[英]Morris Chart with dynamic data from C#
我正在尝试在ASP.NET Web应用程序中构建一个Morris图,其中填充图形的数据来自ajax帖子到C#方法。
返回数据是:
[{"process":"W3WP","xKey":"2018-8-1 7:00","yKey":"60"},
{"process":"Proc","xKey":"2018-8-1 7:00","yKey":"35"},
{"process":"W3WP","xKey":"2018-8-1 7:30","yKey":"75"},
{"process":"Proc","xKey":"2018-8-1 7:30","yKey":"30"},
{"process":"W3WP","xKey":"2018-8-1 8:00","yKey":"70"},
{"process":"Proc","xKey":"2018-8-1 8:00","yKey":"39"},
{"process":"W3WP","xKey":"2018-8-1 8:30","yKey":"71"},
{"process":"Proc","xKey":"2018-8-1 8:30","yKey":"30"}]
基本上, 我想要一个图表,显示进程列表(动态)的CPU使用情况。 每个过程都应该用一条线来表示。 当我使用以下JavaScript构建图形时,图形无法正确显示:
var procChart = new Morris.Line({
element: 'chartProcesses',
data: $.parseJSON(ProcGraph()),
xkey: ['xKey'],
ykeys: ['yKey'],
labels: ['process'],
hideHover: 'auto',
resize: true
});
JSON帖子如下:
function ProcGraph() {
var data = "";
$.ajax({
type: 'POST',
url: 'Servers.aspx/GetGraphData',
dataType: 'json',
async: false,
contentType: "application/json; charset=utf-8",
data: {},
success: function (result) {
data = result.d;
alert(data);
},
error: function (xhr, status, error) {
alert(error);
}
});
return data;
}
最后,C#类:
public class GraphChartData
{
public string process { get; set; }
public string xKey { get; set; }
public string yKey { get; set; }
public GraphChartData(string process, string _xKey, string _yKey)
{
this.process = process;
this.xKey = _xKey;
this.yKey = _yKey;
}
public GraphChartData()
{
}
}
图表结果如下: Morris Graph
我制作了一个模拟动态数据的WebMethod
:
它生成一个随机数量的行和进程(2到5之间),然后返回一个包含标签的对象,yKeys和Morris Line图所需的数据。
[WebMethod]
public static object GetGraphData()
{
Random random = new Random();
List<Dictionary<string, object>> processes = new List<Dictionary<string, object>>();
List<string> labels = new List<string>();
List<string> yKeys = new List<string>();
bool labelsDone = false;
int nbLines = random.Next(2, 5);
int nbProcesses = random.Next(2, 5);
for (int i = 0; i < nbLines; i++)
{
Dictionary<string, object> processLine = new Dictionary<string, object>();
string time = DateTime.Now.AddMinutes(i).ToString();
processLine.Add("datetime", time);
for (int j = 0; j < nbProcesses; j++)
{
processLine.Add($"processName{j + 1}", random.Next(100));
if (!labelsDone)
{
labels.Add($"Process Name{j + 1}");
yKeys.Add($"processName{j + 1}");
}
}
labelsDone = true;
processes.Add(processLine);
}
return new
{
labels = labels,
ykeys = yKeys,
processes = processes
};
}
用于从WebMethod
GetGraphData
获取数据的JavaScript代码:
$(document).ready(function () {
ProcGraph();
});
function ProcGraph() {
var data = "";
$.ajax({
type: 'POST',
url: 'Servers.aspx/GetGraphData',
dataType: 'json',
contentType: "application/json; charset=utf-8",
data: {},
success: function (result) {
data = result.d;
SetMorris(data)
},
error: function (xhr, status, error) {
alert(error);
}
});
return data;
}
function SetMorris(data) {
var procChart = new Morris.Line({
element: 'chartProcesses',
data: data.processes,
xkey: ['datetime'],
ykeys: data.ykeys,
labels: data.labels,
hideHover: 'auto',
resize: true,
parseTime: false
});
}
请使用WebMethod
生成的数据尝试以下代码段:
var data = [ { "datetime": "14/08/2018 14:41:28", "processName1": 2, "processName2": 50 }, { "datetime": "14/08/2018 14:42:28", "processName1": 20, "processName2": 34 }, { "datetime": "14/08/2018 14:43:28", "processName1": 17, "processName2": 81 }, { "datetime": "14/08/2018 14:44:28", "processName1": 86, "processName2": 67 } ] var procChart = new Morris.Line({ element: 'chartProcesses', data : data, xkey: ['datetime'], ykeys: ['processName1', 'processName2'], labels: ['ProcessName1', "Process Name1"], hideHover: 'auto', resize: true, parseTime: false });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/raphael/2.1.0/raphael-min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.min.js"></script> <link href="https://cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.css" rel="stylesheet"/> <div id="chartProcesses"></div>
确保将parseTime
属性设置为false
:
parseTime: false
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