cant get anything than NULL from textbox

Hi, as the subject says: I cant get anything than NULL from textbox'es. Can you please check my code, i have an idea that InsertParameters is wrong, but I have no idea how to set it up correctly. when i press the submit button, i get an error telling me that i cant insert NULL into the database, and thats correct. (i have disabled NULL inserts.) --start <%@ Page Language="C#" MasterPageFile="~/MasterPage.master" %>


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