regarding the following issueCode
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs" Inherits="Ajax.Test" %>
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-
[code]...
I have grid view control that includes a dropdown control in a template field.I wish to execute some code when the value is changed in the dropdown list. Can't figure out how to capture this event though?
View 5 RepliesI have the following classes (pseudocode):
Item ( int Field1 )
ItemDetail : Item (int Field2, string field3)
If I set ItemDetail as the datasource for an asp.net gridview:
grid.DataSource = new List<ItemDetail>();
grid.DataBind();
Can I use Field1 in the GridView? If so, what is the correct DataBinder syntax? The following code blows up trying to cast to an Item:
<%# DataBinder.Eval(Container.DataItem, "Field1") %>
EDIT: And I'm a moron. I had copied the gridview and was calling a RowDataBound event handler for a different grid... Sorry to have wasted everyones time, but there is some good info here regardless if anyone has the same question. In the end, the public properties of the base class are binding correctly.
I am Confused about the TextReader Class,that how it fetched data ?And from where it fetches data?
Is this the base class of all other Reader type classes?
I can have a base class for views in an MVC project like this:
public class BaseViewPage : System.Web.Mvc.ViewPage
{
public string Something { get; set; }
}
And then in the ASPX I can do this:
<%@ Page Something="foo" Language="C#" Inherits="MyNamespace.BaseViewPage" %>
This works fine; the problem is when I try to do the same with the generic version:
public class BaseViewPage<TModel> : System.Web.Mvc.ViewPage<TModel> where TModel : class
{
public string Something { get; set; }
}
When I try to use this from the ASPX, like this:
<%@ Page Something="foo" Language="C#" Inherits="MyNamespace.BaseViewPage<SomeClass>" %>
I get the error message:
Error parsing attribute 'something': Type 'System.Web.Mvc.ViewPage' does not have a public property named 'something'.
Notice how it tries to use System.Web.Mvc.ViewPage rather than my BaseViewPage class. To make it more interesting, if I remove the "Something" attribute from the Page directive and put some code in the generic version of BaseViewPage (OnInit for example) the class is actually called / used / instantiated.
So, am I doing something wrong or is this a limitation.
I am in need to retrieve data from data base and display a field based on the drop down is selected
View 2 RepliesI am new in asp .net.I am not able to undestand why we call base class method when we
override methods/events.Like automatically visual studio will put base.OnInit() if you are overriding OnInit.
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
}
same is the case of Finalize. In derived we call base.Finalize() Is there any need of calling these base class methods ?
I am trying to populate a dropdown from a stored procedure that includes parameters. The parameters are programmatically defined variables. I have been working at this for hours, and scoured the internet for a tutorial. I have come up with the following solution below. However, it does not work. Its not pulling any data, and I am not even sure that the page is making it into the GetLast5Schedules_Selecting Event. There has to be a more efficient/less time consuming way to do this!
[Code]....
[Code]....
[Code]....
Since we can access the private data member of base class in the derived class with the help of friend function. How can we do the same in C# asp.net? I mean whats the alternative of friend function in C# asp.net
View 2 RepliesUsing the following Webservice definition using aClientArgs as a complex type:
[System.Web.Script.Services.ScriptService]
public class Controller : System.Web.Services.WebService {
[WebMethod]
public void save_client(aClientArgs client)
{
// Save client data
}
}
Then defining aClientArgs as a sub-class:
public class aArgs
{
public string id = null;
public string name = null;
}
public class aClientArgs : aArgs
{
public string address = null;
public string website = null;
}
Returns the following WSDL fragment for the save_client args:
<save_client xmlns="http://tempuri.org/">
<client>
<address>string</address>
<website>string</website>
</client>
</save_client>
When I'm expecting the following:
<save_client xmlns="http://tempuri.org/">
<client>
<id>string</id>
<name>string</name>
<address>string</address>
<website>string</website>
</client>
</save_client>
So it appears that the .NET WebService is not treating inherited properties as arguments/variables for purposes of a web service. How do I get .NET to also use the properties of the base class?
I'd like to inherit all my controllers from a custom base class that I write myself. I can change the line every time I add a new controller, but it would be nicer if I could somewhere specify the default value that gets set there. That way I wouldn't need to worry about forgetting this, and other people who get added to the project later on would have an easier time.
