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viewbag in mvc 4

Anonymous User210209-Oct-2014
I am using a ViewBag as my checkpoint to which partial view should I render on a certain div and here's my code.
In Controller:
[HttpPost]
        publicActionResult NewAppointment(appointment.AppointmentInformation model)
        {
            if (ViewBag.NextForm == null || ViewBag.NextForm == "undefined")
            {
                info.CustomerType = model.CustomerType;
                ViewBag.NextForm = "Information";
            }
            elseif (ViewBag.NextForm == "Information")
            {
                info.CustomerID = String.IsNullOrEmpty(model.CustomerID) ? "" : model.CustomerID;
                info.CustomerName = String.IsNullOrEmpty(model.CustomerName) ? "" : model.CustomerName;
                info.CustomerCNum = String.IsNullOrEmpty(model.CustomerCNum) ? "" : model.CustomerCNum;
                ViewBag.NextForm = "Services";
            }
            elseif (ViewBag.NextForm == "Services")
            {
                //do nothing;
            }
            return View(info);
        }

In View:

<formmethod="post">
    <divid="PartialContainer">
 
        @if (ViewBag.NextForm == null || ViewBag.NextForm == "undefined")
        {
            @Html.Partial("CustomerType")
        }
        @if (ViewBag.NextForm == "Information")
        {
            @Html.Partial("GuestInformation")
        }
        @if (ViewBag.NextForm == "Services")
        {
            @Html.Partial("Service")
        }
 
    </div>
    <divid="ButtonArea">
        <buttonid="btnCancel">Cancel</button>
        <buttonid="btnBack">Back</button>
        <buttonid="btnNext">Next</button>
    </div>
</form>


On third click of btnNext, the @Html.Part @Html.Partial("Service") is not working. But the first two @Html.Partial is working fine.

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Updated on 09-Oct-2014
Anonymous User

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1 Answers

Anonymous User

Anonymous User

09-Oct-2014

Why don't you embed the step in your form (in your partials)?

That way, whenever the form is submitted, you get which step it was, and show the proper next step from your controller code, not the view.

You could either add it as a property of your ViewModel, or simply just POST it and get it from Request object in your Controller.

Pseudo-code:

[HttpPost]
        publicActionResult NewAppointment(appointment.AppointmentInformation model)
        {
            //get the current step or start with empty string
            //although if this is the POST method, you should have the
            //first value, set in your GET method to show the form!
            var step = Request.Params["NextForm"] ?? "";
 
            if (step == "")
            {
                info.CustomerType = model.CustomerType;
                ViewBag.NextForm = "Information";
            }
            elseif (step == "Information")
            {
                info.CustomerID = String.IsNullOrEmpty(model.CustomerID) ? "" : model.CustomerID;
                info.CustomerName = String.IsNullOrEmpty(model.CustomerName) ? "" : model.CustomerName;
                info.CustomerCNum = String.IsNullOrEmpty(model.CustomerCNum) ? "" : model.CustomerCNum;
                ViewBag.NextForm = "Services";
            }
            elseif (step == "Services")
            {
                //do nothing;
            }
            return View(info);
        }

And then use that value in your View to have it sent anytime with your form.

<formmethod="post">
    <divid="PartialContainer">
        <inputtype="hidden"name="NextForm"value="@(ViewBag.NextForm ?? "")"/>
 
        @if (ViewBag.NextForm == null || ViewBag.NextForm == "undefined")
        {
            @Html.Partial("CustomerType")
        }
        @if (ViewBag.NextForm == "Information")
        {
            @Html.Partial("GuestInformation")
        }
        @if (ViewBag.NextForm == "Services")
        {
            @Html.Partial("Service")
        }
 
    </div>
    <divid="ButtonArea">
        <buttonid="btnCancel">Cancel</button>
        <buttonid="btnBack">Back</button>
        <buttonid="btnNext">Next</button>
    </div>
</form>

You will be getting the NextStep with your form everytime, and then you just use ViewBag to pass data from controller to view, which is the intended use.

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