Pass value from one page to another page

Dear sir I have two page first. Aspx and sec. Aspx. I want to pass value from textbox , which is in page first. Aspx to grid view which is in page sec. Aspx. Grid view is editable. While I have add value from grid view then first cell value come from first . Aspx and I fill only remaining values and click to save button. Like, I have three column 1: Id 2: name 3: amt In grid view. Id should be come from first. Aspx page. And name, amt fill by user. Please help me sir. Reg, Indradeo