Filling checkboxes with data from database

Hello.
I need help setting a checkbox value to checked if the corresponding field has "Yes" saved in the database.
I can do this with textboxes, but haven't figured out how to do it with checkboxes or drop down lists.
If you can help, please do.
Thanks.

In all honesty, problems like this is why programmers tend to make more money than web developers. :) You more or less need to figure out what you want to happen, and then write the code to make that happen. Let me give you an example...
Let's say we're building a web site that requires people to register and then log in. When they register, they get a checkbox where they can opt in for spam. We've decided to store the user's preference in a database, essentially a field called spam which contains either a "yes" or a "no" value. When the time comes to send out those emails, we simply select all records in the database where that spam field is set to "yes".
So far, so good.
If the user decides to check that opt-in checkbox, then we want to set the spam field to "yes". If he already exists in the database, we can use an SQL update statement to set the field. If he doesn't exist, we'll have to create a record for him and set all relevant fields with an insert statement. If he unchecks the box (or leaves it unchecked), then we want to do the same thing but make sure the spam field is set to "no".
When the user clicks on the submit button, the checkbox is submitted (or not) to the server as one of the parameters. We simply parse the parameters, see if the checkbox was checked or not, then write a little bit of JSP (or Java) code that sends the appropriate SQL statement as above, to the database.
That's the basic concept.
There are many slight variations. For example, several web sites will fill in that opt-in checkbox by default every time you visit their site, and you have to uncheck it if you don't want spam. The logic remains the same - just write a little bit of code that sees if the form passed you the checkbox filled in, and then either fill in, or erase the corresponding field in the database.
(I'm not bothering to add code here because there are many ways to do this, and which way is best really depends on what code college_amy has written so far.)

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Reward if useful
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Filling checkboxes with data from database

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