如何将复杂对象发送到 Razor 页面

Question

我正在开发 ASP.NET Core 6.0 Identity 项目。我想将

ApplicationUser

对象从

LoginWith2fs.cshtml

页面传递到

Login.cshtml

页面。

这是我的代码 - 登录页面：

return RedirectToPage("./LoginWith2fa", new 
                                        { 
                                            UserSent = user, 
                                            ReturnUrl = returnUrl, 
                                            RememberMe = Input.RememberMe 
                                        });

代码在

LoginWith2fa

页面：

// Created this property in the LoginWith2fa page. Not sure this is needed or not
public ApplicationUser UserSent { get; set; }

public async Task<IActionResult> OnGetAsync(ApplicationUser UserSent, bool rememberMe, string returnUrl = null)
{
    // More code here
    // the  ApplicationUser object has null values in its properties such as username and email
    // However the rememberMe and returnUrl variables have correct values
}

Answer 1

您可以临时存储ApplicationUser对象，例如TempData，然后在LoginWith2fa页面中检索它。 检查以下内容：

// Store the ApplicationUser object in TempData
TempData["UserSent"] = user;

return RedirectToPage("./LoginWith2fa", new { returnUrl = returnUrl, rememberMe = Input.RememberMe });

LoginWith2fa页面中的代码：

using Microsoft.AspNetCore.Http;
using Newtonsoft.Json;

public async Task<IActionResult> OnGetAsync(bool rememberMe, string returnUrl = null)
{
    // Retrieve the ApplicationUser object from TempData
    if (TempData.ContainsKey("UserSent"))
    {
        var userData = TempData["UserSent"].ToString();
        var userSent = JsonConvert.DeserializeObject<ApplicationUser>(userData);
    }
}