Create more than 1 set of controls in runtime.

According to wikipedia, CAPTCHA ("Completely Automated Public Turing test to tell Computers and Humans Apart") is a challenge response test which is used to check that if the user is human or not. CAPTCHA is used exclusively in applications where the user input is required. These applications include Blogs, Forums and Portals. In this article I will demonstrate how to create a simple webpage that uses CAPTCHA functionality.

User Controls are great in ASP.NET. They let us divide the page into small sections. You can easily use User Controls on a ASP.NET page by simply dragging and dropping the control from the solution explorer. Sometimes we need to load the User Control dynamically. In this small article we will learn how to load the User Control dynamically.

CSS (Cascading Style Sheets) provides easy maintenance for the look and feel of the website. Sometimes we need to set the style of lot of controls dynamically using style sheet. In this article I will show how you can change the style sheet of the dynamically created label controls.

Create Navigation in asp.net web application. Create Navigation in asp.net

In one of our pages we are using this bit of code to check if something is null and passing in a 0 instead. This works great for this page, but this was done by another person and thye are no longer here.. so i'd like to take that idea and create something similar but return a empty string or blank space, the reason is that i have a page where you make a selection from a gridview and onselect that rows data is passed into some textboxes.. well at the moment, if you select a row and one of the columns is blank, the textbox is being populated anyway with this   so i would like to make sure that if there is nothing, that the textboxes are left blank.. since there is potential for having alot of textboxes, i would rather create a method that can do the checking instead of doing if condition for each parameter. does that make sense? If so any suggestions would be great. and thanks you

        //CONVERTS NULL VALUES TO ZERO
        protected string valid(OleDbDataReader myreader, int stval)
        {
            object val = myreader[stval];
            if (val != DBNull.Value)
                return val.ToString();
            else
                return Convert.ToString(0);
        }
        //END

 

 Hi all,

I am creating a web site that provide coupon for it's registered member. I want to set up barcoad for each coupon that the member printed. How can i create barcode and Print them in a html page that is used as my coupon page.

Is anybody can give me solution for that???? Please help me, its argent.

Bye

With regards

Sadequzzaman Monoj

Bangladesh

I have some global variables declared and want to access them in subrorutines using the For statement. 

For example, I want to use the following to place values in the global variables , i.e, dblcell1, dblcell2, dblcell3, etc. 

Dim m As Integer
			For m = 3 To 11
				If e.Row.Cells(m).Text <> " " Then
					dblCell & m = e.row.cells(m).text)

				End If
			Next

I know that I can't use the "dblCell & M".  It is just to show the objective. It is where I get an error.

 

Thanks
 

 

Hard to describe be here goes.

Currently I have this in the aspx page

<% = new BuildFormField() { FieldName = "FirstName" }%>

And the simplified object

Class BuildFormField(){

   return GetFieldAttributes("FirstName") //calls a linq query based on the field name to get all the attributes of the field ie size/class and builds the html string.

}

The problem is, I will have many of these and it queries the database every time. What I would like to do is build a general dataset once and query that result set for each field.

I can't figure out where I should setup the initial query. Obviously don't want to put it in the aspx page or the controller and I can't figure out how to create a class that would only get called once that I could use again inside the BuildFormField Class.

Hope that makes sense. Yea, a bit unusual of a way to create form fields, but there is good reasons.

 

Thanks ahead of time.

Hello,

I am facing this error 

Microsoft JScript runtime error: Sys.ArgumentException: Value must not be null for Controls and Behaviors.

Parameter name: element

while using Ajaxtoolkit ModelPopupextender with listview, actually I am retriving image from database to the listview in VS 2008. 

Can anyone please help me out of this..

I have recently upgraded from VS 2008 to VS 2010 and the conversion process completed successfully.  However, when viewing my design view for all aspx pages, any control i had in there is displayed with the message "Error Creating Control - Object Reference not set to instance of an Object".  If i even attempt to create a simple new button or textbox from the toolbox, the control automatically comes back with that error.  However, in runtime, my controls are all displayed and functioning correctly.

I have seen some posts regarding session state and checking that Context is not null in the OnInIt override method, but I am no using any OnInIt override methods in any of my code behinds.  It pretty standard with usually only page loads.

This is creating a tough time developing because it is not using intellisense when i am looking for events and other actions on the controls.  Also, Javascript does not appear to be functioning the same  since it doesnt seem to be using the FindControl method correctly (Probably because the page is building out the control).

This is very frustrating and i've spent two days on this, so any help would be appreciated.

Thanks!