每当调用PartialView时，确保视图控制器方法获取最新的图表数据(Ensuring view controller method to get latest chart data is called whenever PartialView called)

 我在Web.Helpers中使用Chart来呈现视图的图形。 这个视图的数据集可以通过类型区分为子集，并且该视图允许用户选择类型。 
 
 包含此图表的我的剃须刀视图（_Chart.schtml）很简单： 
 
<p>
<img src="/MyController/MyChart" />
</p>
 
 控制器代码（简化） 
 
public void MyChart()
{
  ChartSeries[] data = GetChartData(new string[] { _curChartDataType });
var chart =
                new Chart(500, 200, ChartTheme.Green);

                    for (int i=0; i<data.Length; i++) {
                        title += data[i].name + " ";
                        chart.AddSeries(name: data[i].name, chartType: "Line",                                                       
                           xValue: data[i].xValue, xField: data[i].xField,                
                           yValues: data[i].yValues, yFields: data[i].yFields);   
                    }
                    chart.AddTitle(title)
                    .AddLegend()
                    .Write("png");
}


public ActionResult ObjectList()
 {
            // irrelevant code removed

            return PartialView("_Chart");
}
 
 在父视图的cshtml中，我使用jquery来捕获用户对类型选择的更改，并调用ajax中的MyController / ObjectList调用。 
 
 第一次加载视图时，图形正确呈现。 但是，用户调用的类型更改会导致后续对ObjectList的调用（如预期的那样），但MyChart（）在第一次后再也不会被调用。 
 
 任何我应该做的事情来确保MyChart（）每次调用PartialView（“_ Chart”）时都会被调用？ 任何建议感激。 

I am using Chart in Web.Helpers to render graphs for a view. The data set for this view can be distinguished by type into subsets, and the view allows the user to select a type.
 
My razor view containing this graph (_Chart.schtml) is simply:
 
<p>
<img src="/MyController/MyChart" />
</p>
 
The controller code (simplified)
 
public void MyChart()
{
  ChartSeries[] data = GetChartData(new string[] { _curChartDataType });
var chart =
                new Chart(500, 200, ChartTheme.Green);

                    for (int i=0; i<data.Length; i++) {
                        title += data[i].name + " ";
                        chart.AddSeries(name: data[i].name, chartType: "Line",                                                       
                           xValue: data[i].xValue, xField: data[i].xField,                
                           yValues: data[i].yValues, yFields: data[i].yFields);   
                    }
                    chart.AddTitle(title)
                    .AddLegend()
                    .Write("png");
}


public ActionResult ObjectList()
 {
            // irrelevant code removed

            return PartialView("_Chart");
}
 
In the parent view's cshtml, I use jquery to catch the user's change in type selection and invoke the call to MyController/ObjectList in ajax.
 
The graph renders properly when the view is first loaded. However, the user-invoked type changes result in a subsequent call to ObjectList (as expected), but MyChart() never gets called again after the first time. 
 
Anything I should do to ensure MyChart() gets called again whenever PartialView("_Chart") is called? Any suggestions appreciated.

原文：https://stackoverflow.com/questions/36848191