HtmlAttributes append attributes

[Chris Neave]

Is there a way to add extra html attributes via the GridBuilder without removing any attributes already added?

I have some common custom attributes I add to grids so I wrapped up the code into some extension methods like this:

public static GridBuilder<T> CustomFilterBehaviour<T>(this GridBuilder<T> gridBuilder, string message = null) where T : class

{

    return gridBuilder.HtmlAttributes(new {my_customFilter = (message ?? "")});

}

public static GridBuilder<T> CustomRowCountBehaviour<T>(this GridBuilder<T> gridBuilder, string message = null) where T : class

{

    return gridBuilder.HtmlAttributes(new {my_customRowCount = (message ?? "")});

}

my JS routines then pick up on grid elements with these decorators to implement the behaviour.  The trouble is the HtmlAttributes call overwrites any attributes already set, so if I declare a grid like this:

@(Html.Telerik().Grid<Typology>()
    .Name("gridTypologies")

    // custom behaviours
    .CustomFilterBehaviour()
    .CustomRowCountBehaviour()

The call to .CustomRowCountBehaviour() overwrites the attribute set by the call to .CustomFilterBehaviour(), so the "my_customFilter" decorator is lost and not output!! What I really want to do inside the extension methods is add an extra Html attribute to anything that is already present.

Any suggestions? Thanks