CS0103 C＃当前上下文中不存在名称“ Json” [英] CS0103 C# The name 'Json' does not exist in the current context

问题描述

好吧

我写了JsonResult函数。但是我遇到以下错误：

I have written JsonResult funtion. But i get the following error:

CS0103 C＃名称 Json在当前上下文中不存在

CS0103 C# The name 'Json' does not exist in the current context

我找不到解决方案...请帮助？

I cant find solution to it... plzz help?

public JsonResult DoUserExist(string Emailaddress)
{
    bool ch = false;
    string connectionString = ConfigurationManager.ConnectionStrings["FreelanceDBCS"].ConnectionString;

    using (SqlConnection con = new SqlConnection(connectionString))
    {
        SqlCommand cmd = new SqlCommand("GetCities", con);
        cmd.CommandType = System.Data.CommandType.StoredProcedure;
        con.Open();
        SqlDataReader rdr = cmd.ExecuteReader();


        if (rdr != null)
        {
            ch = true;
        }
    }
    return Json(ch,JsonRequestBehavior.AllowGet);

}

推荐答案

！！

我忘了从控制器类派生我的类

I have forgotten to derive my class from Controller class

public class User: Controller
{

}

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