This may seem like a really simple question, but can I use the System.Threading namespace in ASP.NET web forms? I have a web page which uses HTTP GET/POST to gather page customisations (title, subtitle, etc.) from the user and numerical input which is passed to a ASMX web service. Currently they work sequentially, the customisation first followed by numerical processing. So can I use threading to do this?
View 3 Repliesi get the following error when trying to compile my asp.net site after updating the project from vs2008 to vs2010The type or namespace name 'Syndication' does not exist in the namespace 'System.ServiceModel' (are you missing an assembly reference?)I have the asp.net site targeting 3.5 framework (as it did in vs2008)I also added a reference to System.ServiceModel.Web
View 3 RepliesI'm using MonoDevelop on Mac OS X Snow Leopard to develop an ASP.NET MVC Application. I have tested it on Visual Studio 2008 on Windows 7 and it worked fine, but when compiling it on MonoDevelop it throws the error: The type or namespace name 'Objects' does not exist in the namespace 'System.Data' under this line: public partial class MoviesDBEntities : global::System.Data.Objects.ObjectContext
View 1 RepliesI have a ASMX web service. When I access it from a client the ASMX get compiled but I get this error:
Looking at csc.exe command line from the error detail the System.Windows.Forms asseembly is not referenced.
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0234: The type or namespace name 'Windows' does not exist in the namespace 'System' (are you missing an assembly reference?)
Source Error:
Line 3: using System.ComponentModel;
Line 4: using System.Drawing;
Line 5: using System.Windows.Forms;
Line 6: using System.Xml;
Line 7: using Idp.Core.Configuration;
I uploaded my website to the server, and I have there a working with wcf - it should be fw 3.5I saw that fw 3.5 is installed on the server and also we have re fw 3.0 sp1.I run my website : www.qenglishcenter.comand I'm getting an error : The type or namespace name 'Linq' does not exist in the namespace 'System' (are you missing an assembly reference?)shouldn't System.linq be already existed ?
View 2 RepliesI m getting the error System.Threading.ThreadAbortException while exporting datatable to CSV. But export to CSV is completed sucessfully.Here is my Code:
Dim dt As DataTable
Dim sb As New StringBuilder
dt = objsqlds.Tables(0)
[code]...
I've got an asp.net application, it's running on DotNetNuke, under load we get the occasional out of memory exception. I've got a dump loaded it into windbg. the end of !dumpheap -stat is
1192a588 88684 2128416 AutoMapper.MappingEngine
79333594 9482 2266348 System.Byte[]
134b0034 88695 2838240 System.EventHandler`1[[AutoMapper.TypeMapCreatedEventArgs, AutoMapper]]
13d8703c 88684 4611568 System.Collections.Generic.Dictionary`2[[Castle.DynamicProxy.Generators.CacheKey, AutoMapper],[System.Type, mscorlib]]
13d86dc8 88684 4611568 Castle.DynamicProxy.ModuleScope
13d865bc 88684 4611568 System.Collections.Generic.Dictionary`2[[AutoMapper.Internal.TypePair, AutoMapper],[AutoMapper.IObjectMapper, AutoMapper]]
79327434 88703 4612556 System.Collections.Generic.Dictionary`2[[System.String, mscorlib],[System.Int32, mscorlib]]
6c38e4e4 88684 5675776 System.Threading.ReaderWriterLockSlim
79330b24 87736 6458012 System.String
000d9c88 129 24186884 Free
793042f4 221202 101117016 System.Object[]
6c38e4a0 22703104 544874496 System.Threading.ReaderWriterCount
I can't find much information on the System.Threading.ReaderWriterCount, as it seems to be the problem. What is the likely cause? Or failing that what's the best next step to work that out? Based on the pointer from the given answer I had a look at ReaderWriterLockSlim. I wasn't using it directly, but I saw that it had 88684 instances, digging deeper I saw quite a few classes with that number of instances, pointing to AutoMapper.MappingEngine. This should be a singleton, so I've had a look at where it's being created. I suspect that it's the DI container and have made some changes around that to see if it helps
I am getting this compilation error"
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 doing one application.That is grid binding .i got this error
System.Web.Mvc.HtmlHelper<object>' does not contain a definition for 'GridView' and the best extension method overload 'MvcApplication2.Code.GridViewExtensions.GridView<T>(System.Web.Mvc.HtmlHelper, MvcApplication2.Code.GridViewData<T>, System.Action<MvcApplication2.Code.GridViewData<T>>, System.Action<T,string>, string, string, System.Action<T>, System.Action<MvcApplication2.Code.GridViewData<T>>)'
how to find this solution and how to change System.Web.Mvc.ViewPage to System.Web.Mvc.ViewPage<Model>
in mscorlib.dll assembly with "System" namespace present ,why it was necessery to take the same name "System" for a assembly System.dll ? Is there any relation in choosing the same name ?
View 7 RepliesI have just started to look at the new "System.Threading.Tasks" goodness in .Net 4.0, and would like to know if there is any build in support for limiting the number of concurrent tasks that run at once, or if this should be manually handled.
E.G: If I need to call a calculation method 100 times, is there a way to set up 100 Tasks, but have only 5 execute simultaneously? The answer may just be to create 5 tasks, call Task.WaitAny, and create a new Task as each previous one finishes. I just want to make sure I am not missing a trick if there is a better way to do this.
[code]....
When i writing: "System.W...", the intellisence isn't show me "System.Web" why?
View 4 Repliestell me the class hierarchy of System.IO namespace?It's not clear in MSDN library.
