ASP.NET

Re: Using Master Page as the DB reader which implements the reading on all child pages

22-Apr-09 9:59

Use the Mater Page's Page_Init event to run the code. That event fires before the child pages load event.

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shabya23-Apr-09 7:07

shabya

23-Apr-09 7:07

ok , tnx

ViewState storing custom class

Fayu22-Apr-09 8:14

22-Apr-09 8:14

How do I store a custom object in a ViewState. I know that viewstates do not support XmlSerialization. I currently have a class that is using XmlSerialization and all hell is breaking lose when trying to set a viewstate entry to that value.

ToddHileHoffer22-Apr-09 9:58

22-Apr-09 9:58

ViewState is actually a name / value collection. You can't store a class in ViewState.

You can store a serializable object in Session though.

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Fayu22-Apr-09 10:08

22-Apr-09 10:08

You can store an object inside a viewstate as long as it is BinaryFormat-able.

ToddHileHoffer22-Apr-09 10:19

22-Apr-09 10:19

So is that what you are doing?

In my 8 years of doing asp.net I have never once tried to store an object in viewstate. Can ask why you want to store an object in viewstate?

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Fayu22-Apr-09 14:20

22-Apr-09 14:20

I am trying to store the object in a control. What do you suggest?

ToddHileHoffer22-Apr-09 15:16

22-Apr-09 15:16

Well, if you have a base page class or a master page. Store the object in session.

The reason for the base page class or master page is that you can check what aspx page is being loaded and set the session object to null if it is no longer needed. So it will behave like viewstate but you won't have all that data traveling back and forth to the client.

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DoctorMick22-Apr-09 21:51

DoctorMick

22-Apr-09 21:51

In the absence of a master page or base class you can also use the global.asax to manage the session objects.

ToddHileHoffer23-Apr-09 2:13

23-Apr-09 2:13

Thanks for the tip, I never thought of that. Does the Application_BeginRequest event fire on every post back?

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DoctorMick23-Apr-09 2:30

DoctorMick

23-Apr-09 2:30

I think so but the way I usually do it is to wire up an event to page PreInit in Application_PreRequestHandlerExecute. It might not be the best way to do it (so I'm open to suggestions) but it works a treat.

Fayu23-Apr-09 6:18

23-Apr-09 6:18

I wanted to avoid using session vars, but I guess that is my only option at the moment. Thanks!

ToddHileHoffer23-Apr-09 7:09

23-Apr-09 7:09

Just one more tip for you.

Create a static class to hold all your session objects. For example

public static class SessionItems
 {
     public static YourObjectType YourObject
     {
         get
         {
             Object result = HttpContext.Current.Session["YourObject"];
             if (result == null)
                 return null;
             else
                 return (YourObjectType)result;
         }
         set { HttpContext.Current.Session["YourObject"] = value; }
     }
  }

It makes it easier to manager your session objects this way, plus it prevents bugs from trying to access a session object that does not exist. Also prevents bugs that can occur from mispellings

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Automated Emails and SMS

yogesh_kumar_agarwal22-Apr-09 7:51

yogesh_kumar_agarwal

22-Apr-09 7:51

Dear All,

I have a requirement that i want to send mail to all my user registered on my site in last 24 hours.

Manually its working fine but i dont want that a operator has to sit and search data then click on some button to send the mail. I want that by using some automated process that server automattically send the mail at the desire time.

Plz do reply what could be the possible conditions.

Thanks and Regards

David Mujica22-Apr-09 8:42

David Mujica

22-Apr-09 8:42

Create an application that reads your database of registered users, selecting those users that have registered on the current day and generate your email. Sounds pretty straight forward, right ?

Are you familiar with a programming language such as VB.net or C#.net ?

Are you capturing the registered user with a date stamp of when they registered ?

Once the application is written, you could simply schedule it to run each night at 23:59 (just before midnight) to generate the emails.

yogesh_kumar_agarwal22-Apr-09 9:07

yogesh_kumar_agarwal

22-Apr-09 9:07

Thanks for the reply. You means to say their is way to implement this is a desktop application which is shudule to be run on specific time.

or I want to run one more thing is their is any way to create the utility in web application it self.

Thanks

David Mujica22-Apr-09 10:19

David Mujica

22-Apr-09 10:19

My initial vision was to develop a "console application" which would be scheduled to run at a particular time. A console application is a Windows application that has no GUI, it looks like an old DOS program, just a black and white DOS box. The reason for this is that it is fairly easy to develop and test. Once this applcation is written, you could schedule it to run on your web server nightly.

I'm not sure how you would create a Web Application that would send these emails without some type of user intervention. You could create a simple web page that selects all of the newly registered users and when the operator clicks on a button the emails are generated and sent. I don't see how this could be scheduled to run automatically.

I am by no means an expert in web development. Smile | :)

How to check for duplicates before uploading.

Perry Holman22-Apr-09 16:49

Perry Holman

22-Apr-09 16:49

I presume you are implementing website using asp.net/c# on the Microsoft platform:
First assure the IIS your website resided in have installed SMTP Virtual Server and some necessary configuration is well done.
Second when a new user registers into your website successfully, you can trigger a mailing event.

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You can find many excellent audio/video converter tools there!

Mantaii22-Apr-09 5:40

Mantaii

22-Apr-09 5:40

Hi!
I have a small upload site that I have built but one thing I can't work out is how to check to see if the file path has already been used.

When I upload just now I create a website address which is saved in doc_url within my table. What I want to check is that when uploading a new file, there isnt already an identical url created within doc_url.
If there is already a file within the database with the same path then I want to throw up an error message so the user knows there is already a file saved at this location with the same name.

I'm using VS2005, C#, ASP.net

Thanks for your help in advance.

Deshbir Singh22-Apr-09 5:54

Deshbir Singh

22-Apr-09 5:54

add a random numder like doc_url_randomNumber.

Prince
Team Lead
Quest Solutions
www.imaginethinkact.com

Mantaii22-Apr-09 5:57

Mantaii

22-Apr-09 5:57

But that means there are two files the exact same within the database, what I want is to have only 1 version of the url which means, one version of the file I have uploaded.

To explain a bit more, when I upload a file e.g. example.gif to a folder I automatically create a url e.g. http://localhost/folder1/example.gif

Now, if I upload a file with the exact same name to the exact same folder I want a message to be displayed saying, there is already a file with this name in this folder.

Deshbir Singh22-Apr-09 6:02

Deshbir Singh

22-Apr-09 6:02

Just loop through that folder and compare the file names with your new filename. upload only when result is "no match found".

Prince
Team Lead
Quest Solutions
www.imaginethinkact.com

Perry Holman22-Apr-09 16:55

Perry Holman

22-Apr-09 16:55

Very simple! You can handle that as below:

string filePath = Server.MapPath("~/folder1/example.gif");
if (File.Exists(filePath))
{
//show a message to the user
}

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