View 3 RepliesIn my MVC project, I am trying to setup a base product class that will be inherited by a more specific class later. Here is my scenario. I have a table called ProductBase, it contains three fields, BaseProductId(PK), CatalogNum, and ListPrice. Every product in the system will share these attributes. Next, I have a table called Shirt, with three fields BaseProductId(PK, FK), Color, and Size.
I then setup an Entity Data Model that pulled in both of these tables and created classes BaseProduct and Shirt. So, in my model, I want to do something like this:
[Code]....
The main problem I have with this, is that if I do any kind of condition on CatalogNum or ListPrice, then my performance goes to crap. One of the main things we will want to do is something like this:
[Code]....
This takes an enormous performance hit, and I suspect it is because the partial class above returns to the database for each shirt.
The other problem I have with this approach, is that I cannot force the properties for the Shirt. What if I make a change to the BaseProduct? What happens when I have multiple product types, will I have to repeat this code? I assume I will need to make a change with the entity data model, but I am unsure where to begin.
Have spent hours trying to create a Dynamic Data Field Template holding a DropDownList which is extended by the AJAX Cascading DropDown extension.Final form holds multiple cascading dropdown boxes. User selects Country (Land) then Postcodes, Counties (Provincie) are populated. Once postcode is selected then towns (Plaats) are populated. The problem I am now facing is that the viewstate for the dropdown lists is not being saved/restored after an insert action or custom validation error. So basically the dropdown lists are being reset to their default values.Some code (if missing parts, just ask and I will post them) - Don't mind the code structures etc... needs some refactoring :)Attribute I created:
[Code]....
KlantMetaData (=> Klant is Dutch for Customer ):
[Code]....
DynamicDropDownList Control I created:
[Code]....
Dynamic FieldTemplate created for inserts:
[Code]....
EntityTemplate I created:
[Code]....
Webservice methods created:
[Code]....
Code in masterpage:
[Code]....
When you create a webpage in ASP.net, the codebase inherits System.Web.UI.Page
Now when I extend the page object to check for SessionExpired for example, I create a new class and inherit from system.web.ui.page, and overwrite some functions.
The problem then is that on each page, I have to replace system.web.ui.page with my custompage class.
Is there a way to extend a class by adding methods or modifying its methods directly (e.g. add the sessionExpired check to System.Web.UI.Page) ?
I'm using .NET 2.0
I've created a base page type that derives from WebViewPage<T>.
I'm using a StructureMap implementation of IDependencyResolver to inject dependencies using setting injection
i.e.public ISomeService SomeService {get;set;}
Whilst this works fine on a normal view page, my services are not injected on a Layout page.
Are the base types for a standard view page and layout page the same?
If I call IDependencyResolver directly in the base page type then it works fine but I would prefer not to do this.
i want to disable validation controls on some conditions. how can i find that a control is inherited from "BaseValidator"?
note all validator controls are inherited from BaseValidator (+)
I want to add a custom base class for all of my web forms. I created a "App_code" folder in my asp.net web project and add a simple base page class like this:
namespace MySite.Web
{
// base page for all the pages that need localization
public class LocalizationPage : System.Web.UI.Page
{
protected override void InitializeCulture()
{
base.InitializeCulture();
}
}
}
And then I try to let asp.net web form to inherit from this base page. I have something like this:
using MySite.Web;
namespace MySite.Public
{
public partial class RegisterPage : LocalizationPage
{
}
}
Now I run into problem where Visual Studio doesn't recognize the LocalizationPage class I created. On the above code snippet, LocalizationPage is not highlighted as a class. And when I try to compile, I got the following error message:
Error 1 The type or namespace name 'LocalizationPage' could not be found (are you missing a using directive or an assembly reference?)
Is it possible for a Controller Base class to access a parameter from an action link and if so how do I access that parameter within my Base Controller?
