public IHttpActionResult PostNews_news(News_news news_news)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
db.News_news.Add(news_news);
try
{
db.SaveChanges();
}
catch (DbUpdateException)
{
if (News_newsExists(news_news.NewsID))
{
return(Conflict());
}
else
{
throw;
}
}
return(CreatedAtRoute("DefaultApi", new { id = news_news.NewsID }, news_news));
}
public IHttpActionResult GetNews_news(Guid id)
{
News_news news_news = db.News_news.Find(id);
if (news_news == null)
{
return(NotFound());
}
return(Ok(news_news));
}
public IHttpActionResult DeleteNews_news(Guid id)
{
News_news news_news = db.News_news.Find(id);
if (news_news == null)
{
return(NotFound());
}
db.News_news.Remove(news_news);
db.SaveChanges();
return(Ok(news_news));
}
public IHttpActionResult PutNews_news(Guid id, News_news news_news)
{
News_news Nn = db.Set <News_news>().AsNoTracking().FirstOrDefault(u => u.NewsID == id);
//如果该ID在数据库没有数据的话则进行新增操作
if (Nn == null)
{
db.News_news.Add(news_news);
db.SaveChanges();
return(Ok());
}
//如果该ID在数据库有数据的话则进行保存操作
else
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != news_news.NewsID)
{
return(BadRequest());
}
db.Entry(news_news).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!News_newsExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
}