View 5 RepliesI am using vb.net/VS.Net 2008/3.5. I am trying to Import the System.Web.Profile namespace like so:
<code>
Imports System.Web.Profile
</code>
However when I add that in I get a green squiggly error line that when hovering over shows me "Namespace or type specified in 'System.Web.Profile' doesn't contain any public member or cannot be found. Make sure the namespace or type is defined and contains at least one public member. Make sure the imported element doesnt use any aliases" When I use intellisense I see only three namespaces for system.Web, which are:
<code>
Imports System.Web.AspNetHostingPermission
Imports System.Web.AspNetHostingPermissionAttribute
Imports System.Web.AspNetHostingPermissionLevel
</code>
Do I need to add a reference in order to see System.Web.Profile?
I am following the tut here[URL]
[Code]....
what is the use of System.Diagnostics namespace classes
View 3 RepliesI'm using ASP.NET4.0, and getting the following compilation error:
CS0234: The type or namespace name 'Documents' does not exist in the namespace 'System.Windows' (are you missing an assembly reference?)
Source Error:
[Code]....
Source File: c:Documents and SettingsstilwellDesktopDEV40-1App_CodeLoadForm.cs Line: 2
[Code]....
This started as Could not load type 'Global' error. After I tried a few things and getting no where I deleted the Global.asax file and now the error is Could not load type '[namespace].???'Where ??? is the class name of every page I try to load.The web site (when executed within VS2008, local dev computer) works fine but once published (with no errors) and deployed to the server gives me Could not load type '[namespace].???' error
I did install elmah and I was able to get more details for this "generic" Could not load type '[namespace].???' error
elmah reports a HTTP error 500 :
System.Web.HttpException Could not load type '[namespace].???' ->
System.Web.HttpParseException: Could not load type '[namespace].???'
I have checked the "basics"
References
Doing a clean and a build Checking the Inherits attr in the HTML against the code behind
UPDATE #1 I did deploy the site to a different DEV computer (configured IIS, virtual folder, etc.) and it works. When I use the same published code on the server, get the generic Could not load type '[namespace].???' error
UPDATE #2 I created a test web app. One form (Default.aspx) with a button. The click event does a Response.Write("Hello World"); I moved this app to the server and guess what, I get the Could not load type TestSite._Default
UPDATE #3 According to the fusion log viewer, these two websites are attempting to load CppCodeProvider and VJSharpCodeProvider, but I have no references to any of these. After a Google search, I found this post.I checked and I have no references to JAVA files.
i´m creating a webpage as a project to school. In this project i´m dynamically adding data to Placeholder (PH1). Is possible to send all the content from PH1 by using namespace System.Net.Mail?
View 2 RepliesI am trying to write a macro that accesses an XML file external to the editor.
For some reason, I am getting error messages on everything within the System.XML namespace
'Type XmlDocument is not defined'
'Type XmlTextWriter is not defined'
'Type XmlElement is not defined'
( etc... etc... etc... )
I've imported the namespace at the top of the editing context within the macro IDE:
Imports System.XML
I have also tried to reference the namespace members with a complete namespace reference:
System.XML.XmlDocument
It didn't work. It is still being indicated as undefined.
I've tested the code from within a stand-alone console app, and it works fine.
From this, am I to conclude that the System.XML namespace is not accessible from the macro facility?
Is there another option?
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?
View 1 RepliesI want to use the DataContractJsonSerializer class. This is contained within theSystem.Runtime.Serialization.Json namespace and the System.ServiceModel.Web dll.or some reason, when I add the using directive for the namespace, Visual Studio says it doesn't recognise the Json namespace in System.Runtime.Serialization.When I try to add the System.ServiceModel dll, nothing happens, which suggests to me it's already referenced. (Because nothing also happens when I try to add a reference to System.Web which is definitely referenced!)
View 6 RepliesUsing System.Linq; namespace does not supportted in VS2005 version 2.00.
View 1 RepliesI'm getting a warning in my page directives saying that this namespaceystem.Web.UI.DataVisualization.Charting isn't found. I went to add a reference to the project so I could import the namespace and this namespace does not exist in the .NET tab. What do I need to do to get this working? Also, even if I add this to my Global Assembly Cache, that won't do anything for the web host web server that my website is publically on.Any guidance on this? How to get it on my local machine as well as understanding that it'll work on the actual web server?
View 5 Repliesi am facing a problem in theme and skin.
when i am trying this in skin
<asp:TextBox runat="server" BackColor="#BFDFFF" BorderColor="Black"></asp:TextBox>
<asp:DropDownList runat="server" BackColor="#BFDFFF"> </asp:DropDownList>
<asp:Button runat="server" BackColor="#BFDFFF" BorderColor="Black" />
<asp:GridView runat="server" AllowPaging="True"
AutoGenerateColumns="False" Width="100%">
<RowStyle BackColor="#BFDFFF" ForeColor="Black" />
<SelectedRowStyle BackColor="#FFFF99" />
<HeaderStyle BackColor="#666666" />
<AlternatingRowStyle BackColor="Silver" />
</asp:GridView>
<asp:DataList runat="server" Width="100%" RepeatColumns="3">
<ItemStyle BackColor="#BFDFFF" ForeColor="Black" Width="90%" />
<AlternatingItemStyle BackColor="Silver" />
<HeaderStyle BackColor="#666666" />
</asp:DataList>
and < pages theme="BlueTheme" runat="Server"/>
then this error comes .
Error1 'XElement'is ambiguous in the namespace 'System.Xml.Linq'.InternalXmlHelper.vb