Web Forms :: Removing The Border Style For Dynamically Created Image Controls?

sometimes we need to use the asp image control so we can generate empty alt tags (visual studio 2005 does not render any attributes set
to an empty string). I know how to do this and also how to remove the border style that is automatically added

(http://blog.josh420.com/archives/2007/10/aspnet-image-control-border-width-inline-style.aspx).

We implemented this 6 months ago, however, only today have I discovered that it does not work when images are created dynamically.The first implementation was for asp images that have been set up within an aspx page:

-<asp:image runat="server" id="imgMast1" GenerateEmptyAlternateText="True" alternatetext="" imageurl="" />

The above works-no border style is rendered and the imageurl is populated in code.I have other pages where I'm building up sections dynamically using C# code, such as:-

System.Web.UI.WebControls.Image featureImage = new
System.Web.UI.WebControls.Image();
featureImage.GenerateEmptyAlternateText = true;
featureImage.ImageUrl = imageSrc;
divImage1.Controls.Add(featureImage);
divImageFeature.Controls.Add(divImage1);

When creating controls dynamically like this, the solution describe above does not remove the border style.