Error Creating Control .net
Setup & Install by Heath Stewart Application Lifecycle Management Application Insights Release Management Team Foundation Server Testing Visual Studio Team Services All Languages Visual C++ Visual F# JavaScript TypeScript Python .NET .NET .NET with Beth Massi ASP.NET by Scott Hanselman OData Team WPF Platform Development Apps for Windows Bing Edge Microsoft Azure Office 365 Development Web Data Development SQL Server SQL Server Data Tools DocumentDB .NET Web Development and Tools Blog Your official information source from the .NET Web Development and Tools group at Microsoft. Controls State: "Error Creating Control" in the Design View in Visual Studio 2010 ★★★★★★★★★★★★★★★ April 15, 2010 by Web Development Tools Microsoft // 33 Comments 0 0 0 In VS 2010, if you are accessing the Session state in the OnInit(…) method of your page, similar to the following code snippet:
then you will encounter an “Error Creating Control” for ASP.NET controls when viewing the Design view of the page. For example, if you have an ASP.NET button control on the page, the designer will display the error: “Error Creating Control – Button1 Session state can only be used when enableSessionState is set to true, either in a configuration file or in the Page directive. Please also make sure that System. Web.SessionStateModule or a custom session state module is included in theby: ASPOSE - the market leader of .NET and Java APIs for file formats – natively work with DOCX, XLSX, PPT, PDF, images and more Rick Strahl @RickStrahl Posts - 1079 Comments - 13806 RSS Feed Rick's Sites Rick's GitHub Projects Rick's FoxPro Web Log West Wind Message Board CodePaste.net GeoCrumbs.net Rick's Products Markdown Monster WebSurge Html Help Builder Web Monitor Find this content useful? Consider making a small donation to show your support. Tweets by @RickStrahl Error Creating Control Errors in the ASP.NET Designer February 16, 2009 - from Maui, Hawaii 18 comments Tweet I’ve been getting a lot of Error Creating Control in the designer recently. Well, probably recently only because I’ve been using the https://blogs.msdn.microsoft.com/webdev/2010/04/15/controls-state-error-creating-control-in-the-design-view-in-visual-studio-2010/ designer a bit over the last couple of days to build some data entry heavy pages that use my DataBinder control, which is a lot easier to set up using the designer than in markup since it’s an extender control. But more than a few times in the last few days Visual Studio had decided to mangle my control with an error like this: It looks like somehow Visual Studio is failing to properly sync the files in the BIN https://weblog.west-wind.com/posts/2009/Feb/16/Error-Creating-Control-Errors-in-the-ASPNET-Designer directory (which are not actually used in the designer) and the temporary copy of the assemblies that simulates the ASP.NET temporary assembly directory. How these files can get out of sync or how they even can be differentiated is something I don’t understand. I’ve been trying to pinpoint what causes the problem and it seems (although I can’t duplicate it 100%) that when the underlying control assembly changes these errors start popping up in the designer. In this particular project I am using controls in my own Web Control project and since I’m working on the library at the moment this control assembly gets recompiled occasionally. Every time a change is made it seems like Visual Studio screws this up. The resolution? Restart Visual Studio which cleans out the temporary assembly folder. When I come back in and re-open the page everything is as it should be. It seems this behavior is something new though – I’ve done heavy control development and never really noticed issues with this until Visual Studio 2008 released possibly even as late as SP1. In the past I’ve always been able to use the designer’s Refresh option to get around new assemblies, but this no longer seems to work. The errors in the designer are so common that I am just not using the damn thing except for a few things like hooking up data binding to my custom binder
