Question

i have 2 textbox controls inside a usercontrol TextBoxUC.ascx
i have a page.aspx that contains the usercontrol. how can i get a reference to each textbox using javascript from page.aspx?

Answer 1

do you have access to modify the user control? if so, you can add properties like Textbox1ClientID and Textbox2ClientID, which would return the client id for the respective controls.

user control c# :

public string Textbox1ClientID { get { return this.textbox1.ClientID; } }

js on the page:

var text1 = document.getElementById('<% =this.UserControl1.Textbox1ClientID %>');

if you can’t modify the user control, you’ll have to put he client id string together manually.

js:

var text1 = document.getElementById('<% =this.UserControl1.ClientID %>_Textbox1');