Error in return view

Error:Cannot implicitly convert type 'System.Web.Mvc.ViewResult' to 'System.Data.DataSet'

samplecontroller.cs

public DataSet displaydetails(student s)

{

dbconnection db = new dbconnection();

DataSet ds = db.display(s);

s.show = ds;

return View(s); //error shows here

dbconnection.cs

public DataSet display(student s)

{

SqlCommand cmd = new SqlCommand("select * from register", con);

SqlDataAdapter da = new SqlDataAdapter();

DataSet ds = new DataSet();

da.Fill(ds);

return ds;

}

displaydetails.cshtml

@model MVC_Homework.Models.student

Layout = null;

}

displaydetails

for(int i=0;i

{

var name = Model.show.Tables[0].Rows[i]["name"].ToString();

var age = Model.show.Tables[0].Rows[i]["age"].ToString();

var place = Model.show.Tables[0].Rows[i]["place"].ToString();

}

Name	Age	Place	Edit	Delete
@name	@age	@place	@Html.ActionLink("Edit","edit")	@Html.ActionLink("Delete","delete")

Anybody help to solve this..

thks in adv!!