恢复组合框中的所选值

Question

I have some comboboxes on form, like this:

@Html.DropDownListFor(x => x.ComboId, Model.ComboValues)

Also, I have simple action method, which returns recieved model in same view. When change selected item, and submit form, I'll get same page with correct selected value in combobox. But when I click "Back" button in my browser (check this in Chrome 25+, IE 9+), I'll get last selected value.

For example , let ComboValues contains 2 values: 1 and 2 . Previously, ComboId = 1 . When I change it to 2 and submit, I'll have form with correct value 2 . But when I click "Back" button in browser, I'll still have combobox with value 2 (but I was hope to see 1 ).

Answer 1

This behavior occurs, because I don't call action, when "Back" in browser. And my page wasn't redrwaing. We can fix this behavior with recalcaluting combobox selected item when page loaded:

$(function () {
    $("#@Html.IdFor(m => m.ComboId)").val("@Model.ComboId");
}