How To Nevigate To Target Page

I have created the form and html controls dynamically in the page load method of the page.

Like below :

Dim form As New HtmlForm
Dim btnSubmit As New HtmlInputButton
Dim txtQuery As New HtmlInputText form.Action = "User.aspx"
form.Method = "POST"
form.Name = "form1"
txtQuery.Name = "user"
txtQuery.Value = "john"
btnSubmit.ID = "Submit"
form.Controls.Add(txtQuery)
form.Controls.Add(btnSubmit)

what I want is that without clikcing on the submit button it should navigate to the target page which is listed in the Action and post the data as well.

how can I achive this by programatically.