private static void TestValidationProperty()
{
using (var context = new InstituteEntities())
{
//create entity
var student = context.Students.Create();
student.StudentLastName = "Siddiqui";
student.GradePointAverage = 5;
var department = context.Departments.Create();
department.DepartmentName = "Electrical Engineering";
//add it to context
context.Students.Add(student);
context.Departments.Add(department);
//validate entity
ICollection <DbValidationError> validationErrors =
context.Entry <Student>(student)
.Property <string>(s => s.StudentLastName)
.GetValidationErrors();
string errorMessage =
DbEntityValidationMessageParser.GetErrorMessage(validationErrors);
//Print Message
Console.WriteLine(errorMessage);
}
}
public IHttpActionResult PutStudent(int id, Student student)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != student.Id)
{
return(BadRequest());
}
db.Entry(student).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!StudentExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
private static void TestValidationEntity()
{
using (var context = new InstituteEntities())
{
//create entity
var student = context.Students.Create();
student.GradePointAverage = 2;
student.IsOutStanding = true;
var department = context.Departments.Create();
department.DepartmentName = "Electrical Engineering";
//add it to context
context.Students.Add(student);
context.Departments.Add(department);
//validate only student entity
DbEntityValidationResult validationResult =
context.Entry <Student>(student).GetValidationResult();
string errorMessage =
DbEntityValidationMessageParser.GetErrorMessage(validationResult);
//Print Message
Console.WriteLine(errorMessage);
}
}
