How to set the value of first input type text in document's first form using mshtml in C#?

Question

I am trying to set the value of first input type text in document's first form. See the code below.

HTMLDocument htmldoc = new HTMLDocumentClass();  
htmldoc = (HTMLDocument)WebBrowser.Document;  
HTMLFormElement fm = (HTMLFormElement)htmldoc.forms.item(0); 

In the above code I am getting first form as a form object. Now I want to find the first input type text in this form and set the value of that textbox.

Any help would be appreciated.

Answer 1

loop in all elements in form

   private void button5_Click(object sender, EventArgs e)
    {
        var htmldoc = (HTMLDocument)webBrowser1.Document.DomDocument;
        HTMLFormElement fm = (HTMLFormElement)htmldoc.forms.item(0);
        foreach (IHTMLElement item in (IHTMLElementCollection)fm.all)
        {
            var textbox = item as IHTMLInputElement;
            if (textbox != null)
            {
                textbox.value = "your text";
            }
        }
    }