Question

I am looking to force a submit once a user selects a value for DropDownList as long as it is not ‘Custom’. If it is ‘Custom’ I don’t want the form submitted. Instead I would like to have the startingDate and endingDate to show. However, I don’t want the startingDate or endingDate to show unless Custom was selected. I am thinking this has to be done with jQuery or JavaScript. Can anybody tell me how to achieve this?

Here is the code I have in the controller to pass the starting date, ending date and list for the drop down to the view:

List<SelectListItem> rangeList = new List<SelectListItem>();
rangeList.Add(new SelectListItem { Text = "Today", Value = "Today" });
rangeList.Add(new SelectListItem { Text = "Yesterday", Value = "Yesterday" });
rangeList.Add(new SelectListItem { Text = "Past 7 Days", Value = "Past 7 Days" });
rangeList.Add(new SelectListItem { Text = "Past 30 Days", Value = "Past 30 Days" });
rangeList.Add(new SelectListItem { Text = "Last Month", Value = "Last Month" });
rangeList.Add(new SelectListItem { Text = "Custom", Value = "Custom" });

ViewBag.rangeList = rangeList;
ViewBag.startingDate = startingDate;
ViewBag.endingDate = endingDate;
ViewBag.specifiedRange = specifiedRange;

EDIT

I modified my code to show an attempt at adding the script. Below is the code I have in the view now. It is not doing anything.

<script type="text/javascript">
    $("#range").change(function () 
    {
        if ($(this).val() == "Custom") 
        {
            $("p.down").toggle();
        }
        else 
        {
            $("form").submit();
        }
    });
</script>

@using (Html.BeginForm())
{
    <p>
        @Html.DropDownList("specifiedRange", new SelectList(
                    ViewBag.rangeList as System.Collections.IEnumerable, 
                    "Text", 
                    "Value", 
                    new { @Id = "range" }))
    </p>
    <p class = "down">
        Starting Date: @(Html.Telerik().DateTimePicker().Name("startingDate")) 
        Ending Date: @(Html.Telerik().DateTimePicker().Name("endingDate"))
        <input type="submit" value="GO" />
    </p>
}

Answer 1

Yes it needs to be done with jquery.Something like this:

$(document).ready(function(){
    $("#idofyourdropdown").change(function(){
       if($(this).val() == "Custom")
       {
        $("p.down").toggle();
       }
        else{
       $("form").submit();
    }

    });
});

And class “down” to your <p> that you want to show.