How to Access form 3 value from form 1 in c#

In form 1 you create an instance of form 3 , then from form 1 you can call all public objects from form 3 .
Follow this code :
Form1 :
private Form3  _frm1_frm3=null;
public   Form3      frm1_frm3
{
get {return _frm1_frm3;}
set {_frm1_frm3=value;}
}
In form 1 with textbox1 you call a public textbox from form 3 named : textbox3 :
if(frm1_frm3!=null && frm1_frm3.isdispose==false)
 {
this.textbox1.text = frm1_frm3.textbox3.text;
 }
Hope this helps you .

Ok, as far as I know, you can't put more then one form with runat = server on the page.
The question is why do you need more then one form?
You can create one form which will be defined on the whole page and put the textboxes in it, and then it is easy
text1.text = text2.text and that's all

Hi