Inserting variables into aspx pages dynamically.

Grumpy · December 17th, 2005, 12:07 AM

How do I insert a variable in my code-behind file into the aspx page dynamically?
i.e
Code BF:
public string a = "inserted text";

aspx file:
<body bgcolor="!variable a goes here!">

planoie · December 19th, 2005, 08:45 AM

Make the body tag accessible to the server side code with the runat attribute:

  <body runat="server" id="tagBody">

Then, in your codebehind, you do this:

  protected System.Web.UI.HtmlControls.HtmlGenericControl tagBody;

Then you can access the body tag and do anything on the control such as assigning an attribute:

  tagBody.Attributes["bgcolor"] = "inserted value";

-Peter

jbenson001 · December 19th, 2005, 04:49 PM

Peter, cool piece of coding. I always wondered how to change the bgcolor from the codebehind.

Jim

planoie · December 20th, 2005, 08:32 AM

You can do that kind of thing with any tag that's brought into context in the codebehind. You can also add attributes that aren't even normally there and use those values in client side script. With the flexibility of the javascript and browser object models you'd be amazed at what you can cook up.

-Peter