.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

delcaring a variable in a class

Posted By:      Posted Date: May 22, 2011    Points: 0   Category :Windows Application


What is the difference between declaring variable in constructor and right below the class name. Examples:


public partial class MyClass1


int Numbers;
string FullName;
List<string> Employees = new List<string>();

The above is declaring in constructor. Example2:


public partial MyClass1

int Numbers;
string FullName;
List<string Employees = new List<string>();

// empty constructor or some other code here

//...class routines and properties


So, what are the differences declaring int Numbes, string FullName, List<string> Employees in both examples?


View Complete Post

More Related Resource Links

Can I use class members for data or do I need to use Variable?

I have a class derived from CodeActivity that creates some objects in its constructor which will be used by Execute. These objects are exposed as properties so I can fake them for unit tests. In a code review a colleague suggested that I might need to make all of those objects Variable<T> "for them to play nicely in WF (with all the threading etc. going on)", but wasn't sure on that. Do I need to make these Variable<T>? If not, when would I want to use Variable<T> in a CodeActivity?

Unable to Create Object Variable for Linq Data Class


For some unknown reason I suddenly am unable to create an object variable for a Linq Data Class. If I create a new project and try the process again with the same database everything works as advertized.

The code I am using is Dim db As New RoggDataContext  which gives me an error on the object variable "db": Overload resolution failed because no accessibility 'NEW'  accepts this number of arguments.

I have looked inside every file in the Web Project like the web config to check the connection string, gobal, and designer.vb looking for any errors whit no JOY.  I also tried to create a new form and code behind with a button and received the same error.

This is mind blowing because as I already stated, I can create a new Web Site and the problem goes away.

Any help is appreciated!



Designed not adding a new internal variable to the class

I am having a problem with using the Visual Studio Profession 2008 Designer.  When I add a control, it does not add a variable and (therefore) I immediately get compiler errors after I add the control.  I can drag a simple control from the toolbox and not make any modifications and the code will not compile.  I'm not sure what has happened as this used to work (I used to Designer to build this GUI previously).  The code is written in Managed C++.

Can I Assign class object to session variable?


Hi all, i have a class Emp and whether it is possible to save the object of this class in a session?

And after creating the session with object how can i store it in state service and how can i use the object from session??

thanks in advance...

Class to discover if a string is a legal variable name


Does a class exist to verify that a string contains a valid variable name. I am generating code based on user input and need to verify it.


ie: First character is [_a-Z], followed by up to 'n' [a-z0-9_] and is not a reserved word, now or in the future.

I think I could do it via reflection and compiling it, but that seems a bit heavy-handed.

I would also prefer if I could exclude legal names like 'var' and 'partial', 

Paul Cotter

Application variable or static class for global string?


I need to keep a global variable throughout the whole time the user is at my site, but do I use Application or a static class? The string variable should store a region name and my site makes a few changes depending on which region that has been set.

I read that Application was mainly for classic ASP, but I also read that a static class cannot be instantiated at runtime (e.g. when the user has logged in).

So, have I got something wrong here and which solution do I use?



Class Diagrams

Class diagrams show the static structure of the systems. Classes define the properties of the objects which belong to them. These include:

Attributes - (second container) the data properties of the classes including type, default value and constraints.

Creating a Simple Class in C#

The second article in the C# Object-Oriented Programming tutorial describes how classes are created in C# and how behaviour, in the form of publicly visible and private, hidden methods can be added. This demonstrates some of the uses of encapsulation

Static Class for Beginners

In general, the members of a class can be accessed by instance of that class when they are in public, but there comes a situation to access or call members of a class without an instance and this can be achieved by declaring them as static

Local variable scoping in C#

In my previous post, Compiler-generated scopes for local variable declarations, I briefly touched on the issue of multiple meanings applied to the same name. In this post, I'll aim to flush out the compiler's rules with regards to binding names in their local scopes.

Compiler-generated scopes for local variable declarations

I was tasked with understanding and fixing a bug on error reporting with foreach iteration variables the other day, and it got me thinking about local variable scoping rules in C# in general. First, the bug.

abstract away the source of the connection string using a class with a static property.

ASP.NET provides a configuration system we can use to keep our applications flexible at runtime. In this article we will examine some tips and best practices for using the configuration system for the best results.

The element of a web.config file is a place to store connection strings, server names, file paths, and other miscellaneous settings needed by an application to perform work. The items inside appSettings are items that need to be configurable depending upon the environment, for instance, any database connection strings will change as you move your application from a testing and staging server into production.

Let's abstract away the source of the connection string using a class with a static property.

MessageQueue Class

This sample demonstrates two way communications using message queuing between a device application and a desktop application. One application sends book order messages to a message queue and another application receives these book orders from the message queue and responds to the device queue that the orders have been processed.

Retrieving a variable from a previous page



I'm looking to have a search page where a user will select an item from a listview, then then taken to another page that wil display data based on their original selection.

A user will type in a string and be presented with a list of usernames that are like that string, when they select a user name who's profile they would like to view I would like the page that they're taken to, to be that users profile.

How would I transfer the variable from the search page to the profile page, and when I work on the profile page, how can I access that variable?


Embeb a variable number of videos


I need to provide some alternate content for my non-Flash users.

I have a directory of video files that is scanned using the DirectoryInfo() function, and I want to use the results to embed all files ending in ".mov" in QuickTime players on a web form.

How would you approach this? Right now I am using the count on the array of videos to determine how many times to repeat the embed code.  But this seems inelegant.

Is there a way to have a single QuickTime player.ascx control that gets duplicated according to the number of videos available for display?

How to take value of bound field of grid in a variable or in a textbox.


How to take value of bound field of grid in a variable or in a textbox.

 I m using this code in .aspx page for grid.

<asp:GridView ID="Grd_Mprocess" runat="server" AutoGenerateColumns="False"

                      Width="100%" AllowPaging="True"


                      AllowSorting="True" PageSize="5"  >

                 <RowStyle CssClass="odd" />


<asp:BoundField HeaderText="DOC_TYPE_PK" DataField="DOC_TYPE_PK"  Visible="true" >


  <asp:TemplateField HeaderText="DOC TYPE ID" Visible="true">  &nbs

Hidden variable has no value


I know I have a valid solution, but the js is telling me that the value in the hdnRecordSaved variable has no value!
Even when I specify in my function the following, it still tells me it has no value:
var myTextField = document.getElementById('hdnRecordSaved');

When I put the full value of the variable in (ctl00_ctl00_cphTopCenter_cphCenter_hdnRecordSaved.value), I get the correct contents back ("1"), which I set in my code behind. However, I would prefer to just put the short name in since the masterpages may change, etc. Unfortunately, I know I can get around this with VS2010, but we are using VS2008.

What am I doing wrong with the js naming conventions that can't give me the contents? Here is my below js.

<asp:Panel ID="pnlMapFields" runat="server" ScrollBars="Both" Height="430px">

<telerik:RadTreeView ID="RadTreeView1" runat="server" DataTextField="Description"

DataFieldParentID="MapFieldparentID" DataF

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend