Web Service Error ' It Does Not Have A Parameterless Constructor '?
Aug 7, 2010
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'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 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.
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:
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.
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 :
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:
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.
I developed a web service in VS2010 on my local machine, wrote a consumer of it also locally, and that all works.
I copied the dll and the asmx file to our server, and I am getting an error when I try to invoke it from a browser (also still on the server machine) to make sure it correctly exposes its web methods, but it is not, it is saying "Could not create type 'Service'". That error comes from this line:
Line 1: <%@ WebService Language="C#" CodeBehind="~/App_Code/WarrantyDuplicate.cs" Class="Service" %> There other web services in the same folder on the server that all work fine so I don't believe it's an IIS setup thing.
This is my first web service in C# and when I created it in VS I did think it odd that the code behind file went into App_Code (as you can see from the line in the asmx file) and is just named dot-cs rather than asmx-dot-cs. But since it worked fine locally, I wasn't sure that mattered.
I am keep getting an error that "Service Error : wbsTest failed" where wbsTest is my webservice.
The error comes up frequently enough for the user - normally reproducible within a minute or so of working with an application.
A bit of background: An user is a remote user accessing application hosted on our servers over https. He is software firewalled and his connection isn't the fastest but it is responsive enough. When errors do not present themselves, page loads are fairly quick.
We suspect that the difference in URI is causing the web service to deny the request with a 400 error. Is it possible to make HttpRequest send out an Authorization header that includes the full URI?
I have hosted a service in the IIS server, while consuming the service i am getting some error. I have mentioned the error code below.
Error code:
Server Error in '/' Application.
The type 'EchoTunnelService.EchoService', provided as the Service attribute value in the ServiceHost directive could not be found.
Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: The type 'EchoTunnelService.EchoService', provided as the Service attribute value in the ServiceHost directive could not be found.
Source Error: [Code]....
Version Information: Microsoft .NET Framework Version:2.0.50727.3607; ASP.NET Version:2.0.50727.3614
This is happening only in my system. when i do a build it just works fine but when i try to debug the service i am getting the follwoing error. please let me konw what would be theissue.
Microsoft.Practices.RecipeFramework.ActionExecutionException: An exception occurred during the binding of reference or execution of recipe DebugWCFService. Error was: Action DebugWebProject failed to execute: Value does not fall within the expected range.. You can remove the reference to this recipe through the Guidance Package Manager. ---> System.ArgumentException: Value does not fall within the expected range. at EnvDTE.Properties.Item(Object index) at Microsoft.Practices.RecipeFramework.Extensions.Actions.VisualStudio.DebugWebProjectAction.Execute() at Microsoft.Practices.RecipeFramework.Recipe.Microsoft.Practices.RecipeFramework.Services.IActionExecutionService.Execute(String actionName, Dictionary`2 inputValues) at Microsoft.Practices.RecipeFramework.Recipe.Microsoft.Practices.RecipeFramework.Services.IActionExecutionService.Execute(String actionName) at Microsoft.Practices.RecipeFramework.Recipe.Microsoft.Practices.RecipeFramework.Services.IActionCoordinationService.Run(Dictionary`2 declaredActions, XmlElement coordinationData) at Microsoft.Practices.RecipeFramework.Recipe.ExecuteActions(IDictionaryService readOnlyArguments, IDictionaryService arguments, ITypeResolutionService resolution) --- End of inner exception stack trace --- at Microsoft.Practices.RecipeFramework.Recipe.UndoExecutedActionsAndRethrow(Exception ex) at Microsoft.Practices.RecipeFramework.Recipe.ExecuteActions(IDictionaryService readOnlyArguments, IDictionaryService arguments, ITypeResolutionService resolution) at Microsoft.Practices.RecipeFramework.Recipe.Execute(Boolean allowSuspend) at Microsoft.Practices.RecipeFramework.GuidancePackage.Execute(String recipe, IAssetReference reference, IDictionary arguments) at Microsoft.Practices.RecipeFramework.GuidancePackage.Execute(IAssetReference reference) at Microsoft.Practices.RecipeFramework.RecipeReference.OnExecute() at Microsoft.Practices.RecipeFramework.AssetReference.Execute() at Microsoft.Practices.RecipeFramework.VisualStudio.RecipeMenuCommand.OnExec() at Microsoft.Practices.RecipeFramework.VisualStudio.AssetMenuCommand.Invoke()
We have created a new cname for our subdomain website. The new website is working properly with cname. We do have .net application inside the webiste which is not working with cname. For eg,1. http://servername/_folder1/app/mypage.aspx (Accessing .net application (App) website without cname)2. http://NewDomian.xxxx/app/mypage.aspx (Accessing .net application (App) website with cname)The first case is working perfectly, but when I access the second url, I got the following 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: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.Source Error:
I am confused about the constructor of ObjectContext
// Summary: // Initializes a new instance of the System.Data.Objects.ObjectContext class // with a given connection string and entity container name. // // Parameters: // connectionString: // The connection string, which also provides access to the metadata information. // // defaultContainerName: // The name of the default entity container. When the defaultContainerName is // set through this method, the property becomes read-only. protected ObjectContext(string connectionString, string defaultContainerName);
if a class has a private constructor then it cant be instantiated. so, if i dont want my class to be instantiated and still use it, then i can make it static. what is the use of a private constructor? Also its used in singleton class, except that, is there any othe use ? (Note : The reason i am excuding the singleton case above is because I dont understand why do we need a singleton at all ? when there is a static class availble.
Well...lI do not understand why when i drag-and-drop tables into a new DataClasses dbml it does not construct a default constructor specifying the connection string. I only have constructor with params like:
public DataClassesDataContext(string connection) : base(connection, mappingSource) { OnCreated(); }
I do need a default constructor for LinqDataSource..
I have the following constrcutors within a Model and I want to click the create button on a previous view and pass the projectID in and call the second Constructor so I have the projectID on this view. Do I need to change the routing in someway to call the constructor with the parameter? -
I'm using Microsoft Unity. I have an interface ICustomerService and its implementation CustomerService. I can register them for the Unity container using the following code:
If CustomerService has a certain parameter in its constructor (e.g. ISomeService1), I use the following code (I need to specify SomeService1):
container.RegisterType<ICustomerService, CustomerService>(new TransientLifetimeManager(), new InjectionConstructor(new SomeService1()));
No problems here. The problem appears when CustomerService class has two parameters (not one param as in the previous example) in its constructor (e.g. ISomeService1 and ISomeService2). It works fine when I'm using the following code: container.RegisterType(new TransientLifetimeManager(), new InjectionConstructor(new SomeService1(), new SomeService2()));The problem is that I do not want specify SomeService2() for the second parameter. I want to specify only first parameter - SomeService1(). But I get the error that I need to specify none or both of parameters. How can I specify only first parameter of constructor?
