Alternative For Static Method In Interface - Enforce Implementing Class-level Methods
Oct 28, 2010
I have a hierarchy in my website project as below:
[CustomControl1 - folder]
- CustomControl1.ascx
- CustomControl1.css
- CustomControl1.js
I load css and js files dynamicaly based on which controls are used on particular page. I am doing it by using following code:
[code]....
where AddLinks method adds HtmlLink controls to Page.Header with href attribute set to coresponding css and/or js file.
I would like to add Interface that would force new controls to have AddLinks method but it is impossible since it is a static method. Because my custom controls inherit from Control class I cannot use abstract class and/or virtual methods either. How can I achieve my goal?
View 1 Replies
Similar Messages:
Jun 30, 2010
I did some research after posting. All I found was simple examples for no-layer architectures, like connecting to a database from your aspx page, so, in a corporate environment, it is unnaceptable.
I need to call a server-side method (using ASP.NET Ajax) in a 3-layer architecture.
For example, my Default.aspx contains a method LoadProducts().
[Code]....
[Code]....
This cannot change. There is no way to convert Business and Data layers to static.
How can I call the LoadProducts() method using ASP.NET Ajax?
View 2 Replies
Apr 4, 2010
Can we declare a static method inside the Interface?If not means Why?
View 4 Replies
Dec 30, 2010
I want to update a log file(txt) everytime when methods in a an interface class are called? Is there any way to do this other than writing code in every method to create log?
View 3 Replies
Mar 26, 2011
I have a private static field in my Controller class in an MVC web application.
I have a static method in that controller that assigns some value to that static field, I want to apply lock on that static field until some other instance method in the controller uses the value stored in the static field and then releases it.
DETAILS:
I have a controller named BaseController having a static ClientId field as follows and two methods as follows:-
public static string ClientId = "";
static void OnClientConnected(string clientId, ref Dictionary<string, object> list)
{
list.Add("a", "b");
// I want the ClientId to be locked here, so that it can not be accessed by other requests coming to the server and wait for ClientId to be released:-
BaseController.clientId = clientId;
}
public ActionResult Handler()
{
if (something)
{
// use the static ClientId here
}
// Release the ClientId here, so it can now be used by other web requests coming to the server.
return View();
}
View 1 Replies
Jul 8, 2010
I'm building an n-tier application, with the web client and the class library separate. I'm also using the factory pattern of development, using interfaces to act as containers for different objects they are associated with. The problem I'm expreriencing is that I declared a public interface class in the class library and I can create an instance of it in in my aspx pages but whenever I declare it in my custom control code-side, i get an error, like so:
Error 20 The type or namespace name 'IContentMaker' could not be found (are you missing a using directive or an assembly reference?)
notge that I have inherited the class library namespace using the 'using' keyword just in case you are wondering. My code is like so:
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using TQO_Classes ; //importing the class library project
public partial class PageContentMgr : System.Web.UI.UserControl
{
private IContentMaker _data; //this line throws the error, it works fine on aspx pages
View 1 Replies
Nov 17, 2010
I have some confusion with singleton class, below are my some points:
1.Can singleton class have static method?,if yes then how we call that methods?
2.what is main difference between Static class and Singleton Class?
I have created my singleton class as follows:
[Code]....
In Above class structure I have created two method one is Static and second is non static, When I am trying to access Static Method it gives me compile time error.
How can I use static method of singleton class?
View 7 Replies
Feb 22, 2011
I hate to see the name of the class used as a string parameter like "FileDownloader" in the code, and I would like to use something like this FileDownloader.Name(), where FileDownloader is name of the class.
Only problem is that I can't find out how to do that without instantiating object or creating a static method...
Is there a way to get a class name in .net without having the object instance and without creating a static method that returns the name of the class?
View 3 Replies
Apr 27, 2016
I have a class and call class A method by creating class A object
unlike this call Class B method by using class B objectÂ
Code is here below
class A {
public void A1() {
Console.WriteLine("I am from Class A");
}
}
class B {
public void B1() {
Console.WriteLine("I am from Class B");
[Code] .....
View 1 Replies
Sep 16, 2010
I am beginner in web applications development. I started one little project and host it on source forge "https://homoco.svn.sourceforge.net/svnroot/homoco". And I started implementing authentication in this application to learn how it works. From my experience people never use out of the box things so I want to implement this stuff alone (like in real world projects). So some questions:
1) Is there any reason to use membership out of the box? To use database table schema, stored procedures etc. that tool generate for developer. I think that this lower control over code and I decided to implement it my self. I don't know if I am right.
2) Is my approach in this demo project good or bad (if someone have time I like to do just a little code review)? I created database based on business rules. Not using database schema that membership provider require. Extend "MembershipProvider" class to satisfy my needs. Implement queries to database myself.
3) Now, this question is a little wired but I have to ask it. If we make custom Membership Provider and do sql queries alone, implement all MembershipProvider class methods ourselves, and in application use Membership.blabla() why is this approach different from not extending MembershipProvider class and putting all this methods in some unique class and call its methods then? I hope that someone understand what I ask here.
I am sorry for three questions, but I really trying to find the best way to implement this feature in my demo project like it is a real world application.