web application project Error Creating Control - control_Name '/LM/W3SVC/1/Root/Project_Name' is not a valid IIS application. You can resolve this error by following the below steps , the root http://weblogs.asp.net/hosamkamel/resolving-error-creating-control-xxx-in-web-application-project cause of this error is the incorrect mapping between web application project and http://www.thecodingforums.com/threads/error-creating-control-on-asp-net-web-form.19751/ the virtual directory in your IIS. To Resolve this error , follow the following steps: 1-Right click - you web application project and select Properties -> Web 2- in the server section choose Use IIS Web Server -> then click Create Virtual. 3- Clean your project and compile again. done :) error creating 8 Comments Thanks a lot, that is great tuba - Friday, September 28, 2007 8:55:12 AM Tuba, can you post what the error says, Thanks a lot. HosamKamel - Sunday, September 30, 2007 8:26:01 AM Thanks a lot for such a great help:-) Aarti - Tuesday, June 24, 2008 9:50:55 AM Thanks for the post - My AJAX controls were randomly causing this. Now all error creating control works fine. UnitesWebDev - Wednesday, August 13, 2008 2:46:44 PM Its amazing how microsoft has not fixed this bug yet. I run into it all the time. Especially when moving projects around. Matt - Monday, August 25, 2008 11:28:59 PM Thanks a lot, for this solution Abdullah - Tuesday, August 26, 2008 12:20:45 PM How do I get to step one. Ron - Wednesday, November 5, 2008 5:59:42 PM Hello! I'm trying do to what you have given above (instructions) because i am also into this problem but when i am clicking "Create Virtual Memory", it will just give me a warning message prompt saying "Unable to create the virtual directory. Configuring the virtual directory for ASP.Net 2.0 failed. You may need to manually configured this site for ASP.Net 2.0 in order for your site to run correctly. And also in the first place, my server is already in IIS Web server at the start up of Visual Studio 2005. Any solution for this problem? Thanks in advance. =) Russel - Wednesday, June 17, 2009 3:08:19 AM Comments have been disabled for this content. Terms Of Use - Powered by Orchard
"button" with red text showing this message instead of the control I've dragged onto the web form in Design View.? (But the page works fine at runtime). Does it indicate a problem with References for example? Thanks Owen PS. replies cc'd by email appreciated. owen, Sep 16, 2003 #1 Advertisements Herfried K. Wagner [MVP] Guest Hello, "owen" <> schrieb: > Generally speaking, what does it mean when I see a > "button" with red text showing this message instead of > the control I've dragged onto the web form in Design > View.? (But the page works fine at runtime). Does > it indicate a problem with References for example? You may want to turn to the ng for ASP.NET Web Controls questions: news://msnews.microsoft.com/microsoft.public.dotnet.framework.aspnet.webcontrols Web interface: http://msdn.microsoft.com/newsgroup...ft.public.dotnet.framework.aspnet.webcontrols > PS. replies cc'd by email appreciated. No. -- Herfried K. Wagner MVP · VB Classic, VB.NET http://www.mvps.org/dotnet Herfried K. Wagner [MVP], Sep 16, 2003 #2 Advertisements Cor Guest Re: "Error Creating Control" on VB.NET web form. Hi Owen, First of all, if you next time have a message for this newsgroup, just ask Error Creating Control on "VB.net" webform. I don't know this message but I saw this on MSDN. http://msdn.microsoft.com/library/d...html/vbtskaddingwebcontrolstowebformspage.asp \\\ If the Web Forms Designer cannot render a Web server control correctly, it displays a grey box with the text "Error Creating Control." This often means that the ASP.NET syntax of the control is incorrect - for example, if the runat="server" attribute is missing in a Web server control element, you will see this error. Point to the information icon (); a ToolTip is displayed with details about the error. /// Do you see that ToolTip and a grey box (you said a red text, but I don't know if it is in a grey box) Let me know if you did find the sollution or has some more information about the error?. Cor Cor, Sep 16, 2003 #3 owen Guest Re: "Error Creating Control" on VB.NET web form. "Cor" <> wrote in message news:3f67455e$0$25718$... > Hi Owen, > First of all, if you next time have a message for this newsgroup, just ask > Error Creating Control on "VB.net" webform. Sorry but I thought I d