我正在尝试在条形图中计算过去 7 天的节目。为此，我使用了条形图以及 ASP.NET MVC 和 C#。现在在此页面中，我添加了静态条形图显示，现在我希望此图表在设定日期的图表 x 轴上创建动态。
下面是我要显示的表格数据:
DateColumn | Count
09-05-2017 10
08-05-2017 05
07-05-2017 20
06-05-2017 4000
05-05-2017 30
04-05-2017 5000
03-05-2017 40
这是我使用存储过程从 SQL Server 中的表中获取的数据。
这是我的html页面代码=>
<div class="box box-without-bottom-padding">
<canvas id="myChart"></canvas>
</div>
这是我的脚本代码=>
<script type="text/javascript">
$(document).ready(function () {
$.ajax({
url: 'Home/GetCount',
dataType: "json",
type: "GET",
contentType: 'application/json; charset=utf-8',
async: false,
processData: false,
cache: false,
delay: 15,
success: function (data) {
for (var i in data) {
// here come the data as object in the object 2 value 1 is datecolumn and 2 is total count.
}
AutoFollow();
},
error: function (xhr) {
alert('error');
}
});
});
function AutoFollow()
{
var ctx = document.getElementById("myChart").getContext('2d');
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: ["M", "T", "W", "T", "F", "S", "S"], // here i want to show my date value
datasets: [{
label: 'AutoFollow',
data: [12, 19, 3, 17, 28, 24, 7], // here show my total count date wise
backgroundColor: "rgba(153,255,51,1)"
}, {
label: 'Manual',
data: [30, 29, 5, 5, 20, 3, 10],
backgroundColor: "rgba(255,153,0,1)"
}]
},
});
}
这是我的静态图表草图=>
在我的静态图表上方显示这里，请问任何知道如何在图表中设置我自己的数据的人。
最佳答案
示例:
型号:
public class MyModel
{
public string DateColumn { get; set; }
public int Count { get; set; }
public static List<MyModel> GetList()
{
return new List<MyModel>
{
new MyModel {DateColumn = "09-05-2017",Count = 10},
new MyModel {DateColumn = "10-05-2017",Count = 30},
new MyModel {DateColumn = "11-05-2017",Count = 50},
new MyModel {DateColumn = "12-05-2017",Count = 10},
new MyModel {DateColumn = "13-05-2017",Count = 100},
new MyModel {DateColumn = "14-05-2017",Count = 20},
new MyModel {DateColumn = "15-05-2017",Count = 10},
new MyModel {DateColumn = "16-05-2017",Count = 150},
new MyModel {DateColumn = "17-05-2017",Count = 15},
new MyModel {DateColumn = "18-05-2017",Count = 11},
new MyModel {DateColumn = "19-05-2017",Count = 5},
};
}
}
Clontoller:
public class HomeController : Controller
{
public JsonResult GetCount()
{
var model = MyModel.GetList();//Lode data from database
return Json(model, JsonRequestBehavior.AllowGet);
}
}
View :
<div class="box box-without-bottom-padding">
<canvas id="myChart"></canvas>
</div>
脚本:
<script type="text/javascript">
$(function() {
var data = getData();
AutoFollow(data);
});
function getData() {
var dateValue = [];
var countValue = [];
$.ajax({
url: "/home/GetCount/",
dataType: 'json',
async: false
}).done(function(data) {
data.forEach(function(obj) {
dateValue.push(obj.DateColumn);
countValue.push(obj.Count);
});
});
return {
dateValue: dateValue,
countValue: countValue
};
}
function AutoFollow(data) {
var ctx = document.getElementById("myChart").getContext('2d');
var myChart = new Chart(ctx,
{
type: 'bar',
data: {
labels: data.dateValue, // here i want to show my date value
datasets: [
{
label: 'AutoFollow',
data: data.countValue, // here show my total count date wise
backgroundColor: "rgba(153,255,51,1)"
}, {
label: 'Manual',
data: [30, 29, 5, 5, 20, 3, 10],
backgroundColor: "rgba(255,153,0,1)"
}
]
}
});
}
</script>
============================================= ================================================ ================================================
--------------------------
**As Per Your Request**
--------------------------
型号:
public class MyModel
{
public string DateColumn { get; set; }
public string Lable { get; set; }
public int Count { get; set; }
public static List<MyModel> GetList()
{
return new List<MyModel>
{
new MyModel {DateColumn = "09-05-2017",Count = 10,Lable = "Lable1"},
new MyModel {DateColumn = "10-05-2017",Count = 30,Lable = "Lable1"},
new MyModel {DateColumn = "11-05-2017",Count = 50,Lable = "Lable1"},
new MyModel {DateColumn = "12-05-2017",Count = 10,Lable = "Lable1"},
new MyModel {DateColumn = "13-05-2017",Count = 100,Lable = "Lable1"},
new MyModel {DateColumn = "14-05-2017",Count = 20,Lable = "Lable2"},
new MyModel {DateColumn = "15-05-2017",Count = 10,Lable = "Lable2"},
new MyModel {DateColumn = "16-05-2017",Count = 150,Lable = "Lable2"},
new MyModel {DateColumn = "17-05-2017",Count = 15,Lable = "Lable2"},
new MyModel {DateColumn = "18-05-2017",Count = 11,Lable = "Lable2"},
new MyModel {DateColumn = "19-05-2017",Count = 5,Lable = "Lable2"},
};
}
}
Action :
public JsonResult GetCount()
{
var data = MyModel.GetList()
.GroupBy(s => s.Lable)
.Select(s => new
{
DateColumn = s.Select(d => d.DateColumn),
data = new
{
Lable = s.Key,
Count = s.Select(d => d.Count)
}
}); //Lode data from database
var model = new
{
DateColumn = data.First().DateColumn,
CountColumn = data.Select(s => s.data)
};
return Json(model, JsonRequestBehavior.AllowGet);
}
脚本:
<script type="text/javascript">
$(function() {
var data = getData();
AutoFollow(data);
});
function getData() {
var dateValue ;
var countValue;
$.ajax({
url: "/Chart/GetCount/",
dataType: 'json',
async: false
}).done(function (data) {
dateValue = data.DateColumn;
countValue = data.valueColumn;
});
return {
dateValue: dateValue,
countValue: countValue
};
}
function AutoFollow(data) {
var ctx = document.getElementById("myChart").getContext('2d');
var myChart = new Chart(ctx,
{
type: 'bar',
data: {
labels: data.dateValue, // here i want to show my date value
datasets: [
{
label: data.countValue[0].Lable,
data: data.countValue[0].Count, // here show my total count date wise
backgroundColor: "rgba(153,255,51,1)"
}, {
label: data.countValue[1].Lable,
data: data.countValue[1].Count,
backgroundColor: "rgba(255,153,0,1)"
}
]
}
});
}
</script>
关于javascript - 如何在 mvc c# 中使用 ajax 调用在条形图中绑定(bind)动态数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43863998/