Calculated Column refresh

[Dirk Liebich]

All,

I have a calculated column in my grid. It works pretty fine but once I change one of the correspondig fields (Qt1...Qty18) the Total column doesn't update automatically. Is it supposed to calculate only once upon loading the grid or can I somehow accomplish to calculate on the fly once a depended column changes?

Thanks,
Lars

...
<telerik:GridViewExpressionColumn
                        Header="Total"
                        UniqueName="Total"
                        DataFormatString="{}{0:#,##0}"
                        />
...

In the constructor of the code behind I have the following lines:

    Expression<Func<ForecastInputItemViewModel, double>> expression = prod => prod.Qty1 + prod.Qty2 + prod.Qty3 + prod.Qty4 + prod.Qty5 + prod.Qty6 + prod.Qty7 + prod.Qty8 + prod.Qty9 + prod.Qty10 + prod.Qty11 + prod.Qty12 + prod.Qty13 + prod.Qty14 + prod.Qty15 + prod.Qty16 + prod.Qty17 + prod.Qty18;
            GridViewExpressionColumn column = ForecastGrid.Columns["Total"] as GridViewExpressionColumn;
            column.Expression = expression;

[Dimitrina]

Hi Dirk Liebich,

 Generally the GridViewExpressionColumn cells listen to the PropertyChanged event of the row's data item in order to update themselves. Your business object should raise PropertyChanged  whenever a property of the object has changed.

Please take a look at this online demo

I hope that this will help you. 

All the best,
Didie
the Telerik team