I have a MVC 2 project I'm trying to deploy to a QA server, and I'm having fits. I get a YSOD with the error starting as:
[InvalidOperationException: An error occurred when trying to create a controller of type 'DSC.Web.Controllers.HomeController'. Make sure that the controller has a parameterless public constructor.]
I've installed Visual Studio on the server, and the application runs without issue from Visual Studio. I've also checked the HomeController and it does have a parameterless public constructor. What could be causing this issue?
I am interested to know what happens with unused properties of a class when an object is instantiated?
Are there performance hits for having additional unused properties? What about complex properties that are accessing the database, but I'm not using them, are they still being loaded?
I am using a grid, with udpate panel, ajax controls etc.So in my code behind everytime the hit my grid page I am clearing the previous session value stored.I do this:
[Code]....
But sometimes when i navigate to other pages and come back to this page it errors out saying:
" Collection was modified after the enumerator was instantiated."
This JQuery datatable is present in one of my webuser control named "LeftVerticalLayOut.ascx". I am dynamically instantiating Webusercontrol on click of a link button. This link button is bound with the trigger event of Update Panel control.
So clarifying once again : I have one UpdatePanel which I am triggering with Link button("lnkLoadControl") . On click on "lnkLoadControl" I am able to load Usercontrol("LeftVerticalLayOut.ascx") onto the updatepanel. Now the jquery datatable I am creating in load event of Usercontrol is getting generated.
After the datatable(having id as "example") is created, I am calling the below code in my
function loadHandler() { Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler); Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler); }
[code]...
Now as I am creating the UserControl on the fly, the Jquery in not getting applied.
When I am using SqlDataReader class on that time without creating instance of the SqlDataReader Class I m using Command.ExecuteReader() Method. Why We not create the object of the SqlDataReader Class by using " new " Operator.We use like below:
SqlDataReader dr=cmd.ExecuteReader(); Why not we use this class like below:
i created a user control that has a template container.
[code]....
This is control is placed in a repeater which lists some customers. The customer is than bound to the user control. When the name template is instantiated in the container, the customer object is not yet available, but I need to access its name because it needs to get parsed before.
[code]....
Question: How can I access properties set for the user control BEFORE the template container is instantiated?
I have created a class library in which i m having Web Forms.now when i use this dll in ASP.NET websiteand call methods
ModuleTest obj = new ModuleTest(); List<CustumFields> objlist= new List<CustumFields>(); obj.CheckModule("admin", "password", "Testing102", objlist);
then it gives error,ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot be instantiated because the current thread is not in a single-threaded apartment
this.components = new System.ComponentModel.Container(); this.panel1 = new System.Windows.Forms.Panel(); [Code]....
this error occurs at .this.webBrowser1 = new System.Windows.Forms.WebBrowser();
when i mouse over webBrowser1 then it shows null....
I have created an asp.net application which contains a user control. Within the application this control works fine. I have then moved the control into a separate "control library" project. When I try to load the control from the control library I find that the asp elements defined in the ascx for the control are not instantiated - i.e. I get a null reference exception in the Page_Load event handler. The only changes that I have made to the original application are to reference my control library and to change the <%@ Register statement in the loading page to reference the control library dll:
[Code]....
Do I need to do something else to get the user control to initialize itself correctly?
first of all: this probelm was already an issue in [URL] but it does not resolve my problem: I have VS2008 and SQL Server 2008 Express with Adv. Option istalled. When compiling a page with the reportviewer control I get the error Type 'Microsoft.Reporting.RdlBuildProvider' cannot be instantiated under a partially trusted security policy (AllowPartiallyTrustedCallersAttribute is not present on the target assembly). C:websitesadAgencyweb.config
From the obove mentioned post I learned to use <trust level="Full" /> in the web.config file (which I never used on other Implementations that work). Now the compilation works, but when I start the web application and call that page I get a lot of JScrip Errors like: Runtime error in Microsoft JScript: 'RSClientController' is undefined, which comes from a line in the dynamic page.aspx file: document.getElementById('ctl00_maincontent_ReportViewer1').ClientController = new RSClientController "ctl00_maincontent_ReportViewer1_ctl03", "ReportFramectl00_maincontent_ReportViewer1", ...
I should mention, that I had SQL Server 2005 Express uninstalled before the 2008 version.
