Question

I have a dropdown list on my master page that needs to postback after being changed. After the postback, whatever page initiated the postback needs to be re-displayed.

My question is where do I handle this? Obviously I do not want to have to modify every Action in my project… My guess is to maybe postback to some other fixed action and have that action redirect back to the page that is the referrer. Am I correct? Any thoughts?

Thanks.

Jason

Answer 1

In Site.Master, I ended up wrapping the dropdown within its own form that posted back to a dedicated controller/action.

<% Using Html.BeginForm("ChangeRole", "Home")%>
   <div id="roleSelector">Change Role: <%=Html.DropDownList("Role", DirectCast(ViewData.Item("Roles"), SelectList), New With {.onchange = "this.form.submit();"})%></div>
<% End Using%>

In the controller I used the following code to change the mode and then redirected back to the referring URL.

<AcceptVerbs(HttpVerbs.Post)> _
Public Function ChangeRole() As ActionResult
    Me.CurrentUser.SetRole(DirectCast([Enum].Parse(GetType(Models.ApplicationRoles), Me.Request.Item("Role")), Models.ApplicationRoles))
    Return Redirect(Request.UrlReferrer.ToString())
End Function

I am unsure if this is the recommended way but I have been unable to think of another solution.