fileupload control in three tier archetecture

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C#

ASP.NET

i have productname, productprice, productimage ( i have fileuplod control for take the path of product image to save it to db) .

i want to save the data into database.. i am doing it in three tier...

i have textboxes for productname productprice. simply set them in properties.

and use it in insert sql query.. but wot i have to do to use it in sql querY( note i am doing in in database layer of three tier)


string query = "select * from where username='"+p.Username+"'";

ecoprops p = new ecoprops();

String query = "INSERT INTO ESK_Categories VALUES('" + p.Productname + "','"+p.Productprice+"', +and wot for file uplod+)";

can we set property for fileuplod control just as textbox

i have seprate class for setting up properties.