C＃数组到javascript数组

方法1：在drawChart（）中进行图表数据格式化

使用System.Web.Script.Serialization;

1）建立jsonobj

public string GetLocality()
    {
        string[] locality = new string[] { "Loc_A", "Loc_B", "Loc_C", "Loc_D", };
        //long[] frequency = new long[] { 10, 20, 10, 80 };
        JavaScriptSerializer jsSerializer = new JavaScriptSerializer();
        string jsonobj = jsSerializer.Serialize(locality);
        return jsonobj;       
    }

2）可以将其添加到HTML数据属性中，也可以使用ajax调用来提取。

   <div id="piechart" data-piechart-localityary='<ServerSide call/var Getlocality()'> 
   <div>

3）从html data-dash中将JavaScript中的数据提取为

var locality = $('#piechart').data('piechart-localityary');

方法2：在代码后面的图表数据格式

我建议保持DrawChart（）函数简单。您提到您在后面的代码中有可用的数组。

1）在后面的代码中构建JavaScript字符串文字对象。格式
2）将jSonData作为数据属性附加到html页面中，或使用ajax将其拉出。如果不是很关键，我建议您保存服务器往返行程。
3）从html-data-dash将数据获取到drawChart（）中
4）带有源代码的工作示例JSFIDDLE

function drawChart() {

//var jsonData = $('#piechart').data('piechar-jsonobj');
var jsonData =  
{
"cols":[
    {"label":"Locality","type":"string"},
    {"label":"Frequency","type":"number"}
       ],
"rows":[
    {"c":[{"v":"Loc_A","f":null},{"v":10.00,"f":null}]},
    {"c":[{"v":"Loc_B","f":null},{"v":20.00,"f":null}]},
    {"c":[{"v":"Loc_C","f":null},{"v":10.00,"f":null}]},
    {"c":[{"v":"Loc_D","f":null},{"v":80.00,"f":null}]}
       ]
} ;

var data = new google.visualization.DataTable(jsonData);


var options = {
    title: 'MyPieChart',
    backgroundColor: { fill: 'transparent' },
    is3D: true
};

var chart = new google.visualization.PieChart(document.getElementById('piechart'));
chart.draw(data, options);
} 
google.load("visualization", "1", {packages:["corechart"]}); 
google.setOnLoadCallback(drawChart);

构建JavaScript字符串文字对象的代码

 public class Graph
{
    public List<ColInfo> cols { get; set; }
    public List<DataPointSet> rows { get; set; }    
}

public class ColInfo
{

    public string label { get; set; }
    public string type { get; set; }
}

public class DataPointSet
{
    public List<DataPoint> c { get; set; }
}

public class DataPoint
{
    public string v { get; set; } // value    
    public string f { get; set; } // format
}

public string DemoPieChart()
    {
        Graph ChartData = new Graph();
        ChartData.cols = new List<ColInfo>();
        ChartData.rows = new List<DataPointSet>();
        ColInfo Col1 = new ColInfo();
        Col1.label = "Locality";
        Col1.type = "string";
        ColInfo Col2 = new ColInfo();
        Col2.label = "Frequency";
        Col2.type = "number";
        ChartData.cols.Add(Col1);
        ChartData.cols.Add(Col2);

        //Loop your data entry from both array
        string[] locality = new string[] { "Loc_A", "Loc_B", "Loc_C", "Loc_D", };
        long[] frequency = new long[] { 10, 20, 10, 80 };

        for (int i = 0; i < locality.Length; i++)
        {
            DataPointSet Row = new DataPointSet();
            Row.c = new List<DataPoint>();
            DataPoint p1 = new DataPoint();
            p1.v = locality[i];
            p1.f = null;

            DataPoint p2 = new DataPoint();
            p2.v =  frequency[i].ToString("F")  ;           
            p2.f = null;
            Row.c.Add(p1);
            Row.c.Add(p2);
            ChartData.rows.Add(Row);          
        }
        JavaScriptSerializer jsSerializer = new JavaScriptSerializer();
        string jsonobj = jsSerializer.Serialize(ChartData);           
        return jsonobj;
      }

希望这可以帮助您构建解决方案。如果您需要澄清或特定的代码，请添加注释。我使用剃刀（MVC）构建html来填充数据属性。

可能的问题：JavaScriptSerializer在数字前后添加引号。

{"c":[{"v":"Loc_A","f":null},{"v": "10.00" ,"f":null}]}

注意“ 10.00”，而不是10.00。GoogleCharts不喜欢它。它可能不会绘制图表或绘制不正确的图表。