how to create dynamic imagebutton when open a new form?

Call this method on PageLoad()

//'imageUrl' url of image
    public void CreateDynamicControl(string imageUrl)
    {
        //create object of ImageButton using new keyword
        ImageButton _imgBtn = new ImageButton();
        //set Id property of _imgBtn
        _imgBtn.ID = "ImageButton1";
        //set image url
        _imgBtn.ImageUrl = imageUrl;
        //set height & width
        _imgBtn.Height = new Unit(50);
        _imgBtn.Width = new Unit(100);
        //add ImageButton object in your form
        this.Form.Controls.Add(_imgBtn);
    }