Action Link:
<%=Url.Action("Area_1419", "Home", new { SectionId = 1})%>
Base Controller Class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Website.Models;
namespace Website.Controllers
{
public abstract class CategoriesController : Controller
{
public CategoriesDataContext _dataContext = new CategoriesDataContext();
public CategoriesDataContext DataContext
{
get { return _dataContext; }
}
public void SectionID()
{
int SectionID = Convert.ToInt32(Request.QueryString["SectionID"]);
ViewData["SectionID"] = SectionID;
}
public CategoriesController2()
{
//ViewData["Categories"] = from m in _dataContext.Categories where m.Area_ID == SectionID select m;
//ViewData["Categories"] = from c in DataContext.Categories select c;
}
}
}
HomeContoller
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Website.Models;
using Website.ActionFilters;
namespace Website.Controllers
{
[HandleError]
public class HomeController : CategoriesController
{
public ActionResult Index()
{
return View();
}
public ActionResult About(int? SectionID)
{
//ViewData["Message"] = SectionID;
return View();
}
public ActionResult Area_1419(int SectionID)
{
return View();
}
public ActionResult Admin()
{
return View();
}
}
}
I have an asp.net usercontrol (ascx) that inherits from an abstract class (that inherits from a UserControl). My Project is in a 3-tier architecture (DAL -> Bll -> UI/Views). Currently there are no class files in the UI layer (other than the code-behinds). Which layer should I add this abstract class to?
View 2 RepliesFirst off, I am wondering if this is possible. I read slight grumblings around the internet about this, but I was not entirely sure.
My scenario: I have a base chart class which has some methods which all charts should have.
public partial class BaseChart : System.Web.UI.UserControl
{
public BaseChart()
{
}
public void ToggleLegend()
{
Chart1.Legends[0].Enabled = !Chart1.Legends[0].Enabled;
}
}
There is also some mark-up for this BaseChart -- setting background colors, etc. All charts which inherit BaseChart should use this starting mark-up and be able to build upon it.
I would then like to do this:
public partial class HistoricalLineChart : BaseChart
{
public HistoricalLineChart()
: base()
{
public HistoricalLineChart(int reportID)
: base()
{
Chart1.Titles[0].Text = "Hello World";
}
}
where HistoricalLineChart is a web user control with no mark-up e.g. "HistoricalLineChart.ascx"
The problem is that Chart1 is undefined when in HistoricalLineChart's scope. Is there something that I am missing here?
I am successfully injecting base class properties with spring.net with just a class that inherits from a base abstract class. Lets say Class MyClass : MyBase, and I am successfully setting a property like this:
<object id="myInstantiableClass" type="myAssembly.MyClass myAssenbly" abstract="true">
<property name="MyBaseClassProperty" ref="anotherObjRef"></property> </object>
Where MyBaseClassProperty is a property on the base class. Now I have another abstract class between the old base class and the instantiable class and I am trying to set properties on both the abstract classes. So MyClass : MyNewBaseClass and MyNewBaseClass : MyBaseClass. I have an additional property on the new base class (MyNewBaseClassProperty) and I am trying to inject it like this:
<object id="myInstantiableClass" type="myAssembly.MyClass myAssenbly" abstract="true">
<property name="MyBaseClassProperty" ref="anotherObjRef"></property>
<property name="MyNewBaseClassProperty" ref="someOtherObjRef"></property>
</object>
The property on the old base class is being injected but the one on the new one is not - and I am not getting an error or anything (so I am pretty sure my config is good), that property is just null! I am on asp.net (not MVC) and the class MyClass is a user control (ascx).
I have the following PerformanceFactsheet.aspx.cs page class
public partial class PerformanceFactsheet : FactsheetBase
protected void Page_Load(object sender, EventArgs e)
// do stuff with the data extracted in FactsheetBase
divPerformance.Controls.Add(this.Data);
where FactsheetBase is defined as
public class FactsheetBase : System.Web.UI.Page
[code]...
In my controller have a FormViewModel which inherits from a domain class declared in dbml. In the constructor of the FormViewModel I want to do a shorthand assignment to the inherited class properties with the passed in object (ie thisPerson) without iterating through each property of the inherited class and assigning its value with corresponding property in the passing in object. Should I use super, base, this, or something else?
[code]....
I'm trying to have all my views inherit from a custom class so that I can add certain behaviour and values to all pages, but I'm having some issues. I tried subclassing System.Web.Mvc.WebViewPage but I'm forced to implement an Execute procedure that I don't know what it should do. Also, if I try to access the Context variable, I get a null reference (really weird). This leads me to think that I may have the wrong base class.
View 1 RepliesWe have a base class that all our webpages in our application inherit from. I have a static method in the base class which when called will clear values from the application cache. Now the issue is this method needs to be triggered from a source outside the current application. I there any way this can be accomplished without creating an aspx page that will call this base method on page load.
View 1 Replies