[英]c# bind winforms chart to list of objects
I have a list of objects defined like this: 我有这样定义的对象列表:
public class ChartData
{
public int New
{
get;
set;
}
public int Closed
{
get;
set;
}
public int Canceled
{
get;
set;
}
}
How can I bind a winforms-chart (bar-chart type) to a List<ChartData>
? 如何将winforms-chart(条形图类型)绑定到List<ChartData>
? I need to have a series for each property in the object (ie, I will have 3 series) and for each point in the chart, I want to see the values for all 3 properties in the object. 我需要为对象中的每个属性创建一个序列(即,我将拥有3个序列),并且对于图表中的每个点,我都希望查看对象中所有3个属性的值。
I managed to programatically add the series (they're visible in the chart), but when I try to set the data source, it crashes: 我设法以编程方式添加了该系列(它们在图表中可见),但是当我尝试设置数据源时,它崩溃了:
List<ChartData> data = new List<ChartData>();
// fill with random int values
chart.DataSource = data;
chart.Series.Add("New").XValueMember = "New";
chart.Series["New"].ChartType = SeriesChartType.Bar;
chart.Series["New"].XValueType = ChartValueType.Int32;
chart.Series["New"].YValueType = ChartValueType.Int32;
chart.Series.Add("Canceled").XValueMember = "Canceled";
chart.Series["Canceled"].ChartType = SeriesChartType.Bar;
chart.Series["Canceled"].XValueType = ChartValueType.Int32;
chart.Series["Canceled"].YValueType = ChartValueType.Int32;
chart.Series.Add("Closed").XValueMember = "Closed";
chart.Series["Closed"].ChartType = SeriesChartType.Bar;
chart.Series["Closed"].XValueType = ChartValueType.Int32;
chart.Series["Closed"].YValueType = ChartValueType.Int32;
chart.DataBind();
with an System.ArgumentOutOfRangeException
, saying that Data points insertion error. Only 1 Y values can be set for this data series.
System.ArgumentOutOfRangeException
,表示Data points insertion error. Only 1 Y values can be set for this data series.
Data points insertion error. Only 1 Y values can be set for this data series.
... ...
Any help/hint? 有帮助/提示吗?
Replace XValueMember
with YValueMembers
: 将XValueMember
替换为YValueMembers
:
chart.Series.Add("New").YValueMembers = "New";
chart.Series["New"].ChartType = SeriesChartType.Bar;
chart.Series["New"].XValueType = ChartValueType.Int32;
chart.Series["New"].YValueType = ChartValueType.Int32;
chart.Series.Add("Canceled").YValueMembers = "Canceled";
chart.Series["Canceled"].ChartType = SeriesChartType.Bar;
chart.Series["Canceled"].XValueType = ChartValueType.Int32;
chart.Series["Canceled"].YValueType = ChartValueType.Int32;
chart.Series.Add("Closed").YValueMembers = "Closed";
chart.Series["Closed"].ChartType = SeriesChartType.Bar;
chart.Series["Closed"].XValueType = ChartValueType.Int32;
chart.Series["Closed"].YValueType = ChartValueType.Int32;
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