Validation failed for one or more entities. See 'EntityValidationErrors' property for more details [duplicate]

Answer 1

Was also struggling with this error and based on the topic here and this answer was able to figure out snippet to copy/paste without the need to figure out what has to be imported (excellent for C# beginners), code below:

try
{
  context.SaveChanges();
}
catch (System.Data.Entity.Validation.DbEntityValidationException ex)
{
  foreach (var entityValidationErrors in ex.EntityValidationErrors)
  {
    foreach (var validationError in entityValidationErrors.ValidationErrors)
    {
      System.Diagnostics.Debug.WriteLine("Property: " + validationError.PropertyName + " Error: " + validationError.ErrorMessage);
    }
  }
}