I'm trying to list all data from one table(ms sql server table). as ORM I use Entity Framework. now, I'm tried to write something to do this:
Model:
[code]....
I'm very new to Visual Studio and I am getting this error when trying to update an Oracle table from Gridview using a tableadapter datasource. I've followed the instructions in my text very closely but am at a loss as to why this error is occurring.
Details: System.MissingMethodException: No parameterless constructor defined for this object.
Source Error:
[Code]....
Stack Trace:
[Code]....
this is the stack trace error I am getting. At this point, I'm a little clueless how to resolve it.
I am doing Music Store sample application.Here my code.
StoreViewModel
[Code]....
StoreController
[Code]....
Create.aspx
[Code]....
But when i click Save it show Error
Server Error in '/' Application.
No parameterless constructor defined for this object.
I receive the error "No parameterless constructor defined for this object", I have read some post on this forum about this error, but i cannot get it to work.
ViewModel
[Code]....
Controller:
[Code]....
[Code]....
First I incorrectly had my node defined in /shared/web.config instead of the web.config in the root of the WebUI project. I also had not correctly defined my connection string within web.config. I have pasted the proper web.config sections below:
[code]....
I've set up a strongly-typed View and a controller method to save the object represented in that View. The object in question is from a class that uses named parameters with default values. This is not a database object, but rather is the intermediate object that is used for the display and user input. It gets translated into a database object in the service class. Anyway, when I attempt to save the object, I get the following error:
System.MissingMethodException: No parameterless constructor defined for this object.
This is kind of aggravating. I can add a parameterless constructor to the class, and then everything works just fine. I just don't understand why it is necessary. I'm new to named parameters with default values, but the reading and such that I've done has described that method calls with default values do not have to have a 'no-parameter' implementation. You can just call the method with any or none of the parameters specified and everything works as expected. If there is a 'no-parameter' implementation and no params are passed, then that one is used, since it is more specific than the one with default values. Is the behavior somehow different when this is used in the constructor of a class? Why would I have to include a parameterless constructor when I have all the values accounted for? Is the runtime creating an object on the fly as the save method executes, which requires this? The method is like this:
[Code]....
I'm wondering if the object is instantiated by the runtime in order to populate the method parameter, and then assigned values from the form collection. I suppose that would make sense, but I do not understand why this causes an exception. For what reason would a parameterless constructor be required?
I have no idea why my form submit is not passing the model back to the Controller action
Here is the View:
[Code]....
Heres the Controller:
[Code]....
Here is my Model:
[Code]....
By default Index, renders with an empty results set, on button press i want it to go to the "StartSearch" Action, and rerender the index with possibly non-null results set.
Does anyone have any good examples of how to make Unity 1.2 or 2.0 work with ASP.NET WebForms?
I thought I had this figured out, but evidently I'm missing something. Now I'm getting the error; "No parameterless constructor defined for this object". I remember getting this error a couple years ago, I and just don't remember what I did.
Obviously Unity isn't working as it should because somewhere along the way I've forgotten something.
Here's some of my code:
Global.asax
[code]....
I'm using a GridView and a LinQDataSource (Northwind database) and this error appears when website runs.
Here is my codes on aspx file and no codes in cs file.
[Code]....
I have impelemented my own mvc pattern to my website , when I add desired type for my ObjectDataSource pointing to the controller class although GridView refreshes schema in designer just fine I get an error in runtime saying : "No parameterless constructor defined for this object." which is self explaining but I wonder why does it happening because I've used this pattern once and didn't have that issue , here is the bit of code that is causing this issue , what to do to keep my mvc and make it work :
[Code]....
I have a usercontrol which implements iwebpart and this is loaded into a webpart by adding it to the webpartmanager on the page. But i'm getting the error message "No parameterless constructor defined for this object." and i cannot find out what i'm doing wrong. The control is loaded into the webpart by:
_childControl = Page.LoadControl(_userControlVirtualPath)
I've created a web service , which can a method to set the user credential using Microsoft.Web.Services3.WebServicesClientProtocol. The sample code is :
<WebMethod()> _
Public Sub ClientCredential1(Of TSecurityToken As SecurityToken)_
(ByVal UserCred As Microsoft.Web.Services3.Security.Tokens.UsernameToken)
[code]....
