CODEWITHSUNDEEP
javascriptasp.net-mvcswitch-statementviewdataviewbag
petko_stankoski
petko_stankoski

Reputation: 10723

Using ViewBag in a switch statement

Here is the code in my controller:

public ActionResult MyMethod(string widgetId)
    {
        ViewBag.Widget = widgetId;
        ViewData["widget"] = widgetId;
        return View();
    }

And here is what I tried in the switch statement:

var sort = <%=(string)ViewBag.Widget.ToString() %>;
    //switch (<%=(string)ViewData["widget"] %>) {   
    switch (sort) {            
        case 'a1':

            break;
        case 'a2':

            break;
        case 'a3':

    }

In my case, the widgetId is 'a3'

And it throws error that a3 is undefined. How to fix this? I

Upvotes: 0

Views: 1887

Answers (3)

K D
K D

Reputation: 5989

You should use it in following way while working in javascript..

var sort = "<%=ViewBag.Widget.ToString() %>";

considering your viewbag value as "a3" above statement will produce

var sort = "a3"; // so JS could evaluate it as string.

In your previous statement it was producing it like following

 var sort = a3; // Where JS was not having any idea about what a3 is

Upvotes: 1

Daniel Imms
Daniel Imms

Reputation: 50229

You're missing the quotes around the js string. So the server passed the value a3 is undefined on the client side.

var sort = '<%=(string)ViewBag.Widget.ToString() %>';

Upvotes: 0

Tim M.
Tim M.

Reputation: 54377

I'm assuming this is JavaScript with a server value being written into the output:

// you were missing quotes around the value of "sort"
// (single or double quotes are fine since this is JS)

var sort = "<%= ViewBag.Widget.ToString() %>"; 
alert(sort);

switch (sort) {            
    case 'a1':
        break;

    case 'a2':
        break;

    case 'a3':
        break;
}

Upvotes: 2

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