How To Dynamically Add Controls to a form

Asp.net form, yes, basically in code you do a

TextBox myTextboxControl = new TextBox();
// Configure text box properties
MyPanelControl.Controls.Add(myTextboxControl);

You will have a hard time adding controls to a Kentico BizForm however, but it should still be possible by digging into the sub controls and replacing controls, not sure why you would though.

If you search Kentico's entire solution for ".Controls.Add(" you will find many examples.

A form or a page/webpart? They are different things inside and outside of Kentico. Dynamically adding a control to a page/webpart is as simple as:

<asp:PlaceHolder ID="ph1" runat="server"/>

protected void Page_Load(object sender, EventArgs e)
{
    LiteralControl lit = new LiteralControl();
    lit.Text = "Hello World!";
    lit.ID = "litText";
    ph1.Controls.Add(lit);
}

I can really really think of realistic scenario when need to add a control. You probably will be better off hiding/showing control in the form based on some conditions. You should check how to work with depending fields

Thanks Peter Mogilnitski

But what is really need is one field with multiple values that is based on user needs.

for example we have a UserCertificate Field that user enter all certificates that he/she passed.

probably he/she passed only one certificate or multiple.

when he/she has multiple certificate then we ask him to add another one in one place.we see such functionality in grouped attachments where user can only upload one attachment or multiple attachments.

as a result the scenario you suggest is not suited here.

Thanks Brenden Kehren

I need this functionality in custom table form.a group of fields filled by user and user can add another group of same fields if required (see my previous reply).adding controls done in AJAX way.

also i need to develop information gathering form manually and i can not use kentico built in form engine.

There are a couple ways to handle this:

• Create a custom usercontrol - least desired as it doesn't follow Kentico best practices
• Create a custom webpart to handle the custom logic - ok but can be very complicated in some aspects and have many dependencies. Webparts are supposed to be reusable, this would not be.
• Create a global event handler to handle the custom logic - ok but again can be very complicated and dependent on other items.
• Create a custom form control -most desireable as it is reusable across all objects and very dynamic in nature. Your form control would handle adding 1 or multiple items to whatever table you decide and be reusable across other objects like page types, forms and custom tables.

Thanks Trevor Fayas

That is what i need exactly