Error Entity Framework | not handled in user code

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Error Entity Framework | not handled in user code

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#1 by (5 votes)

1

Hello, I need help in the following scenario.

I have a class, where the field is int64 in the backend and in SQL Server the field is bigint.

ObjClasse.VariavelInteira = numInt;
db.SaveChanges();

When saving, the error it presents is:

An exception of type 'System.Data.Entity.Validation.DbEntityValidationException' occurred in EntityFramework.dll but was not handled in user code

How can I identify the error?

entity-framework

asked by anonymous 10.01.2017 / 19:41

1 answer

Save div into a cookie "NOT IN" behavior affecting column display with NULL value

score 5 · Accepted Answer

This is a generic error saying that some validation failed. To capture the specific error, you can do the following

try
{
    Classe.VariavelInteira = numInt;
    db.SaveChanges();
}
catch (DbEntityValidationException ex)
{    
    var errorMessages = ex.EntityValidationErrors
            .SelectMany(x => x.ValidationErrors)
            .Select(x => x.ErrorMessage);

    var fullErrorMessage = string.Join("; ", errorMessages);         
    var exceptionMessage = string.Concat(ex.Message, " The validation errors are: ", fullErrorMessage);

    //Use a variável exceptionMessage para ver os erros de validação
}

If after that, you still need help, edit your question with the errors returned.