observableArray作为参数发送到控制器函数为空

Question

我想将FeatureList（observableArray）中的数据传递给TreeController中的SaveMappings函数。我已将一个按钮绑定到sendItems函数。我在var data = p2fData行放置了一个断点来查看我收到的内容。 p2fData为空。

我将控制器更改为public JsonResult SaveMappings（List p2fData）。在这种情况下，p2f数据显示有1个元素，但它的空值也是。

var Feature = function (featId) { 
    var self = this; 
    self.featId = featId;  
    self.parameters = ko.observableArray();  
} 

var ParameterToFeatureListViewModel = function() { 
    var self = this; 
    var newFeature = new Feature("Feature XYZ"); 
    newFeature.parameters.push("1"); 
    newFeature.parameters.push("2"); 
    self.FeatureList = ko.observableArray([newFeature]); 
    self.sendItems = function() { 
     $.ajax({ 
      type: "POST", 
      url: '/Tree/SaveMappings', 
      data: ko.toJSON(self.FeatureList), 
      contentType: "application/json; charset=utf-8", 
      dataType: "json", 
      success: function (response) { 
       alert(response); 
      }, 
      error: function (request, status, error) { 
       alert(request.statusText); 
      } 
     }); 
    } 
} 

var vm = new ParameterToFeatureListViewModel() 
ko.applyBindings(vm); 

public class TreeController:Controller 
{ 
    public ActionResult Index(){...} 
    [HttpPost] 
    public JsonResult SaveMappings(string p2fData) 
    { 
     var data = p2fData; 
     return Json(data); 
    } 
} 

Answer 1

请看看@how to pass knockoutjs view model into a mvc controller ...可能是它帮助..