Question

我正在做asp.net MVC我想显示我的索引，但是我在调用方法时遇到了问题。

有人能说出我做错了什么吗？

这是我的索引控制器：

    public ActionResult Index(int pageNumber, int pageSize, string filter, string sortColumn, string sortOrder, out int totalCount)
    {
       List<UserActivityModels> userActivity = null;

        totalCount = 0;

        string sqlWhere = string.Empty;

        sqlWhere = string.IsNullOrEmpty(filter) ? sqlWhere :
            sqlWhere + "AND (ContactId LIKE @filter)";

        string sqlOrderBy = "ORDER BY" + sortColumn + "" + sortOrder;

        String sqlSelect = @"
           SELECT Id
            ,CreatedBy
            ,CreatedOn
            ,ModifiedBy
            ,ModifiedOn
            ,ContactId
            ,EntityName
            ,EntityId
            ,ActivityType
            ,ActivityStatus
            ,DueDate
            ,ActualEndDate
            ,MasqueradeOn
            ,MasqueradeBy 
        FROM UserActivity 
        #WHERE
        #ORDERBY
        LIMIT @PageSize OFFSET @PageNumber
        ";

        string sqlCount = @"
        SELECT COUNT(Id) TotalCount 
        FROM UserActivity
        #WHERE
              ";
        sqlCount = sqlCount.Replace("#WHERE", sqlWhere);
        sqlSelect = sqlSelect.Replace("#WHERE", sqlWhere);
        sqlSelect = sqlSelect.Replace("#ORDERBY", sqlOrderBy);

        try
        {
            using (IDbConnection db = new MySqlConnection(ConfigurationManager.ConnectionStrings["CRMPORTALSQLCONN"].ConnectionString))
            {
                userActivity = (List<UserActivityModels>)db.Query<UserActivityModels>(sqlSelect, new
                {
                    @filter = "%" + filter + "%",
                    @PageSize = pageSize,
                    @PageNumber = (pageNumber - 1) * pageSize
                });

                totalCount = (int)db.ExecuteScalar<int>(sqlCount, new
                {
                    @filter = filter
                });
            }
        }
        catch (Exception ex)
        {
            throw new Exception("Unable to retrieve data from DB.", ex);
        }

        return View(userActivity);

               }

    //POST: /UserActivity/Index
    [HttpPost]
    public ActionResult Index(FormCollection collection)
    {
        try
        {
            // TODO: Add insert logic here

            return RedirectToAction("Index");
        }
        catch
        {
            return View();
        }
    }

错误说：

无法调用action方法＆System; Web.Mvc.ActionResult索引（Int32，Int32，System.String，System.String，System.String，Int32 ByRef）＆＃39;在控制器＆＃39; iCarAsia.SellerPortal.App.CRMPortal.Controllers.UserActivityController＆＃39;因为参数＆＃39; Int32＆amp; TOTALCOUNT＆＃39;通过引用传递。

参数名称：methodInfo

由于

Answer 1

此参数out int totalCount会导致您的错误。您通过互联网发送数据，不能通过引用传递参数。我很惊讶甚至编译。如果要返回总计数，请使用

public ActionResult Index(int pageNumber, int pageSize, string filter, string sortColumn, 
                          string sortOrder)
{
   int totalCount = ...
   return Json(totalCount);
}

这会将您的数据序列化为Json，并返回JsonResult，该ActionResult继承自1/2/2015 6:00:00 AM 1/2/2015 6:00:03 AM 1/2/2015 6:00:06 AM 1/2/2015 6:00:09 AM。

无法调用操作方法＆System; Web.Mvc.ActionResult索引（Int32，Int32，System.String，System.String，System.String，Int32 ByRef）

1 个答案: