C# Google图表json数据未加载
我正在使用ASP.NETMVC和GoogleCharts尝试生成一个包含两条数据记录的简单折线图。我正在成功地从数据库中提取数据,但数据没有显示在图表上。数据由两个记录组成,两个字段为:C# Google图表json数据未加载,c#,ajax,json,asp.net-mvc,google-visualization,C#,Ajax,Json,Asp.net Mvc,Google Visualization,我正在使用ASP.NETMVC和GoogleCharts尝试生成一个包含两条数据记录的简单折线图。我正在成功地从数据库中提取数据,但数据没有显示在图表上。数据由两个记录组成,两个字段为:WeekOfEntry(日期时间)和Weight(十进制)。图表出现,但数据点不在那里。我猜我的数据格式不正确 以下是我的javascript: <script type="text/javascript"> //Load the Visualization API library and
WeekOfEntry
(日期时间)和Weight
(十进制)。图表出现,但数据点不在那里。我猜我的数据格式不正确
以下是我的javascript:
<script type="text/javascript">
//Load the Visualization API library and the linechart library.
google.load('visualization', '1.0', { 'packages': ['corechart'] });
//Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawLoseATonLineChart);
//Callback that creates and populates a data table, instantiates the line chart,
//passes in the data, and draws it.
function drawLoseATonLineChart() {
var url = "@Url.Action("GetChartStatistics")";
var jsonData = $.ajax({
method: 'GET',
url: url,
dataType: 'JSON',
async: false
}).responseText;
var data = new google.visualization.DataTable();
data.addColumn('string', 'WeekOfEntry');
data.addColumn('number', 'Weight');
for (var i = 0; i < data.length; i++) {
data.addRow([jsonData[i].WeekOfEntry, jsonData[i].Weight]);
}
var options = {
title: 'Weight Progression',
legend: {
position: 'right',
alignment: 'center'
},
vAxis: {
title: 'Weight'
},
hAxis: {
title: 'Week',
slantedText: true,
slantedTextAngle: 45
},
colors: ['E81A00']
};
var chart = new google.visualization.LineChart(document.getElementById('lose-a-ton-line-chart'));
chart.draw(data, options);
}
</script>
编辑:以下是我的JSON数据返回时的格式:
“[{“权重”:190.0,“WeekOfEntry”:“\/Date(1431921600000)\/”},{“权重”:121.0,“WeekOfEntry”:“\/Date(143252640000)\/”}”
你知道为什么没有加载数据吗 您是否尝试过arrayToDataTable函数,而不是循环处理JSON数据
var dataTableData = google.visualization.arrayToDataTable(JSON.parse(jsonData));
您是否尝试过arrayToDataTable函数,而不是遍历JSON数据
var dataTableData = google.visualization.arrayToDataTable(JSON.parse(jsonData));
您是否尝试过arrayToDataTable函数,而不是遍历JSON数据
var dataTableData = google.visualization.arrayToDataTable(JSON.parse(jsonData));
您是否尝试过arrayToDataTable函数,而不是遍历JSON数据
var dataTableData = google.visualization.arrayToDataTable(JSON.parse(jsonData));
您的for循环中有一个问题。这是你修改过的代码
//Load the Visualization API library and the linechart library.
google.load('visualization', '1.0', { 'packages': ['corechart'] });
//Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawLoseATonLineChart);
var url = "@Url.Action("GetChartStatistics")";
var result = $.ajax({
method: 'GET',
url: url,
dataType: 'JSON',
async: false
});
var jsonData = result.responseText;
var data = new google.visualization.DataTable();
data.addColumn('string', 'WeekOfEntry');
data.addColumn('number', 'Weight');
$.each(JSON.parse(jsonData), function (index, obj) {
data.addRow([obj.WeekOfEntry, obj.Weight]);
});
var options = {
title: 'Weight Progression',
legend: {
position: 'right',
alignment: 'center'
},
vAxis: {
title: 'Weight'
},
hAxis: {
title: 'Week',
slantedText: true,
slantedTextAngle: 45
},
colors: ['E81A00']
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
public JsonResult GetChartStatistics()
{
var lineChartData = new List<LineChartData>() {
new LineChartData() { WeekOfEntry = "sat", Weight = 1},
new LineChartData() { WeekOfEntry = "sat1", Weight = 2},
new LineChartData() { WeekOfEntry = "sat2", Weight = 3},
new LineChartData() { WeekOfEntry = "sat3", Weight = 4},
};
return Json(lineChartData, JsonRequestBehavior.AllowGet);
}
//加载可视化API库和折线图库。
load('visualization','1.0',{'packages':['corechart']});
//将回调设置为在加载Google Visualization API时运行。
setOnLoadCallback(drawLoseATonLineChart);
var url=“@url.Action”(“GetChartStatistics”);
var result=$.ajax({
方法:“GET”,
url:url,
数据类型:“JSON”,
异步:false
});
var jsonData=result.responseText;
var data=new google.visualization.DataTable();
data.addColumn('string','WeekOfEntry');
data.addColumn('number','Weight');
$.each(JSON.parse(jsonData),函数(index,obj){
data.addRow([obj.WeekOfEntry,obj.Weight]);
});
变量选项={
标题:“体重进展”,
图例:{
位置:'右',
对齐:“中心”
},
言辞:{
标题:“重量”
},
哈克斯:{
标题:"一周",,
是的,
倾斜角度:45
},
颜色:['E81A00']
};
var chart=new google.visualization.LineChart(document.getElementById('chart_div'));
图表绘制(数据、选项);
公共JsonResult GetChartStatistics()
{
var lineChartData=新列表(){
新建LineChartData(){WeekOfEntry=“sat”,权重=1},
新建LineChartData(){WeekOfEntry=“sat1”,权重=2},
新建LineChartData(){WeekOfEntry=“sat2”,权重=3},
新建LineChartData(){WeekOfEntry=“sat3”,权重=4},
};
返回Json(lineChartData,JsonRequestBehavior.AllowGet);
}
您的for循环中有一个问题。这是你修改过的代码
//Load the Visualization API library and the linechart library.
google.load('visualization', '1.0', { 'packages': ['corechart'] });
//Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawLoseATonLineChart);
var url = "@Url.Action("GetChartStatistics")";
var result = $.ajax({
method: 'GET',
url: url,
dataType: 'JSON',
async: false
});
var jsonData = result.responseText;
var data = new google.visualization.DataTable();
data.addColumn('string', 'WeekOfEntry');
data.addColumn('number', 'Weight');
$.each(JSON.parse(jsonData), function (index, obj) {
data.addRow([obj.WeekOfEntry, obj.Weight]);
});
var options = {
title: 'Weight Progression',
legend: {
position: 'right',
alignment: 'center'
},
vAxis: {
title: 'Weight'
},
hAxis: {
title: 'Week',
slantedText: true,
slantedTextAngle: 45
},
colors: ['E81A00']
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
public JsonResult GetChartStatistics()
{
var lineChartData = new List<LineChartData>() {
new LineChartData() { WeekOfEntry = "sat", Weight = 1},
new LineChartData() { WeekOfEntry = "sat1", Weight = 2},
new LineChartData() { WeekOfEntry = "sat2", Weight = 3},
new LineChartData() { WeekOfEntry = "sat3", Weight = 4},
};
return Json(lineChartData, JsonRequestBehavior.AllowGet);
}
//加载可视化API库和折线图库。
load('visualization','1.0',{'packages':['corechart']});
//将回调设置为在加载Google Visualization API时运行。
setOnLoadCallback(drawLoseATonLineChart);
var url=“@url.Action”(“GetChartStatistics”);
var result=$.ajax({
方法:“GET”,
url:url,
数据类型:“JSON”,
异步:false
});
var jsonData=result.responseText;
var data=new google.visualization.DataTable();
data.addColumn('string','WeekOfEntry');
data.addColumn('number','Weight');
$.each(JSON.parse(jsonData),函数(index,obj){
data.addRow([obj.WeekOfEntry,obj.Weight]);
});
变量选项={
标题:“体重进展”,
图例:{
位置:'右',
对齐:“中心”
},
言辞:{
标题:“重量”
},
哈克斯:{
标题:"一周",,
是的,
倾斜角度:45
},
颜色:['E81A00']
};
var chart=new google.visualization.LineChart(document.getElementById('chart_div'));
图表绘制(数据、选项);
公共JsonResult GetChartStatistics()
{
var lineChartData=新列表(){
新建LineChartData(){WeekOfEntry=“sat”,权重=1},
新建LineChartData(){WeekOfEntry=“sat1”,权重=2},
新建LineChartData(){WeekOfEntry=“sat2”,权重=3},
新建LineChartData(){WeekOfEntry=“sat3”,权重=4},
};
返回Json(lineChartData,JsonRequestBehavior.AllowGet);
}
您的for循环中有一个问题。这是你修改过的代码
//Load the Visualization API library and the linechart library.
google.load('visualization', '1.0', { 'packages': ['corechart'] });
//Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawLoseATonLineChart);
var url = "@Url.Action("GetChartStatistics")";
var result = $.ajax({
method: 'GET',
url: url,
dataType: 'JSON',
async: false
});
var jsonData = result.responseText;
var data = new google.visualization.DataTable();
data.addColumn('string', 'WeekOfEntry');
data.addColumn('number', 'Weight');
$.each(JSON.parse(jsonData), function (index, obj) {
data.addRow([obj.WeekOfEntry, obj.Weight]);
});
var options = {
title: 'Weight Progression',
legend: {
position: 'right',
alignment: 'center'
},
vAxis: {
title: 'Weight'
},
hAxis: {
title: 'Week',
slantedText: true,
slantedTextAngle: 45
},
colors: ['E81A00']
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
public JsonResult GetChartStatistics()
{
var lineChartData = new List<LineChartData>() {
new LineChartData() { WeekOfEntry = "sat", Weight = 1},
new LineChartData() { WeekOfEntry = "sat1", Weight = 2},
new LineChartData() { WeekOfEntry = "sat2", Weight = 3},
new LineChartData() { WeekOfEntry = "sat3", Weight = 4},
};
return Json(lineChartData, JsonRequestBehavior.AllowGet);
}
//加载可视化API库和折线图库。
load('visualization','1.0',{'packages':['corechart']});
//将回调设置为在加载Google Visualization API时运行。
setOnLoadCallback(drawLoseATonLineChart);
var url=“@url.Action”(“GetChartStatistics”);
var result=$.ajax({
方法:“GET”,
url:url,
数据类型:“JSON”,
异步:false
});
var jsonData=result.responseText;
var data=new google.visualization.DataTable();
data.addColumn('string','WeekOfEntry');
data.addColumn('number','Weight');
$.each(JSON.parse(jsonData),函数(index,obj){
data.addRow([obj.WeekOfEntry,obj.Weight]);
});
变量选项={
标题:“体重进展”,
图例:{
位置:'右',
对齐:“中心”
},
言辞:{
标题:“重量”
},
哈克斯:{
标题:"一周",,
是的,
倾斜角度:45
},
颜色:['E81A00']
};
var chart=new google.visualization.LineChart(document.getElementById('chart_div'));
图表绘制(数据、选项);
公共JsonResult GetChartStatistics()
{
var lineChartData=新列表(){
新建LineChartData(){WeekOfEntry=“sat”,权重=1},
新建LineChartData(){WeekOfEntry=“sat1”,权重=2},
新建LineChartData(){WeekOfEntry=“sat2”,权重=3},
新建LineChartData(){WeekOfEntry=“sat3”,权重=4},
};
返回Json(lineChartData,JsonRequestBehavior.AllowGet);
}
您的for l中有一个问题