Validation failed for one or more entities. See 'EntityValidationErrors' property for more details. Code First

Question

I get this error:

Validation failed for one or more entities. See \'EntityValidationErrors\' property for more details.

when i try to updat

Answer 1

You can pass it up the exception stack like below.

try
{
    _dbContext.SaveChanges();
}
catch (DbEntityValidationException dbValEx)
{
   var outputLines = new StringBuilder();
   foreach (var eve in dbValEx.EntityValidationErrors)
   {
     outputLines.AppendFormat("{0}: Entity of type \"{1}\" in state \"{2}\" has the following validation errors:"
       ,DateTime.Now, eve.Entry.Entity.GetType().Name, eve.Entry.State);

     foreach (var ve in eve.ValidationErrors)
     {
       outputLines.AppendFormat("- Property: \"{0}\", Error: \"{1}\""
        ,ve.PropertyName, ve.ErrorMessage);
     }
   }

 throw new DbEntityValidationException(string.Format("Validation errors\r\n{0}"
  ,outputLines.ToString()), dbValEx);
}