Question

我有ASP.Net MVC3应用程序。我的任务是从文件中读取点并显示它们。对于从文件读取点我使用DLL。我用javascript绘制它们。这是我的代码：

// Controller
{
  IntPtr lib = LoadLibrary("lib.dll");

  // getting points from DLL. I get then as array of strings to serialise later
  string[] points = new string[0];
  GetArrayPointsAsStrings(points); // I get coordinates - [x1, y1, z1, x2, y2, z2, ..]

  FreeLibrary(lib);

  JavaScriptSerializer serializer = new JavaScriptSerializer();
  serializer.MaxJsonLength = Int32.MaxValue;
  string serialized_points = serializer.Serialize(points);

  return View(new MyModel(serialized_points));
}

// Model
public class MyModel
{
  public string Points { get; private set; }
}

// View
@{
var m = Model;
var array_of_strings_points = m.Points;
}

// object from javascript
var js_obj = new js_obj();
var points_string = '@Html.Raw(@array_of_strings_points)';
js_obj.DrawPoints(points_string);

//js
//.. and here in DrawPoints() I parse the string of points and draw point

我的问题是：将所有序列化点从控制器传递给javascript是否可以这样做？可能有更好的方法将所有点传递给javascript？

谢谢，振亚

Answer 1

我的问题是：将所有序列化点传递给字符串是否可以控制器以这种方式javascript？可能有更好的方式通过所有指向javascript？

在您的模型上保留真实的CLR类型（string[]）。您不需要在控制器中进行JSON序列化：

public class MyModel
{
    public string[] Points { get; set; }
}

然后让控制器填充并将视图模型传递给视图：

string[] points = ...
MyModel model = new MyModel();
mode.Points = points;
return View(model);

最后在你看来：

@model MyModel
...

<script type="text/javascript">
    var js_obj = new js_obj();
    var points = @Html.Raw(Json.Encode(Model.Points));
    js_obj.DrawPoints(points);
</script>

现在，如果您的js_obj.DrawPoints期望JSON字符串作为参数而不是javascript数组您可以像这样传递字符串：

@model MyModel
...

<script type="text/javascript">
    var js_obj = new js_obj();
    var points = @Html.Raw(Json.Encode(Model.Points));
    js_obj.DrawPoints(JSON.stringify(points));
</script>

ASP.Net将数组从Controller传递到View到javascript

1 个答案: