Classes And Namespaces - Error CS0101 Namespace Already Contains Definition
Nov 29, 2010
I keep getting the error: Error message: CS0101: The namespace '<global namespace>' already contains a definition for 'checkvalue'. Then, I rename the Inherits from the @page directive in both the .aspx and .aspx.cs pages and it works! My website has only 2 pages, and both use the same class (same class name, exactly same syntax) but it has been copied and pasted and the 2 aspx pages (and aspx.cs pages) are not referencing each other. In other words, both aspx.cs pages (called page1.aspx.cs and page2.aspx.cs) has the class
public class CheckValue
{
//content
return true;
}
Both the aspx pages reference the 'inherits' files seperately:
I get this error "CS0101: The namespace '<global namespace>' already contains a definition for 'BasePage'" now that I have uploaded my website to a server though before it wasn't there. It is OK when I run it locally just not from server. It refers to a theme
what are the namespaces that should be well known by a fresher to initiate asp.net learning, what is the main use of a namespace. what is the use of 'args'
I'm trying to understand the relationship between assemblies, namespaces and classes. Can anyone help explain or point me to a usefule link?
1. I understand that an assembly is typicall a dll or an exe (perhaps other files also). Does each project compilation produce only 1 dll? Or is the number of DLL dictated by something completely different?
2. I read each assembly can contain multiple classes. Asingle assembly can contain classes for multiple namespaces, and asingle namespace can span multiple assemblies.
Is there anyway I can extend LINQ classes through different namespaces?Typically in my class libraries I have a namespace for each class object and their associated DAO and service classes in a folder of my project, therefore on the front-end I can only use the namespaces associated with the given page and not clutter my intellisense or load in a bunch of excess stuff.
However, I have found that upon adding my .dbml LINQtoSQL file, whatever namespace that is in, whether it's the project root namespace or a custom one, is the only namespace I can use partial class extension in.I have tried even creating a custom workspace (placing the .dbml file in a folder) and then including a using statement to that namespace and I still cannot extend the partial classes.Is there anyway I can do this? Or to have the .dbml file count as being in every namespace? I don't want to remove all namespaces but the root one either.such when I try doing the partial class from a different namespace I get the following error:
Error 1 'Id' is not a member of 'LCFVB.EntityNS.Entity'. C:Usersshol726.UILAWDocumentsVisual Studio 2008ProjectsLCFVBEntityNSEntity.vb 10 7 LCFVB
If I add a namespace element to the system.web pages namespaces section of the web.config do I still have to add references in the code behinds in order to have access to the members of that namespace at design-time?
Is there any limit on number of classes that a namespace can have in .net ? Further what is the recommended number of classes that there should be in a namespace?
If I included a page class into a namespace the Profile page property becomes undefined.Why and how to solve this problem.For example I want to include my pages classes into a namespace MyProject.UI.
when I put a break point i get this error message:
Error 1 The type or namespace name 'X509Certificate' could not be found (are you missing a using directive or an assembly reference?) D:UsersatttDesktop fre etetrtDefault.aspx.cs 7 53 D:...attt
All my pages are receiving this error - website is down; here's the code:
[Code]....
Except my web config file shows linq is accounted for? [Code]....
I would note that I updated to VWD Express 2010 then had to revert back to 3.5 because my host at Arvixe had not updated my server yet. He then said he updated it and I reverted up to 4.0 again. It turned out he hadn't and I tried to revert back...and then this showed up and numerous other errors.
I'm getting this error: inboxcontrol_ascx does not contain a definition for DeleteMsg and no extension method DeleteMsg_click accepting a first argument of type asp.inboxcontrol could be found (are you missing a using directives or an assembly reference?)example:
My code all worked under mvc 2 with vs2008. It didn't work when I converted it to mvc 3 and vs2010. Here is one of errors: Compiler Error Message: CS1061: 'object' does not contain a definition for 'LabelText' and no extension method 'LabelText' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?)
Each time I build my MasterPage.master.aspx, I get an error that reads: The type 'MasterPage2' already contains a definition for 'head'This error appears for all the protected values in my MasterPage.master.cs file. Below is my MasterPage.master.aspx codes:
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage2" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>Untitled Page</title>
[Code] ....
And here is my MasterPage.master.cs code:
using System;using System.Web;using System.Web.Profile;using System.Web.UI; using System.Web.UI.HtmlControls;using System.Web.UI.WebControls; public partial class MasterPage2 : System.Web.UI.MasterPage{ protected ContentPlaceHolder head; protected HtmlAnchor A1;
Details: The report definition has an invalid target namespace 'http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition' which cannot be upgraded. C:UsersUserDocumentsVisual Studio 2010WebSitesWebSite4CpanelReportspay.rdlc 1
'System.Web.UI.HtmlControls.HtmlInputFile. does not contrail definition for delete and no extension method delete accepting a first arument of type System.Web.UI.HtmlControls.HtmlInputFile.
In my mvc asp.net application,I am getting error in edit function : in given code
[Code]....
I am getting this exception:
Source : System.Data.Entity
Stack Trace : at System.Data.EntityClient.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) at System.Data.Objects.Internal.ObjectQueryExecutionPlan.Execute[TResultType](ObjectContext context, ObjectParameterCollection parameterValues) at System.Data.Objects.ObjectQuery
[Code]....
1 forMergeOption) at System.Data.Objects.ObjectQuery
[Code]....
1 source) at System.Data.Objects.ELinq.ObjectQueryProvider.b__0[TResult](IEnumerable
[Code]....
1 query, Expression queryRoot) at System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[S](Expression expression) at System.Linq.Queryable.First[TSource](IQueryable`1 source) at admin.com.Controllers.DocsGridController.Edit(Int32 id) in c:DataFinalCodeAC015acomMVCSourceCodeadmincomControllersDocsController.cs:line 307
Message : An error occurred while executing the command definition.See the inner exception for details.This error is generated when I connect with remote server.
I have develop a function in which insert textbox value and grid view value into database.
Problem is that my web method call but it will add some time value into database and give me the following error. Its work once time other can’t work.
An error occurred while executing the command definition. See the inner exception for details.
function addData() { debugger; var Customers = new Array(); var desigantion = $("#TextBox4").val(); $('[id*=GridView1]').find('tr:has(td)').each(function () { var Customer = {};
[Code] ....
My web method
public class Customerdata { public string code { get; set; } public string Product { get; set; } public string Rate { get; set; }
[Code] ....
After once time run then it give me an error.
An error occurred while executing the command definition. See the inner exception for details.
Installed T4MVC (via nuget) into my MVC3 Project.Upon compile I get this error (for each of my 5 current controller classes)
Error 7 The type or namespace name 'Account' does not exist in the namespace 'Application.MVC' (are you missing an assembly reference?) G:DevRepositoriesTemplatesrcappPresentation TierApplication.MVCAccountController.generated.cs 36 61 Application.MVC
