TextReader Fetches Data - Base Class Of All Other Reader Type Classes?
May 10, 2010I 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?
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How To Make User Control Partial Classes Aware Of Controls Declared In The Base Class
Mar 5, 2010Do we have to do something special to have ASP.NET partial classes aware of controls that are declared in our user control's base classes? The partial classes keep generating declarations for controls in the base class which mean the controls in the base class get hidden and are null.
View 1 RepliesC# - Can Base Classes See The Protected Fields Of Derived Classes
Aug 11, 2010I don't know if this has to do with how FindControl works or how scope works. But my base class is having a hard time seeing the fields of child classes. Currently I'm planning have the derived class set a property in the base class, but there are a lot of derived classes, so that isn't a very attractive solution.
[code]....
AJAX :: The Base Class Includes The Field 'DropDownExtender1', But Its Type (ControlToolkit.DropDown?
Feb 10, 2010regarding 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]...
MVC Generic Base View Class / Error Parsing Attribute 'something': Type 'System.Web.Mvc.ViewPage'
Feb 5, 2010I 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.
C# - How To Access A Private Data Members Of Base Class In The Derived Class
Aug 20, 2010Since 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 RepliesCall Always Base Class Method Like Base.OnInit()?
Jun 29, 2010I 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 ?
C# - Class Structure With LINQ, Partial Classes, And Abstract Classes
May 17, 2010I am following the Nerd Dinner tutorial as I'm learning ASP.NET MVC, and I am currently on Step 3: Building the Model. One part of this section discusses how to integrate validation and business rule logic with the model classes. All this makes perfect sense. However, in the case of this source code, the author only validates one class: Dinner.
What I am wondering is, say I have multiple classes that need validation (Dinner, Guest, etc). It doesn't seem smart to me to repeatedly write these two methods in the partial class:
[code]....
This doesn't "feel" right, but I wanted to check with SO to get opinions of individuals smarter than me on this. I also tested it out, and it seems that the partial keyword on the OnValidate method is causing problems (understandably so). This doesn't seem possible to fix (but I could very well be wrong).
ADO.NET :: Partial Declarations Of 'Shirt' Must Not Specify Different Base Classes?
Dec 15, 2010I 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 to classes BaseProduct and Shirt.
So, in my model, I want to do something like this:
[Code]....
The 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?
Architecture :: Two Different Base Classes Sharing Some Of The Same Code?
Mar 21, 2011I got loads of website, that share one of two baseclasses. I need the two baseclasses to be able to share part of the same code. I dont want to have to duplicate the shared code per baseclass.
so.. I got a page.aspx that inherits the baseclass and that inhertis 'sub' baseclass that inherits the web.ui.page class. So far so good :-)
In my baseclass I got a Public (at the top of the class not in any method- not sure of the proper term) Varable that is constructed from a structure in the BO class.
it Public PageDetails AS CoreDomainSetupBO.GetStartUpDetails = {database method}
I need the pagedetails to be available in the sub baseclass but it cant be defined there as the page details value is defined differently in the different base classes.
I hope that makes sense, I need to sub base class to be able to use a property that is defined at baseclass level.
Web Forms :: VB.NET - Import Statements And Base Classes?
Aug 19, 2010I have a BasePage class that all of my content pages inherit from. In my BasePage, I have many Import Statements. It seems as though they carry over into the derived class as one would expect. However, if you were to try and access code in the client aspx design page, as you would in the code-behind, you run into problems.
For instance, in my BasePage i have a Public Enum named ThemedSites. It's just an enumerator that lists the 5 different themes my site could be skinned as. I, at times, need to do different things in code, and in design, depending on what theme I'm currently in. I have a Public Property named CurrentSite (might have been more appropriate to say CurrentTheme, but that's besides the point). CurrentSite's return type is ThemedSites. So in code, one would say something like:
[Code]....
This works great in any page that inherits the BasePage class. This falters when that very same logic is used in the design page like:
[Code]....
Now, it works if you fully qualify both sides of the condition, but that's not my question. My question is: why isn't the Imported NameSpace in the BasePage recognized in the client-side server tag, as one would think it would be, according to how it IS recognized in the server-side code-behind?
C# - Webservice Complex Types And Class Inheritance - Use The Properties Of The Base Class?
Mar 13, 2010Using 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?
Mvc - Can Set A Custom Class As The Default Base Class For Controllers In MVC3
Feb 15, 2011I'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 RepliesMVC :: Trying To Setup A Base Product Class That Will Be Inherited By A More Specific Class Later?
Dec 16, 2010In 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.
C# - Mapping NHibernate Many-to-one Relationships From Abstract Base Classes To Union-subclasses?
Nov 19, 2010I am having a problem mapping a many-to-one relationship from an abstract base class mapping to a concrete union-subclass. Example:
public abstract class Entity
{
public virtual Guid ID {get; set;}
public virtual string Name {get;set;}
public virtual User OwnerUser {get; set;}
}
public class User : Entity
{
public virtual string UserName {get; set;}
}
I have a base abstract class for all of my database objects. I am mapping these classes with the Entity class as the abstract mapping class and the User as a union-subclass. When creating the configuration object, no errors are thrown and the Schema exports just fine. However, the field to the OwnerUser just won't show up in the database for all of the concrete classes. Here is an example of how the mapping looks
<class entity-name="Entity" name="Entity" abstract="true">
<id name="ID" type="guid">
<generator class="guid.comb"/>
</id>
<property name="Name" />
<many-to-one name="OwnerUser" column="ID" entity-name="User" />........
I am also using an Oracle XE instance as the database backend. If this isn't enough information to properly answer the question, let me know and I will add what I can.
List All Classes In Application (Including Class In App_Code And Partial Class(aspx Pages And Asmx User Controls)?
Nov 15, 2010Is there any way to list all the class in my ASP.Net application(Including class in App_Code and Partial Class(aspx pages and asmx user controls)
View 3 RepliesControls :: Adobe Reader Could Not Open PDF Because It Is Not A Supported File Type
Dec 10, 2012I am using the code from: [URL] ....
Everything seems to work, expect when I try to open the PDF file Adobe Reader says:
"Adobe reader could not open 'filename.pdf' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded)."
I tried opening it in Adobe Photoshop and was not able to there either.
C# - Extending The Base Class?
Mar 5, 2010When 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
MVC :: Dependency Injection In A LayoutPage Base Type?
Dec 17, 2010I'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.
How To Find If A Control Inherited From A Base Type
Mar 26, 2011i 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 (+)
Add A Custom Base Class For Web Forms?
Jan 12, 2010I 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?)
Base Class Access A Parameter?
Feb 15, 2010Is 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();
}
}
}
ADO.NET :: Can't Get Reader.hasrows And Reader.read To Work Together In Code Behind
Feb 22, 2011I have some code in my vb.net code behind that queries a database, and if there is data, outputs it from the codebehind to a datalist on my asp.net page. In addition to sending the data to the datalist on the page, I need to take the value from "mbillaty" that is returned from the sql query, and have that value be the selected value for a drop down box also on the page. I can get either the datalist to fill, or the selected value for the dropdown box to be selected depending upon which bit of code I place before the other (ARGH), but I can't get them to both work together on the page. What am I doing wrong?
[Code]....
C# - What Layer Does A UserControl's Base Class Belong
Aug 28, 2010I 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 RepliesC# - Inheriting From A System.Web.UI.UserControl Base Class?
Feb 28, 2011First 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?
