if (e.IsGetData) {
                if(AddressDoc == itemKey)
                    e.Value = true;
                else 
                    e.Value = false;
            }
            if(e.IsSetData)
                AddressDoc = itemKey;
        }

I can only think that you did not properly adjusted the unbound column. NOTE: a column should meet two mandatory conditions to be unbound: 1) it's FieldName should be set to a unique value among fieldName properties of other GridView columns; 2) the column's UnboundType should be set to the non Bound value.