How to change src Attribute of iframe dynamically

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I am trying to modify or add the "src" attribute of the an Iframe from code behind file but unable to do so.
.aspx:-

XML

<iframe id="Iframe1">
</iframe>

.cs:-

C#

HtmlLink link1 = (HtmlLink)Page.FindControl("Iframe1");
link1.Attributes.Add("src", "http://www.xyz.com");

The error I am getting:

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Posted 13-Nov-11 3:31am

zappx

Updated 13-Nov-11 3:46am

v3

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thatraja · Answer 1 · 2011-11-13T03:54:00

Solution 1

Your code is wrong, try like this,

C#

HtmlControl frame1 = (HtmlControl)this.FindControl("Iframe1");
frame1.Attributes["src"] = "http://www.xyz.com";

BTW check this Loading pages in IFRAME dynamically from codebehind - ASP.NET[^]

Posted 13-Nov-11 3:54am

thatraja

zappx · Answer 2 · 2011-12-05T18:23:00

Solution 2

C#

HtmlControl x = (HtmlControl)this.frame1;
           

x.Attributes.Add("src", "http://www.xyz.com"])

Posted 5-Dec-11 18:23pm

zappx