请问有人使用visifire图表么，我有个关于Datapoint以及MultiBinding的问题

2016-06-22 10:28:26 309 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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如果我简单绑定

<Charts:DataSeries RenderAs="Line" Color="Red" MarkerEnabled="False" ShadowEnabled="False" Bevel="False">
<Charts:DataSeries.DataPoints>
<Charts:DataPoint XValue="{Binding ManualGateABegin}" YValue="{Binding ManualGateALevel}" Enabled="{Binding IsChecked,ElementName=autoCheckBox}"/>
<Charts:DataPoint XValue="{Binding ManualGateAEnd}" YValue="{Binding ManualGateALevel ,Converter={StaticResource aosoc},ConverterParameter=true}" Enabled="{Binding IsChecked,ElementName=autoCheckBox}"/>
</Charts:DataSeries.DataPoints>
</Charts:DataSeries>

得到的结果是正确的

但是我使用MulitBinding绑定时，就画不出曲线了

<Charts:DataSeries RenderAs="Line" Color="Red" MarkerEnabled="False" ShadowEnabled="False" Bevel="False">
<Charts:DataSeries.DataPoints>
<Charts:DataPoint >
<Charts:DataPoint.AxisXLabel>
<MultiBinding Converter="{StaticResource gab}">
<Binding Path="IsChecked" ElementName="autoCheckBox" />
<Binding Path="D"/>
<Binding Path="S2"/>
<Binding Path="ManualGateABegin"/>
</MultiBinding>
</Charts:DataPoint.AxisXLabel>
<Charts:DataPoint.YValue>
<MultiBinding Converter="{StaticResource gl}">
<Binding Path="IsChecked" ElementName="autoCheckBox" />
<Binding Path="AutoGateALevel"/>
<Binding Path="ManualGateALevel"/>
</MultiBinding>
</Charts:DataPoint.YValue>
</Charts:DataPoint>
<Charts:DataPoint>
<Charts:DataPoint.AxisXLabel>
<MultiBinding Converter="{StaticResource gae}">
<Binding Path="IsChecked" ElementName="autoCheckBox" />
<Binding Path="D"/>
<Binding Path="S2"/>
<Binding Path="ManualGateAEnd"/>
</MultiBinding>
</Charts:DataPoint.AxisXLabel>
<Charts:DataPoint.YValue>
<MultiBinding Converter="{StaticResource gl}">
<Binding Path="IsChecked" ElementName="autoCheckBox" />
<Binding Path="AutoGateALevel"/>
<Binding Path="ManualGateALevel"/>
</MultiBinding>
</Charts:DataPoint.YValue>
</Charts:DataPoint>
</Charts:DataSeries.DataPoints>
</Charts:DataSeries>

IMultiValueConverter 应该没有问题都有返回值

public class GateABeginForLossenConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
int result = 0;
bool auto = System.Convert.ToBoolean(values[0]);

if (auto)
result = System.Convert.ToInt32(values[2]);
else
result = System.Convert.ToInt32(values[3]);

return result;
}

我不明白这是为什么，难道visifire datapoint 只能valuebinding，不能multibinding 么

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