Page 1
protected void Button_Click(object sender, EventArgs e)
{
Response.Redirect("Page2.aspx?data=" + Server.UrlEncode(TextBox1.Text));
}
Page2
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string data = Server.UrlDecode(Request.QueryString["data"]);
//Insert to database
}
}