C# 控制器中的 ASP NET MVC 数组到客户端数组

ASP NET MVC array in controller to client side array

提问by coredump

My question is how ( if possible ) from an array like string[] a;that I pass it to the view through the ViewBag, how can I obtain a javascript array of strings.

我的问题是如何（如果可能）从这样的数组string[] a;中通过 将它传递给视图ViewBag，如何获取字符串的 javascript 数组。

I want to use this because I get a set of data from the DB and I want in the view to make chart and for that I need a javascript array.

我想使用它是因为我从数据库中获取了一组数据，我想在视图中制作图表，为此我需要一个 javascript 数组。

采纳答案by McGarnagle

It's easy to "render" an array to a Javascript object, using string.Joinor similar:

使用string.Join或类似的方法将数组“渲染”到 Javascript 对象很容易：

@{
    ViewBag.a = new int[] { 1, 2, 3 };
    ViewBag.b = new string[] { "a", "b", };
}

<script type='text/javascript'>
    // number array
    var a = [ @(string.Join(", ", (int[])ViewBag.a)) ];
    console.log(a);  // [1, 2, 3]

    // string array -- use Html.Raw
    var b = [@Html.Raw("'" + string.Join("', '", (string[])ViewBag.b) + "'")];
    console.log(b);
</script>

回答by atbebtg

Controller

控制器

  public ActionResult Index()
    {
        int[] myArray = new int[] { 1, 3, 5, 7, 9 };
        ViewBag.myArray = myArray;
        return View();
    }

View

看法

@{
    ViewBag.Title = "Index";
    var myArray = (int[])ViewBag.myArray;
    var myjsstring = "";
    for(int i =0;i<myArray.Length;i++)
    {
        myjsstring += "mycars[" + i.ToString() + "] = " + myArray[i] + ";";
     }
}

    <script type="text/javascript">
        var mycars = new Array();
        @myjsstring


    </script>

回答by user3442612

Perhaps:

也许：

@{
    ViewBag.foo = new string[] { "a", "b", "c" };
}

var newFoo = @Html.Raw(Json.Encode(@ViewBag.foo));