Develop Reference

ASP.net project parser error?

Zipped up my application for a university assignment and now suddenly it wont work???I Used visual studio to create a class diagram and added assosciations, could this have altered the code?
Below is the error i get when i try launch in browser..
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: Could not load type 'WebApplication4.MvcApplication'.
Source Error:
Line 1: <%# Application Codebehind="Global.asax.cs" Inherits="WebApplication4.MvcApplication" Language="C#" %>
Source File: /global.asax Line: 1
i get this error when i try build my project
Error 2 The type 'WebApplication4.Models.CoreSheetsDBContext' cannot be used as type parameter 'TContext' in the generic type or method 'System.Data.Entity.Migrations.DbMigrationsConfiguration'. There is no implicit reference conversion from 'WebApplication4.Models.CoreSheetsDBContext' to 'System.Data.Entity.DbContext'. G:\Software\Projects\WebApplication4\WebApplication4\Migrations\Configuration.cs 8 27 WebApplication4

// First guess was: Try changing CodeBehind to CodeFile.
Update (question was updated)
(1) A "/" at the end of line 8 is not syntactically correct. (Does it look the same in your code? Would be fine know to the rest of the line including the closing '>',)
... sealed class Configuration : DbMigrationsConfiguration
<WebApplication4.Models.CoreSheetsDBContext/
(2) Let's assume that the ´/´ was just a typo and your code contains a ´>´ instead. DbMigrationsConfiguration has this signature:
public class DbMigrationsConfiguration<TContext>
: DbMigrationsConfiguration where TContext : System.Data.Entity.DbContext
The class CoreSheetsDBContext which you pass as a generic parameter must be a subclass of System.Data.Entity.DbContext. Check that CoreSheetsDBContext actually inherits from System.Data.Entity.DbContext. I.e. it should look like this:
using System.Data.Entity;
public class CoreSheetsDBContext : DbContext { ... }

"Using" statement in asp.net fails

I'm a PHP developer learning ASP.NET, and it seems one has to twist an arm just to do something simple like connect to a database.
When I do the following.
<%# Page Language="C#"%>
<%
using System.Data.SqlClient;
using MySql.Data.MySqlClient;
//Connect to database
SqlConnection connection = new SqlConnection("Server=MYSQL5003.Smarterasp.net;Database=yyy;Uid=zzz;Pwd=xxx;");
//Determine the action we're performing
switch(Request.QueryString["action"]){
case "unsubscribe":
Response.Write(Request.QueryString["email"]);
break;
case "export":
Response.Write(Request.QueryString["action"]);
break;
default:
//Default action
break;
}
%>
I get a syntax error for some reason.
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS1003: Syntax error, '(' expected
Source Error:
Compilation Error
Line 1: <%# Page Language="C#"%>
Line 2: <%
Line 3: using System.Data.SqlClient;
Line 4: using MySql.Data.MySqlClient;
Line 5: //Connect to database
Am I not supposed place the "using" statements in another file?

You have to use #Import when bringing in a namespace inline on an aspx page.
<%# Import Namespace="System.Data.SqlClient" %>

What is the cause of compilation error in my code

I am running asp.net, C#4.0 application in VS2010. I get the following compilation error:
Server Error in '/' Application.
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: ASPNET: Make sure that the class defined in this code file matches the 'inherits' attribute, and that it extends the correct base class (e.g. Page or UserControl).
Source Error:
Line 1: using System;
Line 2: using System.Collections.Generic;
Line 3: using System.Linq;
My page attribute is :
<%# Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs"
EnableEventValidation="false" Inherits="jsPlumb_jsPlumb_Default2" %>
my c#codebehind class:
namespace CompanyDisplay.jsPlumb.jsPlumb.jsPlumb
{
public class jsPlumb_jsPlumb_Default2 : System.Web.UI.Page
{
}
}
i want namespace to present for running some webservice applications.

Try to do this :
add batch=”false” in the compilation tag of your applications web.config file as shown below
compilation debug=”true” batch=”false”
clean solution
delete the temporary files folder in Visual Studio(the folder which it shows in the exception)
do an iisreset and the rebuild my code again

I got the ANSWER ; I should give the inherit attribute as;
inherits="CompanyDisplay.jsPlumb.jsPlumb.jsPlumb.jsPlumb_jsPlumb_Default2"

This error shows up when code-behind class name doesn't match "inherits" attribute on your aspx page. Maybe you tried to rename something?
Furthermore, I've seen this error, when you try to view a new page, but didn't compile the source, so even though your aspx exists, it can't fight the corresponding code-behind class.
Edit:
You have a completely messed up naming conventions, no surprise you're having troubles to match class names properly.
Sorry, but this is just preposterous!
inherits="CompanyDisplay.jsPlumb.jsPlumb.jsPlumb.jsPlumb_jsPlumb_Default2"
Fix your conventions and maybe you find yourself having source files like this:
CodeBehind="Default.aspx.cs" Inherits="MyNamespace.jsPlumb.Default"
Don't do it like jsPlumb.jsPlumb.jsPlumb....That's just a nightmare!

C# App_Data class not inherited by aspx - inherits attribute question

I have been trying to figure this out for a while now and even though there are plenty of Google results for the error message I receive the solution eludes me. I think that I am doing what I am supposed to be doing.
VS2010, I created a common.cs in App_Data. The content of common.cs are functions which will be used by all pages. As far as I can tell this is the proper way to share code-behind code among multiple pages.
App_Data\common.cs
namespace nprah
{
public class BasePage : System.Web.UI.Page
{
}
{
fish-creek.aspx.cs
namespace nprah
{
public partial class Fishck : BasePage
{
}
}
fish-creek.aspx
<%# Page Language="C#" AutoEventWireup="true" CodeFile="fish-creek.aspx.cs" Inherits="nprah.BasePage" %>
If I understand the Inherits attribute correctly then it does need to contain the NameSpace.ClassName, which mine does. See: http://support.microsoft.com/kb/312311
When I run this code it results in the following output:
Compiler Error Message: ASPNET: Make sure that the class defined in this code file matches the 'inherits' attribute, and that it extends the correct base class (e.g. Page or UserControl).
Source Error:
Line 11: {
Line 12:
Line 13: public partial class Fishck : BasePage
Line 14: {
Line 15:
Visual Studio is not showing any errors during the design. Any guidance you may be able to provide will be much appreciated. Thanks in advance.

In your ASPX it should be
Inherits="nprah.Fishck"
Inherits in your .aspx should be mapping to your code file(.cs)... and from there your codefile will inherit your basepage like you already did.
And also try to validate that : CodeFile="fish-creek.aspx.cs".
Because with the name of the file you supplied it should be : Codefile="fishck.aspx.cs".
Maybe just a typo.

ASP.NET C# - Source File Parse Error - Could not load inherits type file

How do I fix this error?
I'm running .NET Framework v4.0.30319 so the Framework shouldn't be an issue. I'm not using any DLL files or bin directories. How do I setup the IIS/Virtual Directory if I'm using Forms Authentication for the whole website using VS2010?
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: Could not load type
'ACAWebApplication.Pages.State_Carrier_Search'.
Source Error:
Line 1: <%# Page Title="ACA Web App - State Carrier Search" Language="C#"
MasterPageFile="~/Pages/User.Master" AutoEventWireup="true"
CodeBehind="State_Carrier_Search.aspx.cs"
Inherits="ACAWebApplication.Pages.State_Carrier_Search" %>
Line 2: <asp:Content ID="Content1" ContentPlaceHolderID="HeadContent"
runat="server">
Line 3: <style type="text/css">
Source File: /Pages/State_Carrier_Search.aspx Line: 1
The Codebehind for State_Carrier_Search.aspx.cs file:
namespace ACAWebApplication.Pages
{
public partial class State_Carrier_Search : System.Web.UI.Page
{
protected void Page_LoadS(object sender, EventArgs e)
The code for State_Carrier_Search.aspx file is as follows:
<%# Page Title="ACA Web App - State Carrier Search" Language="C#" MasterPageFile="~/Pages/User.Master" AutoEventWireup="true" CodeBehind="State_Carrier_Search.aspx.cs" Inherits="ACAWebApplication.Pages.State_Carrier_Search" %>
<asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
thanks!

Thou shalt not name class and namespace the same
THIS is Your problem
namespace ACAWebApplication.Pages
{
public partial class ACAWebApplication.Pages.State_Carrier_Search : System.Web.UI.Page
{
The parser sees an ACAWebApplication.PAges namespace and sees ACAWebApplication.Pages class name. This is probably legal but it is very wrong
Drop the ACAWebApplication.PAges from the class name and it should work. Was it autogenerated or You have extracted the namespace from the class name. Either way change it
and read
Eric lippert musings on it - whole series quite enlightening

Is the .NET version correctly set in IIS? This could be a .NET 2.0 app trying to run on the 1.0 framework.

Please refer to the Specify a .NET Framework Version for an Application Pool (IIS 7) article to learn more how to specify a .NET Framework version for an application pool.