// for testing
public void addSome(string content)
{
BBSItem bi = new BBSItem();
bi.ParentID = -1;
bi.BBS = (from b in CQGJ.BBS where b.BBSID == 1 select b).First();
bi.TypeID = 0;
bi.Content = content;
CQGJ.AddToBBSItem(bi);
CQGJ.SaveChanges();
}
/// <summary>
/// 创建一个新的BBS Item
/// </summary>
/// <param name="subject">subject of Item</param>
/// <param name="content">content of Item</param>
/// <param name="parentId">parent id of Item</param>
/// <param name="status">status of Item</param>
/// <param name="typeId">type id of Item</param>
/// <param name="userId">user id of Item</param>
/// <param name="userName">user name of Item</param>
/// <param name="bbsId">id of Item belonged bbs</param>
/// <param name="attachmentId">attachment id of Item</param>
public ActionResult CreateItem(string subject, string content, int parentId, int status,
int typeId, int userId, string userName, int bbsId, int attachmentId)
{
BBSItem newBBSItem = new BBSItem();
// 因为是新帖,无论是发起帖,还是回帖,都没有LastReplyTime,所以设为null
newBBSItem.LastReplyTime = null;
newBBSItem.ParentID = parentId;
newBBSItem.ReplyCount = 0;
newBBSItem.Status = status;
newBBSItem.Subject = subject;
newBBSItem.Content = content;
newBBSItem.SubmitTime = DateTime.Now;
newBBSItem.TypeID = typeId;
newBBSItem.UserName = userName;
newBBSItem.ViewCount = 0;
try
{
// 因为BBSItem表中BBSID和外键是以BBS对象保存的,
// 所以要为BBSItem构造整个BBS对象才能在数据库中保存BBSItem?
//BBSItem.BBS.BBSID = Request.Form["bbsid"];错误?
newBBSItem.BBS = (from b in CQGJ.BBS where b.BBSID == bbsId select b).First();
// 需要对 newBBSItem.User 实例化，否则会报错
newBBSItem.User = (from u in CQGJ.User where u.UserID == userId select u).First();
}
catch (ArgumentNullException)
{
Response.Write("该BBS论坛已经被删除");
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
// 需要对 newBBSItem.Attachment 实例化，否则会报错
//newBBSItem.Attachment = (from attachment in CQGJ.Attachment where attachment.AttachmentID == attachmentId select attachment).First();
CQGJ.AddToBBSItem(newBBSItem);
CQGJ.SaveChanges();
return null;
}
/// <summary>
/// 显示上一个帖子
/// </summary>
/// <param name="id">本帖ID</param>
public ActionResult PreItem(int id)
{
BBSItemListViewData BBSLVD = new BBSItemListViewData();
int bbsId = GetCurrentBBSID();
try
{
List<BBSItem> items = (from bi in CQGJ.BBSItem where bi.ParentID == -1 && bi.BBS.BBSID == bbsId select bi).ToList();
BBSItem nextItem = new BBSItem();
for (int i = 0; i < items.Count; i++)
{
if (items[i].ItemID == id)
{
if (i != 0)
{
nextItem = items[i - 1];
break;
}
else
{
nextItem = items[i];
break;
}
}
}
BBSLVD = GetItemDetailInfoByID(nextItem.ItemID);
}
catch (Exception ex)
{
Response.Write("这是第一个帖子" + ex.Message);
}
return RedirectToAction("item/" + BBSLVD.TopicItemInfo.TopicBBSItem.ItemID + "/1");
}
/// <summary>
/// 发起一个新的BBS话题
/// </summary>
public ActionResult CreateTopicItem()
{
BBSItem BBSItem = new BBSItem();
User user = GetUser();
string subject = GetString("subject");
