Add textbox using code

How can I add a textbox into the form by using vb.net code for my web application?

I write the following code but the textbox didn't appear:

Dim newTxt As TextBox = New TextBox()
newTxt.Wrap = True
newTxt.Text = "Hello"
Me.Controls.Add(newTxt)

You are not adding your textbox to your form but rather to the page. First get the form object by using FindControl method:

VB Code:

Dim frm As Control
Dim newTxt As TextBox = New TextBox()
 
 
frm = Me.FindControl("FormIdHere")
 
If frm Is Not Nothing
    '......your code for creating your textbox
    newTxt.Wrap = True
    newTxt.Text = "Hello"
    frm.Controls.Add(newTxt)
End