View 3 Replies
Aug 16, 2010
I have an extension method as follows:
public static class PageExtensions
{
public static int GetUserId(this Page targetPage)
{
var user = Membership.GetUser(targetPage.User.Identity.Name);
return (int)user.ProviderUserKey;
}
}
Now in a page I need to use this method in a static WebMethod, so I have added another 'extension method' to PageExtensions:
public static int GetUserId()
{
return (int)Membership.GetUser(HttpContext.Current.User.Identity.Name).ProviderUserKey;
}
and I call it as follows in my WebMethod: PageExtensions.GetUserId()
View 1 Replies
Feb 8, 2010
for reasons beyond the scope of this discussion (say xcopy an aspx page to a directory, so that we dont have to get a new build out) , we would like to implement an interface in an aspx page.Say, if the page is myPage.aspx, it is usually your class in the codebehind mypage.aspx.cs which implements the interface. When I do something like this
<%@ Page Language="C#" AutoEventWireup="true" Inherits="ICustomInterface" %>
I get an error
Parser Error Message: 'ICustomInterface' is not allowed here because it does not extend class 'System.Web.UI.Page'.
How ever, when not specifying an Inherits attribute the page does not throw an error. So by default, when we do not specify an Inherits attribute, the page inherits from System.web.UI.Page ?
We are using VS2008 web application project and are not precompiling the aspx pages. We would like to intercept the request to this page in the HTTPModule (begin request) and if the request is to a page of type ICustomInterface we would like to process it differently.
View 1 Replies
Oct 20, 2010
We have a WebForms Control which requires that the ID of another Control implementing ITextControl is provided.What exception should we throw if there is no control with that ID or a control is found but it's not implementing the interface?
[code]...
Should we split it into two cases and throw one exception if there is no control with that ID, and another one if said control does not implement ITextControl?If so,which exceptions should we use then?
View 3 Replies
Feb 19, 2010
I am about to deploy an ASP .NET application (developed with LINQ-to-SQL). I have taken following precautions: Database access via user with limited access, however, since application is to access the sensitive data, I can't deprive this limited access user from it Database server is not exposed to external network - is hiding behind DMZ and all external ports are blocked I have done thorough security testing of the web-application; SQL Injections, rights management, illegal data access (via post/get data tempering) Application is operating on SSL
1 - I am using ASP .NET authorization API; any recommendation for avoiding session hijacking (in case someone some-how gets to know the session key). Is there are way to change the authentication cookie less prone to threats? Say like, changing it after every request? (I know I am get very conscious about this particular item)
2 - Data in the database is not encrypted. To make things ultra-secure, I am thinking about implementing transparent data encryption. Can someone share his/her experience or a link about implementing data level encryption with SQL Server 2008 along with pros-and-cons?
3 - Recommendation for storing connection string in web.config. Is using integrated security better then using encrypted database connection string?
View 3 Replies
Feb 28, 2011
I'm looking for a way to add 3 level product catalog to cart based on MVC musicstore sample:
root product categories
sub categories
products
Clicking in catalog item should show subitems with pictures.
Control is placed to Site.Master. It can be treeview in cart left side or horizontal menu in upper part of screen.
Data is read from database from controller.
How to implement this ? Which free control is best for this or is there sample code for this ?
View 23 Replies
Jan 25, 2010
want to make sure I am not assuming something foolish here, when implementing the singleton pattern in an ASP .Net web application the static variable scope is only for the current user session, right? If a second user is accessing the site it is a different memory scope...?
View 4 Replies
Jun 16, 2010
How to bind "OnDataBound" event of "DropDownList" in declarative syntax to a static method in some other class ?e.g<asp:DropDownList runat="server" id="d1" OnDataBound="SomeOtherClassThanThisPage.StaticMethod"></asp:DropDownList>
This will give the error, "Page does not contain a definition for SomeOtherClassThanThisPage. it like this or it be done in the Code Behind only ?
View 2 Replies
Nov 18, 2010
Actually I have done all my Biz(business layer) and DAL CRUD Opprations using static methodes
and I just send my error messages to my log table a sample of biz layer
public static bool Delete(Guid LogGroupID)
{
using (DAL.ChroXEntities db = new ChroX.DAL.ChroXEntities())
{
var q = (from lg in db.LogGroupSet
[code]...
so what should i do to propagate an user friendly error to my users?
View 1 Replies
Jan 29, 2010
When to use Abstract class and when to use Interface class.
View 10 Replies
Jan 27, 2011
I have a question about C Sharp ASP.NET:Is there a difference (in code speed, resources) between:public static variable declared in public static class MyGlobals in a 'Code File' template;and the variable declared in a normal 'Class File' template;I use this variable in 2 different Class Files and also in _Default Page codebehind cs file.In fact in my case I need about 20 global variables of type List<string>.
View 9 Replies
May 15, 2010
here is the code, where i am confused what to write in all the properties and functions of the base class stream?
I want to inherit abstract class Stream, but confused about what to write?
[Code]....
I could'nt understand how to define these Properties,Sub and Functions. How i start?
View 20 Replies
Sep 15, 2010
I write a simple static method in my web page. How can i access session["id"] into method? I dont have access.For example:
public static void myFunc()
{
Session["id"]= 100;
}
View 2 Replies
Nov 12, 2010
In ASP.NET, is there any reason not to make a set of functions that Add/Remove/Get from the Cache object Static?Get() - just gets the item, no reason not to be staticAdd(), Remove() - I've read that adding/deleting into the cache has it's own internal locking mechanism, so they can be static without me creating my own lock(){} wrapping.
View 1 Replies
Feb 4, 2011
I am developing a web application, which has Data Access Layer and this layer has only one class, in which all methods are static methods like static Insert, static Update, static Search. It has no properties. I am using these methods in my Bussiness Logic class for my users who are visiting my website.Now my question is : 1. Is it right to use static methods in this scenario ?2. What will happen if 10 users call Insert method at the same time ?
View 3 Replies
Oct 4, 2010
How to access the page controls in Static methods.
View 2 Replies