string content = GetString("BBSItemContent");
// 发起帖parentId为-1
int parentId = -1;
//status为备用字段,暂时设置为0
int status = 0;
//TypeID暂时设置为0
int typeId = 0;
// 取得登陆用户ID,userId
int userId = user.UserID;
// 取得用户姓名
string userName = user.Username;
int bbsId = GetInt("bbsid");
// 取得上传附件组的ID, 1表示没有附件
int attachmentId = 1;
// 保存文件的路径
string strAbsolutePath = this.HttpContext.Request.MapPath(@"../Content/UploadFiles/BBSFiles/");
// 上传附件, 并获取附件组的ID
try
{
// 获取上传附件组
HttpFileCollectionBase uploadFiles = this.HttpContext.Request.Files;
// 创建一个附件组
Attachment at = new Attachment();
if (uploadFiles.Count > 1)
{
// ?好像数据库中存在数据的情况下才可以使用orderby语句, 否则会报错
// 所以需要对Attachment数据库初使化
attachmentId = (from attachment in CQGJ.Attachment orderby attachment.AttachmentID descending select attachment.AttachmentID).First() + 1;
at.AttachmentID = attachmentId;
// 在数据库中加一个附件组信息
CQGJ.AddToAttachment(at);
}
at.TypeID = 0; // 暂时设为0
// 获取新建的附件组的ID
//attachmentId = at.AttachmentID;
for (int j = 1; j < uploadFiles.Count; j++)
{
// 创建一个附件
AttachmentItem ai = new AttachmentItem();
ai.AddTime = DateTime.Now;
ai.Status = 0; // 暂时设置为0
ai.UserID = userId;
ai.TotalSize = uploadFiles[j].ContentLength;
ai.Attachment = at;
// 上传的文件是用原名呢，还是生成一个名字呢？
//ai.FileName = uploadFiles[j].FileName;
ai.FileName = FileUpload.SaveFile(uploadFiles[j], strAbsolutePath);
// 在数据库中加一个附件信息
CQGJ.AddToAttachmentItem(ai);
CQGJ.SaveChanges();
}
}
catch (HttpException)
{
// 网络异常
}
catch (InvalidOperationException)
{
Response.Write("错误操作!");
}
CreateItem(subject, content, parentId, status, typeId, userId, userName, bbsId, attachmentId);
// count 为数据库中发帖总数
int count = (from bi in CQGJ.BBSItem where bi.ParentID == -1 && bi.BBS.BBSID == bbsId select bi).Count();
// page 为当前发帖的页码
int page = count / 10;
if (count % 10 != 0)
{
page = count / 10 + 1;
}
// 返回BBS列表页面
return RedirectToAction("ListBBSItems/" + bbsId + "/" + page);
}
/// <summary>
/// 创建一个回帖的BBS Item
/// </summary>
public ActionResult CreateReplyItem()
{
BBSItem BBSItem = new BBSItem();
// 获取登陆用户信息
User user = GetUser();
string subject = GetString("subject");
string content = GetString("replyContent");
int parentId = GetInt("parentid");
//status为备用字段,暂时设置为0
int status = 0;
//TypeID暂时设置为0
int typeId = 0;
// 取得登陆用户ID,userId
int userId = user.UserID;
// 取得用户姓名
string userName = user.Username;
int bbsId = GetInt("bbsid");
// 取得上传附件组的ID,1表示没有附件
int attachmentId = 1;
CreateItem(subject, content, parentId, status, typeId, userId, userName, bbsId, attachmentId);
BBSItem topic = null;
try
{
// 回复次数加1
topic = (from topic1 in CQGJ.BBSItem where topic1.ItemID == parentId select topic1).First();
topic.ReplyCount = topic.ReplyCount + 1;
CQGJ.SaveChanges();
}
catch (ArgumentNullException)
{
Response.Write("该帖子已被删除!");
}
if (topic == null)
{
// 如果被回复的帖子为null,即帖子被删除,返回BBSItem列表
return RedirectToAction("ListBBSItems/" + bbsId + "/1");
}
else
{
// 回复成功,跳转至BBSItem详细信息页面
return RedirectToAction("Item/" + topic.ItemID + "/1");
}
}