I would like to change Cell value. the Telerik Winforms RadGridView.

[arbam]

First of all, I link with Oracle db and receive datalist as object through linq.
And
> source :
> IEnumerable<object> func(){ var a = linq... return a; }
> object list = func().ToList();
> radGridView.datasource = list;
Apply it like this.

However, changing the GridView Decimal Column value in RadGridView does not apply.
The value disappears when entered...

If you add newRow, you get an error such as "RadListSource needs a parameterless Constructor for <>f__AnonymousType41`5~~~~".

What I wrote above is all I coded.
I haven't solved it for two weeks.
Please help me...

[Dess | Tech Support Engineer, Principal]

Hello, Taeheon,

According to the observed error, it seems that such a query will return a list of anonymous objects. The objects in that list are read-only and that is why you cannot edit them in the grid. In this case, I would recommend you to create a BindingList of custom objects and use this collection as a DataSource for the RadGridView.

A sample approach is demonstrated in the following help article: 

https://docs.telerik.com/devtools/winforms/controls/gridview/populating-with-data/reflecting-custom-object-changes-in-rgv 

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik