使用什么数据可视化控件在 LINQPad 中呈现结果？

Question

使用什么数据可视化控件在 LINQPad 中呈现结果？或者是否有其他方法可以在 .NET 中显示分层数据？

Answer 1

LINQPad 使用 WebBrowser 控件来动态显示生成的 HTML 页面。您甚至可以通过右键单击结果窗口来查看其源代码。所以它基本上是 Internet Explorer 的包装。就 HTML 的生成而言，它使用自定义构建的 XhtmlFormatter 来访问对象图并基于 XDocument 发出 XHTML。

Answer 2

LINQPad 还可以调用 Windows 窗体附带的所有旧 Dundas 图表控件。只需转储任何 Bitmap 对象，LINQPad 就会尽职尽责地将其显示在 HTML 中。尝试以下操作，确保您有 System.Drawing、System.Windows.Forms 和 System.Windows.Forms.DataVisualization，您的F4引用，粘贴并点击F5。它还适用于更高级别的 SHO 图表，这些图表是为 IronPython 定制的，但效果很好来自 C#。

// Almost the smallest meaningful example of Charting
void Main()
{
    // Chart must have a chart area, but it's not externally referenced later
    var chartArea1 = new ChartArea();
    var chart1 = new Chart();
    chart1.ChartAreas.Add(chartArea1);

    var series1 = new Series();

    // The following goes beyond the minimal, but just a little. You can delete these two lines.
    // Fun to set the series ChartType; default is column chart
    series1.ChartType = SeriesChartType.Pie;
    series1.CustomProperties = "LabelsRadialLineSize=1, PieDrawingStyle=Concave, LabelStyle=outside";

    var r = new Random(Guid.NewGuid().GetHashCode());
    var ys = Enumerable.Range(0, 5).Select (e => r.NextDouble()).Dump("Doubles");
    var xs = Enumerable.Range(0, 5).Select (e => GetRandomString(3).ToUpper()).Dump("Strings");
    series1.Points.DataBindXY(xs.ToArray(), ys.ToArray());
    chart1.Series.Add(series1);

    var b = new Bitmap(width: chart1.Width, height: chart1.Height);
    chart1.DrawToBitmap(b, chart1.Bounds);
    b.Dump();

    var frm = new Form();
    // Seems 300 x 300 is the default chart-area size and chart size, so set the form to hold it
    frm.ClientSize = new Size(width: 300, height: 300);
    frm.Controls.Add(chart1);

    Application.Run(frm);
}

static IEnumerable<string> CharRange(Char c, int length)
{
    return (from e in Enumerable.Range(Convert.ToInt32(c), length)
            select Char.ConvertFromUtf32(e));
}

static string GetRandomString(int length)
{
    var sb = new StringBuilder();
    do
        sb.Append(Path.GetRandomFileName().Replace(".", "").Substring(0, length < 11 ? length : 11));
    while ((length -= 11) > 0);
    return sb.ToString();
}