Question

I was able to make a simple webpart by following what was on this website
http://www.codeguru.com/csharp/.net/net_asp/webforms/article.php/c12293/
But now I would like to add controls like TextBoxes, Buttons, TreeViews …
How can I do that? The place I coded into was just a class library!! How can I use a designer and a page for coding?

Answer 1

Try not to override the Render method of the WebPart class, but instead override the CreateChildControls method like this:

protected TextBox txtName;
protected Button btnSubmit;

// create child control
protected override void CreateChildControls() {
    txtName = new TextBox();
    this.Controls.Add(txtName);
    btnSubmit = new Button();
    btnSubmit.Text = "Submit Name";
    this.Controls.Add(btnSubmit);
}