public async Task <IActionResult> Create([Bind("username,password,sex,email,status,img,telephone,workplace,occupation,address")] UsersViewModel users)
{
///<summary>
/// 将ASP.NET Core MVC模型绑定器创建的user实体添加到users实体集，然后将更改保存到数据库
/// 模型绑定器指的是 ASP.NET Core MVC 功能，用户可利用它来轻松处理使用表单提交的数据
/// 模型绑定器将已发布的表单值转换为 CLR 类型，并将其传递给操作方法的参数
///</summary>
try
{
if (ModelState.IsValid)
{
_context.Add(users);
//实体状态：Added，SaveChanges 方法发出 INSERT 语句
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
}
catch (DbUpdateException /* ex */)
{
///Log the error (uncomment ex variable name and write a log.
/// 如果保存更改时捕获到来自 DbUpdateException 的异常，则会显示一般错误消息。 有时 DbUpdateException 异常是由应用程序外部的某些内容而非编程错误引起的，因此建议用户再次尝试
ModelState.AddModelError("", "新增用户失败" + "再次尝试，如果问题仍然存在" + "请联系系统管理者.");
}
return(View(users));
}
public async Task <IActionResult> Create([Bind("title,author,source,fb_time,wz_content,wz_style,state,userID")] Science_essayViewModel science_essayViewModel)
{
if (ModelState.IsValid)
{
_context.Add(science_essayViewModel);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
ViewData["userID"] = new SelectList(_context.users, "ID", "username", science_essayViewModel.userID);
return(View(science_essayViewModel));
}
public async Task <IActionResult> Create([Bind("ID,comment,comment_time,userID,essayID")] Forum_msgViewModel forum_msgViewModel)
{
if (ModelState.IsValid)
{
_context.Add(forum_msgViewModel);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
ViewData["essayID"] = new SelectList(_context.Science_essay, "ID", "ID", forum_msgViewModel.essayID);
//ViewData["userID"] = new SelectList(_context.users, "ID", "password", forum_msgViewModel.userID);
ViewData["userID"] = new SelectList(_context.users, "ID", "userID", forum_msgViewModel.userID);
return(View(forum_msgViewModel));
}
public async Task <IActionResult> ModifyImg(int?id, string img)
{
if (id == null)
{
return(NotFound());
}
var userToUpdate = await _context.users.FirstOrDefaultAsync(u => u.ID == id);
if (await TryUpdateModelAsync <UsersViewModel>(userToUpdate, "", u => u.img))
{
try
{
await _context.SaveChangesAsync();
return(Content("<meta http-equiv='content-type' content='text/html; charset = utf-8' /><script>history.go(-1);</script>", "text/html"));
//return RedirectToAction(nameof(Index));
}
catch (DbUpdateException /* ex */)
{
ModelState.AddModelError("", "上传图像失败" + "再次尝试，如果问题仍然存在" + "请联系系统管理者.");
}
}
//var userId = this.User.FindFirstValue(ClaimTypes.NameIdentifier);
return(View(userToUpdate));
}
public async Task <IActionResult> Register([Bind("username,password,sex,email,status,telephone,img,workplace,occupation,address")] UsersViewModel users)
{
try
{
if (ModelState.IsValid)
{
_context.Add(users);
await _context.SaveChangesAsync();
return(new ContentResult()
{
Content = "<meta http-equiv='Content-Type' content='text/html; charset = UTF-8' />" +
"<div class='content' style='text-align:center; color:#52FA4D; letter-spacing:3px;'>注册成功！</div>" +
"<script>" +
" var content = document.getElementsByClassName('content')[0];" +
" var timeLeft = 2;" +
" function tiaozhuan(timeLeft) {" +
" if (timeLeft > 0) {" +
" setTimeout(function() {" +
" timeLeft--;" +
" content.innerText = timeLeft + '后将跳转到登录页面';" +
" tiaozhuan(timeLeft);" +
" },1000); " +
" }" +
" else { window.location.href = 'Login'; }" +
" }" +
" tiaozhuan(timeLeft);" +
"</script> ",
ContentType = "text/html",
StatusCode = 200
});
}
}
catch (DbUpdateException /* ex */)
{
ModelState.AddModelError("", "注册失败" + "再次尝试，如果问题仍然存在" + "请联系系统管理者.");
}
return(RedirectToAction(nameof(TipsFailed)));
}
public async Task <IActionResult> NewForumMsg([Bind("comment,comment_time,userID,essayID")] Forum_msgViewModel forum_msgViewModel, string essayID, string comment)
{
try
{
if (ModelState.IsValid)
{
if (comment == null)
{
return(Content("<meta http-equiv='content-type' content='text/html; charset = utf-8' /><script>alert('请输入评论内容');history.go(-1);</script>", "text/html"));
}
_context.Add(forum_msgViewModel);
await _context.SaveChangesAsync();
return(Content("<meta http-equiv='content-type' content='text/html; charset = utf-8' /><script>alert('发表成功');history.go(-1);</script>", "text/html"));
}
}
catch (DbUpdateException /* ex */)
{
ModelState.AddModelError("", "发布信息失败" + "再次尝试，如果问题仍然存在" + "请联系系统管理者.");
}
return(View(forum_msgViewModel));
}