Dynamic forms for business process tasks: sum of block items

You can find examples of scripts for blocks in the "Working with blocks in scripts" article.

To calculate the total sum of a block's items you can use a typical change script linked to the block's variable. Such a script will be executed when a new item is added or an existing item is changed.

public void sum_items(Context context, EleWise.ELMA.Model.Views.FormViewBuilder<Context> form)
{
    context.listsum = 0;
     
    foreach (var item in context.productlist)
    {
        context.listsum+= item.price;
    }
}