Error Creating Control Value Cannot Be Null Parameter Name Parsetext
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up ASP.NET Master Page frameworkName: Value cannot be null error up vote 3 down vote favorite I'm going over some ASP.NET tutorials and the first one I'm looking at is how to make a Master Page. When I do create a master page, I get an error: Value cannot be null. Parameter name: frameworkName It occurs in the first line of my master page (MasterPage.master) and it's the default page that gets created- I haven't modified it at all: <%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %> Could somebody tell me what is the frameworkName parameter and how can I get rid of this error? FYI: I'm using Visual Studio 2010. asp.net master-pages share|improve this question edited Jul 19 '10 at 18:43 asked Jul 19 '10 at 18:35 Lirik 23.3k19115191 add a comment| 2 Answers 2 active oldest votes up vote 8 down vote accepted This is a bug in VS 2010: The reason you are seeing this error is that there are assembly references in the xaml which you are failing to resolve. There is a startpage.csproj in the same directory as the .xaml file. Please copy both to the new folder and open the project file in VS2010. This should work. http://connect.microsoft.com/VisualStudio/feedback/details/485162/edit-startpage-xaml-frameworkname-value-cannot-be-null Here is master file that I currently have, so I would check for missing assemblies?: <%@ Master Language="C#" AutoEventWireup="true" CodeFile="Site.master.cs" Inherits="SiteMaster" %> Can you also recreate the solution and import into the new .sln file ? share|improve this answer answered Jul 19 '10 at 18:44 JonH 24.3k658102 1 thanks for the info! Strangely, the problem fixed itself after I restarted VS2010 and re-opened the project. It said that the project was built for an older version of .NET and it asked me to convert to .NET 4.0; after converting, the error was gone. –Lirik Jul 19 '10 at 18:57 @Lirik - Yes this is scheduled to be fixed in the next patch / update to VS2010. It includes a fix for missing assembly references. This error could easily go away by r
yasminpriya Gaurav Pal Post New Web LinksError when creating a webpart using user controls Posted By: Posted Date:October 23, 2010 Points:0 Category :SharePoint I received the following error when trying to create a webpart with user controls. Unable to cast object of type 'ASP._controltemplates_UserControl_ascx' to type 'namespace.class'. I deleted all the files from the location C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary http://stackoverflow.com/questions/3283932/asp-net-master-page-frameworkname-value-cannot-be-null-error ASP.NET Files, but still the same error occurs. Here is the code for referencing the user control. protected const string defaultUserControlPathField = "~/_controltemplates/myUserControl.ascx"; protected string userControlPathField = defaultUserControlPathField; namespace.class tempControl; UserControl myControl; myControl = (UserControl)this.Page.LoadControl(this.userControlPathField); tempControl = (namespace.class)myControl; Does anyone http://www.dotnetspark.com/links/46811-error-when-creating-webpart-using-user-controls.aspx have an idea about this error? Thanks V V View Complete PostMore Related Resource Links dynamic creating controls in webpart Hello everybody, ÃÂ My webpart (wss 3.0, VS2005) initialy contain a listbox. Depeding on the selection made a certain amount of textboxes are to be created and rendered. Via these dynamically created / rendered textboxes text can be submitted (via a button), for futher processing. ÃÂ I am not sure how, or where in the webpart code,ÃÂ to dynamically create these textboxes. ÃÂ Maybe somebody can give me some advise on this topic. ÃÂ Thanks in advance ÃÂ Gijs ÃÂ ÃÂ ÃÂ ÃÂ ÃÂ ÃÂ way to prevent creating, loading and rendering previously rendered controls on postback in a webpart Hi All, I have a web part and a link control in there when i click it, wp displays rows of data below the previously rendered contents...
endpoint, to use the more popular terminology) is a common way for a system to provide an aggregated representation of its operational status. This status representation typically includes a http://webapibloggers.com/ list with the individual system components or health check points and their individual status (e.g. database connectivity, memory usage threshold, deadlocked threads). For instance, the popular Dropwizard Java framework already provides an out-of-the-box health check resource, located by default on the /healthcheck URI of the administration port, for this purpose. The following is an example of such representation, defined by a JSON object containing a error creating field by each health check verification. { "deadlocks":{ "healthy":true }, "database":{ "healthy":true } } Apparently, it is also a common practice for a GET request to these resources to return a 500 status code if any of the internal components reports a problem. For instance, the Dropwizard documentation states If error creating control all health checks report success, a 200 OK is returned. If any fail, a 500 Internal Server Error is returned with the error messages and exception stack traces (if an exception was thrown). In my opinion, this practice goes against the HTTP status code semantics because the server was indeed capable of processing the request and producing a valid response with a correct resource state representation, that is, a correct representation of the system status. The fact that this status includes the information of an error does not changes that. So, why is this incorrect practice used so often? My conjecture has two reasons for it. First, an incomplete knowledge of the HTTP status code semantics that may induce the following reasoning: if the response contains an error then a 500 must be used. Second, and perhaps more important, because this practice really comes in handy when using external monitoring systems (e.g. nagios) to periodically check these statuses. Since these monitoring systems do not commonly understand the healthcheck representation, namely because each API or framework uses a different one, the easier solution is to rely solely on the status code: 200 if everything