Infragistics数据绑定

Question

我有一个实验的总数，每个实验可以在6个状态。我想使用XamChart将此数据表示为饼形图。

如何将状态X中的实验数量绑定到饼的一部分？特征浏览器在这里没有多大帮助。

Answer 1

我所做的是将值绑定到数值。为了在内置图例中显示这些数字，我使用了标签，但我的数据绑定是到一个字符串，该字符串是这样连接的：

string RuningLabel = `"Running, " + NumRunning`;

XAML：

 <igCa:XamChart.Series>
                    <igCa:Series ChartType="Pie">
                        <igCa:Series.DataPoints>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumWaiting}" Label="{Binding Path=InfoHelper.WaitingLabel}" Fill="Yellow"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumAssigned}" Label="{Binding Path=InfoHelper.AssignedLabel}" Fill="LightPink"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumRunning}" Label="{Binding InfoHelper.RunningLabel}" Fill="Orange"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumPassed}" Label="{Binding InfoHelper.PassedLabel}" Fill="Green"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumFailed}" Label="{Binding Path=InfoHelper.FailedLabel}" Fill="DarkRed"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumOnHold}" Label="{Binding InfoHelper.OnholdLabel}" Fill="DarkGray"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumRemoved}" Label="{Binding InfoHelper.RemovedLabel}" Fill="LightBlue"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumStopped}" Label="{Binding InfoHelper.StoppedLabel}" Fill="CornflowerBlue"/>
                            <igCa:DataPoint Value="{Binding ActivityStatus.NumStuck}" Label="{Binding InfoHelper.StuckLabel}" Fill="DarkKhaki"/>
                        </igCa:Series.DataPoints>
                    </igCa:Series>
                </igCa:XamChart.Series>

Answer 2

您需要一个列表，其中包含这些状态的状态和值，然后将其用作系列的数据源。下面是一个使用DataTable的简单示例：

void Window1_Loaded(object sender, RoutedEventArgs e)
{
    Series s = new Series()
    {
        DataSource = TestData(5).DefaultView,
        DataMapping = "Value = Col_3; Label = Col_1",
        ChartType = ChartType.Pie,
        Label = "Series 1"
    };
    this.xamChart1.Series.Add(s);
}

private DataTable TestData(int rows)
{
    DataTable dtData = new DataTable("TestData");

    dtData.Columns.Add("Col_1", typeof(string));
    dtData.Columns.Add("Col_3", typeof(int));

    for (int i = 1; i <= rows; i++)
    {
        DataRow dr = dtData.NewRow();

        dr["Col_1"] = "Row " + i.ToString();
        dr["Col_3"] = i;

        dtData.Rows.Add(dr);
    }

    return dtData;
}

DataMapping属性决定了值和标签是什么。在本例中，XamChart是用XAML创建的，具有以下标记：

<igCA:XamChart Name="xamChart1"/>