I'm coming straight from Classic ASP and need help with understanding how to use code behind.  At the moment, I'm working with a repeater controls on several pages.  I'm stuck on every page with trying to pass information to and from the code behind.  On one page I need to display different text depending on the value of a database field, if it's true or false.  On another, I'm trying to see if a file exists, and to display a graphic if it does.  In each case, I can solve the problem if I can read and set a label's text from the code behind function or sub. 

The tutorial, or if you can recomend more than one, at least one tutorial must be real basic. 

Thanks!

Diane

1) ASP.NET Unleashed VERY good

2) there is a lot of help , tutorials here:
http://quickstarts.asp.net/QuickStartv20/aspnet/Default.aspx

3) and buy member ship at http://www.learnvisualstudio.net/ - they have tons of very good videos for everyone. I have lifetime membership with them for few years now & i always find something interseting there

Diane:

 Are you using Visual Web Developer 2005 Express Edition to build your code?

The reason I ask, I started out writing code from examples, and people here steered me to VWD 2005 EE.  I find it very similar to Dreamweaver, and I like it because you can work with the code if you like, but with things like textboxes and buttons it is convenient to drag and drop.

The answer above covers your question for finding a tutorial.  If there is something you want to do specifically to get started with code behind, feel free to ask.  I think that is a question many new people coming here would want to see.

-Larry

Thank you Tom, Larry.

I'm using Visual Studion 2005 Enterprise, the 90 day evaluation edition.  I plan on buying it when the evaluation period is up.  I'll be wting VB apps as well, so I should probablt get used to using it.

I do have a lifetime membership to LearnVisualStudio.net.  Looks like I'll have to back and take a look at what they have.  I've also bookmarked and have been looking at http://quickstarts.asp.net/QuickStartv20/aspnet/Default.aspx.  The focus still seems to be on the controls.  There's a lot to know about functions, subs, passing data between the code and the controls, etc.  I was hoping there was a good explanation for beginners somewhere that focuses on these topics.

Diane

Thank you.  Who publishes. it?

Diane

Mainship:

 On one page I need to display different text depending on the value of a database field, if it's true or false.

For this one, would that be that you have built a database with a series of fields, and you want to print out a list that has the first and last name of every person who has a yes value (or true) for a given category?

 -Larry

Not exactly.  I'm printing out the names and other information including a date for everyone who satisfies a particular condition.  That part is handled in the select statement.  One of the fields I'm printing, NewAd is a date.  Another field, ReNewAd in a Boolean.  If ReNewAd is true, I want to print "Change to " before printing the date in the NewAd field.  If RenewAd is false, nothing is printed in front of the date.

So new ads look like "Ad Posted on 1/7/2007" but modified ads look like
"Change to Ad Posted on 1/7/2007"

DIane

Have you tried any work with the following items in the toolbox: SqlDataSource, Gridview?

I'm not sure where you are at with respect to the SQL part of it (or what database you are using.)  I'm sort of taking this on as a challenge to see if I can do it.  Have you had a chance to look at Bob Tabor's video's yet?  T'hat's where I learned about working with the above mentioned items in the toolbox of VWD 2005 EE.

-Larry

I'm using the SqlDataSource, but not the Gridview yet.  I am planning on it though.

Diane

here is link :

http://www.amazon.com/ASP-NET-2-0-Unleashed-Stephen-Walther/dp/0672328232/sr=1-1/qid=1168746825/ref=pd_bbs_sr_1/104-8880586-2018367?ie=UTF8&s=books

it is very easy. in code behind:

Public Function IsNewAd(ByVal ReNewAd As Boolean) As String

In HTML code :

sorry i found error , change

If stan = True

to

If ReNewAd = True

Tom,

I solved the specific problem I had with ReNewAd.  However, that involved the code behind for a repeater control.  It went on the code behind for the page the control was on, and with a couple of clicks, the sub was dropped in for me.  The coding inside was more of a challenge, but with a lot of help, I now have that working.

What I need to do now is different.  I have several places in the site where I need to send an email.  I want to send the email addresses (to and from), the subject and body as strings to a sub, and have the sub generate the email.  Can I dd this sub to the code behind of the Master Page?  Where?  Should it be in the App_Code folder?  How?  None of the options to select from seems appropriate, for instance this isn't a class.  Hos do I call the sub from each of the pages I need to send email from?

Is there a good overview of this anywhere? 

Diane

1) info how to sen mail here :
http://www.systemnetmail.com/

2) Because you have few places in your app. where you need send mial , you right you shoul place code in App_code folder - that way you will be able to reuse same code for many pages. I could send you code but i think you should take a look at this (it is very, very good tutorial & and will help you understand how all this is working ) so i guess it will be better for you :

http://www.asp.net/learn/dataaccess/default.aspx?tabid=63 - it shows how to use data acces layer, business logic layer - you will love it. You should read all tutorials (BTW i belive the one you need now is BLL )

 Hope this will help you

Wow, that's a lot of information!  Thank you.  I want to implement DAL and BLL in this project, but don't know how.  I had bookmarked some links, but it looks like what you sent me will answer most, if not all of my questions.  I'm at a good point in the project to start really getting into the database coding, so I'm going to go make a pot of herbal tea, then settle in to do some reading.

You're right, learning how to do what I need is better than being given the code.  I would have used the code to try to understand it, then would have asked where I can find this kind of information. 

I'm sure I'll be back with more questions.  But at least I'll have a better understanding of what I'm trying to do.  Thanks again!

Diane

The page you sent me to is great.  There's a lot of information on things I had questions about.  In a few minutes I'm going to creat my first Data Access Layers for some pages that need to display data, each using a repeater control.  I already have a couple of these pages working by accessing the database directly.  Believe it or not, I'm excited about being able to add a DAL!  I feel like I'm closer to playing with the big boys!

But I don't understand how this helps me send email.  The email page you sent me to is also a great resource.  I'm already able to send an email message, but only the most basic kind.  This page goes way beyond that!

But I'm sending the email from within the form.  What I want to do is create 4 strings from within the form: sendTo, sendFrom, sendSubject and sendBody, then send these four strings to a function or sub that will handle actually sending the email.  I'm able to create the four strings with no problem.   Where do I create the function or sub, and how do I call it?  Can I put it in the Master page code behind file?  Do I put it in an inlude file?  Creating a class has been suggested, isn't that overkill?

Diane

Tom, never mind about the email.  I did try to create a class for it.  It was easy, I can add to it as needed, and I decided I like classes!

So now I'm working on adding a DAL.  I'm probably starting with the wrong page!  This page uses a repeater to display the names of everyone who joined or whose ad has been updated within the past 60 days.  The SqlDataSource is:

This page is currently working, yet when creating thre DAL, the select string isn't being accepted.  I changed it to

"SELECT [ReNewAd], [Male or Female], [File2], [PHOTO], [First Name], [Last Name], [City], [State], [NewAd] FROM PrisonMembers Where ('NewAd' IS NOT NULL AND (DateDiff(dd, [NewAd], @Today') <= 60)) order by [NewAd] Desc"

But it really doesn't like the <= signs.  Can I use the DateDiff function in the select string?  How?

Diane

Huh? 

I'm looking for records where NewAd is not null and the date in NewAd is within the past 60 days.  What do you mean by 'working command'?   Is @Today a standard parameter?  Is there a good article or tutorial on this somewhere?  How do I use it to find records less than 60 days old?

I tried to create a DAL for one of the simpler pages.  I'm about to test it.  If I can get it working, today will have been a GOOD day!

Diane