When I run the web service it gives this error: "Microsoft.Web.Services3.Security.Tokens.UsernameToken cannot be serialized because it does not have a parameterless constructor."
i am taking data from two tables so i created one class and i constructed with two tables like this..
[Code]....
my edit post method is:
[Code]....
if i put PublisherViewModel in post function edit (ByVal aintEntityId As Integer, ByVal model As PublisherViewModel) As ActionResult. i am getting this error when post edit function called. No parameterless constructor defined for this object.
all I am using the first mvc tutorial to help make this application. I keep having an issue where this error occurs:
System.Data.Edm.EdmEntityType:
: EntityType 'ITmainDB' has no key defined. Define the key for this EntityType.
System.Data.Edm.EdmEntitySet: EntityType: The EntitySet LawmMarketOrders is based on type ITmainDB that has no keys defined.
The tutorial video works fine. But when I create this application it creates the above error.
Below is my Models data for the view:
namespace
LawnMarketOrders.Models
{[code]....
I am trying to run the 15 minutes movies MVC application but I got the following error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
If application is started without debugging - it runs smoothly, when I press F5 I get: "Unable to start debugging on the web server. Could not start ASP.NET debugging. More information may be available by starting the project without debugging. Click Help for more information"I noticed that problems are caused by URL Rewrite section in web.config:
<rewrite>
<rules>
<clear />
<rule name="LowerCaseRule" stopProcessing="true">
<match url="[A-Z]" ignoreCase="false" />
when I comment it out - I can start debugging. Also debugging works on VS's built-in web server.I'm running Win7 64 bit, VS 2010, application's framework is 4.0, in IIS application has ASP.NET 4.0 Intergrated pool set
when we declared as static then we will not create the object to call the static method. then my doubt is how is call the static constructor after creating the object?can you explain cleary?
View 1 Replies[Code]....
View 1 RepliesThe problem is in the crv.js, at
Sys.Application.notifyScriptLoaded();
when I try to open a report is shows Microsoft JScript runtime error: 'Sys.Application' is null or not an object
If I click Ignore or Continue, it's show the report properly, but when I deploy it to the development server it does not work.
At this time I am trying to open a simple report with the date and page number.
there is a CrystalReportViewer at the Default.aspx page.
the code is
[Code]....
am having a class which contains user defined data type property. I have created an instance of that class. When I bind that object of that class to DetailsView it is showing all properties except user defined data type property. Here is the sample code.
public class Customer
public string CustomerName { get; set; }
public int Age { get; set; }
public Address CustomerAddress { get; set; }
}
Address class looks like
public class Address
{
[code]...
So I've got a partial in my MVC project that creates a JSON array. I want to move this chuck of code from the top of the html page body to the bottom with the rest of the JS for speed reasons. That is to say I want to store the JSON created as a string in C# and access it on the Site.Master.
View 4 Repliesi'm having a gridview with textboxes and i'm allowing user to enter all the textboxes and when submit button is clicked, I'm constructing the Object and adding all the rows to LIST class.,After that i'm putting that LIST elements in a session. Everything is fine, But when i try to cast the session object to LIST type and pass it to XML serialization, I cannot see the elements in the list and it is showing LIST as NULL. I can see the generated XML string with ROOT and my classname as attributes without no data.
Here is the below code:
[Code]....
When I get an Object Ref error, it can sometimes be a real pain to find out which variable is causing the error (when you can't debug). Is there a way for this error to throw the classname that isn't assigned?
View 2 RepliesI used MicrosoftReportview in my project , The reports are avalable in project folderWhen I run web site in Server (not VS development server) . It give this type of error.Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: The element 'buildProviders' cannot be defined below the application level.
<add assembly="Infragistics2.WebUI.WebSpellChecker.v7.3, Version=7.3.20073.1043, Culture=neutral, PublicKeyToken=7DD5C3163F2CD0CB"/>
</assemblies>
<buildProviders>
<add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
[code]...
I have just deployed my ASP.NET/C# code to a sharepoint server and am getting this error when hoving over the menu:Menu_HoverRoot(this) Object ExpectedI have absolutely no idea what is causing it, but have seen other people with this problem, and it seems to be something with WebResource.axd.
View 1 Replies
