Tutorial: Pass data between pages in ASP.net

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You have created the perfect webpage. Beautifully formed HTML, poetic CSS, artistic JavaScript, and cunning jQuery. And suddenly — a link — and all user data is lost!

By far, the simplest way to pass data between pages is by using URL variables. These little nuggets act quite a bit like two pages playing catch:

  • the first page throws some variables along with the URL
  • the second page must catch them

the throw

Get the data, save it as a string like this:

then send the data to a page like this

Thats it!

And now for a little explanation of part one:

the “?” after the url means “hey server, get ready… Im about to pass you some data.”

“name=” this is what im going to be passing you.

and “strName”… Here’s the data!

It’s pretty simple to pass multiple values too: just put an & symbol between variables, like this:

Be sure to put this inside of some sort of event in the code behind, like a button or linkbutton click.

the catch

This part is almost as simple to implement as the throw. The basic steps are:

  • get the variable from the url, if it is there
  • the store it, or use it right then

As your page is loading, your want to let the server know that you are expecting some data, and store it if there.

this is done by using:

Then you are free to do any ifs, fors, dos, or other whathaveyous on your string that you would like.

For example: Im expecting a username, but since i didn’t get one, send them back home:

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