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3つのエラーが発生しています

ジェネリック型 'RoleManager' TRole,TKey を使用するには、2 つの型引数が必要です

asp.net mvc 5 WebアプリケーションのCreateメソッドの次の行

ViewBag.RoleId = new SelectList(await RoleManager.Roles.ToListAsync("Name", "Name"));  

ViewBag.RoleId = new SelectList(RoleManager.Roles, "Name", "Name");

これを修正する方法

ここに create メソッド全体があります: 

    // POST: /Account/Register
    [HttpPost]
    [AllowAnonymous]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> Register(RegisterViewModel model, HttpPostedFileBase upload, params string[] selectedRoles)
    {

    try
    {
        if (ModelState.IsValid)
        {
            var user = new ApplicationUser { UserName = model.UserName, Email = model.Email };                      


            var result = await UserManager.CreateAsync(user, model.Password);

            if (result.Succeeded)
            {
                //Add User to the selected Roles 
                if (selectedRoles != null)
                {
                    var addroles = await UserManager.AddToRolesAsync(user.Id, selectedRoles);
                    if (!addroles.Succeeded)
                    {
                        ModelState.AddModelError("", result.Errors.First());
                        ViewBag.RoleId = new SelectList(await RoleManager.Roles.ToListAsync("Name", "Name"));
                        return View();
                    }
                }

            }

            else
            {
                ModelState.AddModelError("", result.Errors.First());
                ViewBag.RoleId = new SelectList(RoleManager.Roles, "Name", "Name");
                return View();
            }

            return RedirectToAction("Index");
            // AddErrors(result);
        }

    }

    // If we got this far, something failed, redisplay form
    catch (RetryLimitExceededException /* dex */)
    {
        //Log the error (uncomment dex variable name and add a line here to write a log.
        ModelState.AddModelError("", "Unable to save changes. Try again, and if the problem persists see your system administrator.");
    }

    ViewBag.RoleId = new SelectList(RoleManager.Roles, "Name", "Name");

    return View(model);
}
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1 に答える 1

1

基本的には、使用時に2つのタイプを指定する必要があることを意味しますRoleManager

RoleManager<string,string> //example

これは、使用方法に似ていますDictionary

Dictionary dict = new Dictionary(); //invalid
Dictionary<string,string> dict = new Dictionary<string,string>(); //valid
于 2016-03-04T07:07:29.833 に答える