Server Error in '/' Application.

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: The file '/costos.aspx.cs' does not exist.

Source Error:


Line 1:  <%@ Page Language="C#" MasterPageFile="~/site.Master" AutoEventWireup="true" CodeFile="costos.aspx.cs" Inherits="costos1" %>
Line 2:  
Line 3:  <asp:Content runat="server" ID="headContent" ContentPlaceHolderID="headContent">

Source File: /costos.aspx    Line: 1


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4087.0