Nullable Conversion Exception - Add Column Name

[Weetch_Russell (Russell Weetch)]

When an exception such as 'Cannot convert SNull into string' is raised, can the name of the field it relates to be included in the message.

[wlandgraf (Wagner Landgraf)]

@Weetch_Russell

can the name of the field it relates to be included in the message

It depends.
In which situation, exactly, are you receiving such message? Do you have a call stack?

[Julio_R_Ferrari (Julio Ferrari)]

@wlandgraf

In which situation, exactly, are you receiving such message? Do you have a call stack?

@wlandgraf , I'm getting this same error with a TDateTime field. It's not required. At the database it's not a "not null" column.

In my program I'm trying to set it to null using: MyEntity.MyDate.Value := Myentity.MyDate.Empty;

    [Column('MyDateTime', [])]
    FMyDateTime: Nullable<TDateTime>;
    ...
    property MyDateTime: Nullable<TDateTime> read FMyDateTime write FMyDateTime;

Call stack:

[Julio_R_Ferrari (Julio Ferrari)]

Solved.
Instead of MyEntity.MyDate.Value := Myentity.MyDate.Empty;
I used: MyEntity.MyDate := Myentity.MyDate.Empty;