asp.net – localhost页面无效. localhost重定向了你太多次了

localhost重定向了你太多次了.“

但没有显示具体的错误位置.

这是我的UserActivtyController,GET / UserActivity / Index代码：

public class UserActivityController : BaseController
{
    //GET /UserActivity/Index
    public ActionResult Index(string returnUrl,int page = 1,string sort = "Id",string sortDir = "ASC",string filter = null)
    {
        String query = @"
            SELECT Id,CreatedBy,CreatedOn,ModifiedBy,ModifiedOn,ContactId,EntityName,EntityId,ActivityType,ActivityStatus,DueDate,ActualEndDate,MasqueradeOn,MasqueradeBy 
        FROM UserActivity 
        -- ORDER BY CreatedOn DESC
        -- OFFSET (@PageNumber -1) * 30 ROWS
        -- FETCH NEXT 30 ROWS ONLY
            ";

        //string countQuery = @""

        List<UserActivityModels> userActivity = null;

        using (IDbConnection db = new MySqlConnection(ConfigurationManager.ConnectionStrings["CRMPORTALSQLCONN"].ConnectionString))
        {
            userActivity = (List<UserActivityModels>)db.Query<UserActivityModels>(query,new
            {
                @PageNumber = page,});

            /*ViewData["TotalCount"] = (int)db.ExecuteScalar(countQuery,@Id = string.IsNullOrEmpty(filter) ? null : filter
            });
            */

            ViewData["PageSize"] = 30;
            ViewData["Filter"] = filter;
        }

        if (userActivity != null)
        {
            return RedirectToAction(returnUrl);
        }

        return View(userActivity);
    }
}

如果有人知道这个问题,真的很感激.谢谢