public bool UpdatePost(ref PostBDO postBDO, ref string message)
{
message = "post updated successfully";
var ret = true;
using (var BEntities = new BlogEntities())
{
var postId = postBDO.PostId;
Post postInDB = (from p in BEntities.Posts
where p.PostId == postId
select p).FirstOrDefault();
//check post
if (postInDB == null)
{
throw new Exception("No post with ID " + postBDO.PostId + " found.");
}
//update post
postInDB.PostTitle = postBDO.PostTitle;
postInDB.PostContent = postBDO.PostContent;
postInDB.RowVersion = postBDO.RowVersion;
BEntities.Posts.Attach(postInDB);
BEntities.Entry(postInDB).State = System.Data.Entity.EntityState.Modified;
var num = BEntities.SaveChanges();
postBDO.RowVersion = postInDB.RowVersion;
if (num != 1)
{
ret = false;
message = "no post is updated";
}
}
return(ret);
}
public bool CreatePost(ref PostBDO postBDO, ref string message)
{
message = "post created";
var ret = true;
using (var BEntities = new BlogEntities())
{
var maxId = 0;
var maxIdPost = BEntities.Posts.OrderByDescending(i => i.PostId).FirstOrDefault();
if (maxIdPost != null)
{
maxId = maxIdPost.PostId;
}
var postId = maxId + 1;
//var postId = postBDO.PostId;
Post postToDB = new Post
{
PostId = postBDO.PostId,
PostTitle = postBDO.PostTitle,
PostContent = postBDO.PostContent,
PostDateTime = DateTime.Now
};
BEntities.Posts.Add(postToDB);
var num = BEntities.SaveChanges();
if (num != 1)
{
ret = false;
message = "no post created";
}
}
return(ret);
}