I'm using a CompareValidator on a page, and I added a ControlAdapter (via browserfile) to watch all BaseValidator classes (and their derivatives). My ControlAdapter does nothing - overrides no methods, currently. The validator writes the span tag, it's id and style, but nothing else - no error message, no javascript. Any ideas why?
A:
Whoops; wrote too soon. The answer is: the standard WebControlAdapter overrides the Render() method - which is where the processing of the Validator happens. The solution is to subclass the abstract System.Web.UI.Adapters.ControlAdapter and create your own Adapter (which can actually be empty).
public class ValidatorAdapter : System.Web.UI.Adapters.ControlAdapter { }
public class FieldError : ValidatorAdapter
{
protected void RenderBeginTag(HtmlTextWriter writer)
{
writer.AddAttribute(HtmlTextWriterAttribute.Class, "fieldError");
writer.RenderBeginTag(HtmlTextWriterTag.Div);
}
protected override void Render(HtmlTextWriter writer)
{
RenderBeginTag(writer);
base.Render(writer);
RenderEndTag(writer);
}
protected void RenderEndTag(HtmlTextWriter writer)
{
writer.RenderEndTag();
}
}
and, add this to the of the browse file:
<adapter controlType="System.Web.UI.WebControls.BaseValidator"
adapterType="UI.ControlAdapters.FieldError"
/>
end-user
2010-05-21 13:37:28