ViewData name cannot be the same as ComBoxFor id name

[Francis]

While populating a ComboBoxFor to be inside a grid, if the name of the view data variable is the same as the id, validation will be ignored.

View:

columns.ForeignKey(p => p.JobNo, (System.Collections.IEnumerable)ViewData["JobNo"], "JobNo", "JobNumber");

Controller:

public IActionResult Index()
       {ViewData["jobnumber"] = _ddservice.GetAllOrdersByOfficeIdDD(oid);
           return View();
       }

 

[Francis]

Page was submitted before I finished....
 

Controller should be this:

public IActionResult Index()
        {
            ViewData["jobno"] = _ddservice.GetAllOrdersByOfficeIdDD(oid);
            return View();
        }

 

If ViewData["JobNo"] is used, the grid makes no validation on the field. If you change the name to ViewData["jobnumber"], the validation works.

[Stefan]

Hello, Francis,

We do recommend using different names in this scenario as the ViewData should refer to a collection instead of single value as the ID field.

As the name of the ViewData collection is custom, modifying it should not cause changes to the end result.

Still, I will forward this to the developers' team for further investigation to check if we can improve this scenario.

Regards,
Stefan
Progress Telerik