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'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.
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 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 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.
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 Repliesam 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 RepliesWhen 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 am trying to attach static attachment with email but I am getting following error in my code: Type 'MailAttachment' is not defined.
My code is as follows:
asp.net Code:
[code]....
have been trying to get to grips with the entity framework using the music store tutorial as a base reworking it to fit an existing application i havei have a database table called AuthorDetail. I also have AuthorDetail.cs Model, and a View AuthorDetail.cshtml strongly-typed to the Model. It's also declared as DBSet in the Entities class :DbContext under the application Models namespace.
View 4 RepliesI try the example on the folow I get error on TYpe DataSet is not defined, I use net 1.1
[Code]....
I have error page settings in my web.config like:
<customErrors mode="RemoteOnly" defaultRedirect="ErrorDocs/500.htm">
<error statusCode="404" redirect="ErrorDocs/404.htm"/>
<error statusCode="403" redirect="ErrorDocs/403.htm"/>
</customErrors>
Is there a simple way to redirect to 404 page without typing its name? Ex: Response.Redirect(404 status coded page);Or is there a way to get default 404 location?
First of all, let me explain the situation, I know this is a bit complicated.
And I apologize for my poor English.I have created a dll library which contains the classes I created.I tested the library with Console Application and web site created with Visual Studio 2005,everything works fine.So I copied the dll to the "Bin" folder of a running ASP.NET 2.0 web site, added reference to the dll file, imported the namespace, then trying to initiate instances of objects in the dll.
But it's different situation on gridview.
<asp:GridView ID="Grid_Goster" runat="server" AutoGenerateColumns="False" CellPadding="4"
DataSourceID="SqlDataSource3" ForeColor="#333333" GridLines="None"
Height="144px" Width="316px">
<asp:SqlDataSource ID="SqlDataSource3" runat="server"
ConnectionString="<%$ ConnectionStrings:SqlServerCstr %>"
SelectCommand="SELECT * FROM [AVUKAT]"></asp:SqlDataSource>
And i get error like this: Both DataSource and DataSourceID are defined on 'Grid_Goster'. Remove one definition. 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: Both DataSource and DataSourceID are defined on 'Grid_Goster'. Remove one definition. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using And in my .cs file there is code like this.
SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
Grid_Goster.DataSource = dr;
Grid_Goster.Visible = true;
i think this code works correctly. How can i solve this DataSource and DataSourceID problem?
i have developed a simple form which have only one button and when user click on button then just server datetime will be shown by icallback. few days back it was working but now i saw it is stop working. i am running the program from VS2005 IDE. i just can not understand why it is not working. i am getting two error and the errors are 1) WebForm_DoCallback is not defined 2) WebForm_InitCallback is not defined please help me how to fix this error. here i am giving my code html ----- <%@ Page Language="C#" AutoEventWireup="true" CodeFile="BasicCallBack.aspx.cs" Inherits="BasicCallBack" %>
View 1 Repliesall 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]....
