Can Anyone Help Me With Connecting To A Database To Search?

I'm trying to make this piece of code work, I get all of it except how I get the data from the database, what I wish to do is. On page load I wish to take the value of a querystring in the page URL called ProductID and search a database to see if it exists in a specifical table and column, if it exists I wish to make a button not visible. the code I am using is:

 

#############

 

protected

void Page_Load(
object sender,
EventArgs e)


    {

// Get the querystring value


       
String inQueryString = Request.QueryString[
"ProductID"];


       


       
// Get the data from the database, using the above value


       
DataTable data = ??

 
 

The datasource I want to connect to is SqlDataSource1, and the table I want to search is “Reviewsâ€?. I want to search in the column “ProductIDâ€? and search for the ProductID from the URL query string above.



       


       
// Did we find a product in the database?


       
if (data !=
null &&


  
         data.Rows.count > 0)


        {


           
// Code to display the product's information


          
// We found a product, so we need to hide a button


            Button5.Visible =
false;


        }


       


   


        }

 

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Please can somebody fill in the missing bit for me so i know how it should be, i've searched the quickstart tutorial on the menu above and I still don't understand it, as it doesn't show anything like what I want to do, and I have looked at numerous websites about the matter. If you don't have time that is okay, but If somebody does have the time to show me what I need, I would be very greatfull.

 

Regards

 

Daniel coates