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Public Variable Creation Question

Posted By:      Posted Date: September 02, 2010    Points: 0   Category :ASP.Net
Hello, I was wondering if there is a way to declare a variable that can be used throughout a page, rather than just in a sub, er private class.  I'm in a situation where I can use session("variable") to set a session variable, but in order to access that I have to trigger a postback. 

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public web methods...how to make private? Security question


I understand how to set security for a ASP.NET web page, how to encrypt a Silverlight page, and a WCF application, but my question goes to this:  given a web method, which by definition must be public, how do you keep people from accessing it outside of your client program?

If your program (client) is the only way to access this web method, then there's no problem.  But it is impossible to make a web method private--it won't compile--so how to keep people from using it?  The only thing I can think of is that if you call your web method by an obscure sounding name, it's likely nobody will guess the URL, and if you set your server so it cannot be searched (dir *.*) by the public, it's unlikely anybody will ever guess the name of the web method.  But this is hardly 100% secure.  And what if you call your web method "DoWork", which is the default OperationContract name in Visual Studio?

What am I missing?



//what I have in mind

public interface IService1
        string DoWork();


public string DoWork()
//secret stuff in here
string SecretStuff = "S

MVC Validation Pattern Question, Especially for Variable Length Lists and Conditional Validation


I've spent a lot of time exploring the various patterns of MVC validation. In particular, I am interesting in learning best-practice for validating a view which posts an enumerable collection back to the controller. One approach that is appealing involves posting the form via Ajax to check validation (http://jvance.com/blog/2010/02/20/MakingAnAjaxFormWithJQueryInASPdotNETMVC.xhtml). Obviously, the negative is that this is not true client-side validation since there is a "hidden" server round-trip, but the effect is comparable, and obviously client-side validation alone will never stand--server-side always needs to be done as well.

The CodePlex repository for this demo: http://mvcajaxvalidation.codeplex.com/SourceControl/list/changesets

The main reason I started heading this route is because in the course of writing lots of custom data annotation model validators (think "RequiredIf" or "RequiredWhenContains") it became very evident that the wiring to the client-side gets complicated. I was mostly able to pull it off using the custom validators' GetClientValidationRules() plus jQuery validator extensions (.addMethod('requiredif'...), ho

question on passing variable to Ajax Extender Toolkit Slideshow


I need to create a slideshow that displays all the images in a folder that have filenames that match a specific criteria.  The criteria is based on a querystring.  Is there a way to get a the querystring into the slideshow's webservice?  If not, does anyone have any suggestions?  I've been looking and looking but everything I've seen has one or more things that I need that it can't do.

Question about Variable value


Hi Experts,

I was wondering what the "value" column in a variable does. For example if i set the value to 14 instead of the default "0" what difference does it make and how does it impact the variable?


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.

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?


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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"

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                      AllowSorting="True" PageSize="5"  >

                 <RowStyle CssClass="odd" />


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Some basic MVC question

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In MVC I can't find this option.

  1. What is the basic DATA MODEL for working with SQL DB.

I mean with no any framework (entity framework, Sub sonic, Link to SQL etc')

I look for basic application that works with data but with no fw.

  1. What is the popular DB framework that working with data.
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C# Soup To Nuts  (the best series ever)


I watch some of the MVC video, seems that the music store is good but I have to wait to the other part.

Does any one know and recommend   a Microsoft MVC tutorial?





Need help regarding C# / AJAX Dynamic Controls creation


radiobuttons is assigned before page init.. 

public partial class Default : System.Web.UI.Page
//Assign values as a specific Dynamic WebControl Creation.
List<RadioButton> radioButtons = new List<RadioButton>();
List<CheckBox> checkBoxes = new List<CheckBox>();

Then I created a class that would dynamically create a table containing the available flights depending on session.. (See CallPageLoad())

The placeholder and button is inside the UpdatePanel...

on the button inside the update panel, (btnSelect)

i have this code which works... 

protected void btnSelect_Click(object sender, EventArgs e)

Label1.Text = Convert.ToString(radioButtons.Count);

It detects the number of radiobuttons that were dynamically created...

But when I use the following code inside the BtnSelectClick event...

//PLS HELP.......
foreach (RadioButton button in radioButtons)
if (button.Checked == true)
Label1.Text = "You select... " + button;



It does not work even though t

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"

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connection string question from a newbie


when publishing  in the webmatrix dialogue it asks for "destination connection string" for my "database.mdf"

I was not sure what it was so I pasted this from my web.config file :

Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\database.mdf;Integrated Security=True;User Instance=True

it all published ok, but wont run, so I guess it has somthing to do with this connection string or some kind of configuration issue.

My question is this, What should go in the field for "Destination connection string"

Security Question Answer Retrieval


I know there is a method built in for retrieving the encrypted password, but how do I retrieve the encrypted security answer?

What I want to do is have a member profile update screen that the end user can update their password and security question and answer. However, when they get to this page, I want to already be showing the security question (the easy part) and its answer (the not so easy part).

I have updated web.config with passwordFormat=Encrypted and have added a machineKey with the generator (forgot the link, but located on eggheadcafe somewhere).

I haven't done ANYTHING yet, since I already have a user store with hashed information. I wanted to get some functionality done before publishing, wiping the store and recreating users (only a couple developers).


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Hi Everyone,

I am running Windows 7 and I have gone into Control Panel and activated all of the IIS Functions.

The web application I am running was downloaded from the net (and has worked on other machines previously).  Once I downloaded it, I moved it into C:/inetpub/wwwroot/code/main.asp

I am a bit of a novice at this!  But I am hoping someone can point me in the right direction!


I get the following error when I try and run the web application through IE:

"An error occurred on the server when processing the URL. Please contact the system administrator. If you are the system administrator please click here to find out more about this error."

(When i click the "click here" button it just goes to the IIS site).


Appreciate any help I can get!




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Hi Everyone,

I have a strange problem:


There is an entity (Table) called "Filters" in my .edmx which has all my tables and stuff in it (to use it for LINQ queries)

I have created a class called "CustomFilters" which inherits "Filters". So now my cutom class has all the properties of the original "Filters" class (table) and 1 more additional property that i wanted which is a List of "CustomFilters":

List<CustomFilters> children = new List<CustomFilters>();

Now i get all my records into:

List<CustomFilters> theOriginalList = new List<CustomFilters>();

NOTE: first all records are tken into a List<Filters> and then these are added into List<CustomFilters> where List<CustomFilters> for children of that record is added, and then children of the child records, and so on......

so now, every record is an instance of CustomFilters which has a property named "children" which is a list again; and each child again has instanaces of "CustomFilters", and each instance again has children...and on and on and on.....

(basiacally its a data source for a treeview in my silverlight control)

every thing is good and working as expected.


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