我正在嘗試將圖表匯出為 PNG 檔案（無需在 UI 中呈現），并為LiveCharts v0實作了以下代碼，它作業正常......
LiveCharts.Wpf.CartesianChart control = new LiveCharts.Wpf.CartesianChart()
{
// Series = ...
Width = 700,
Height = 700,
DisableAnimations = true
};
var viewbox = new Viewbox();
viewbox.Child = control;
viewbox.Measure(control.RenderSize);
viewbox.Arrange(new Rect(new System.Windows.Point(0, 0), control.RenderSize));
control.Update(true, true); //force chart redraw
viewbox.UpdateLayout();
var encoder = new PngBitmapEncoder();
var bitmap = new RenderTargetBitmap((int)control.ActualWidth, (int)control.ActualHeight, 96, 96, PixelFormats.Pbgra32);
bitmap.Render(control);
var frame = BitmapFrame.Create(bitmap);
encoder.Frames.Add(frame);
using (Stream stm = File.Create("filename.png"))
encoder.Save(stm);
但是，當我嘗試使用以下代碼為LiveCharts2實作此功能時，我沒有看到任何圖表輸出為 PNG...
CartesianChart visual = new CartesianChart() {
// Series = series,
Height = 700,
Width = 700,
EasingFunction = null
};
var viewbox2 = new Viewbox();
viewbox2.Child = visual;
viewbox2.Measure(visual.RenderSize);
viewbox2.Arrange(new Rect(new System.Windows.Point(0, 0), visual.RenderSize));
visual.CoreChart.Update(new LiveChartsCore.Kernel.ChartUpdateParams() { IsAutomaticUpdate = false, Throttling = false });
viewbox2.UpdateLayout();
var encoder2 = new PngBitmapEncoder();
RenderTargetBitmap bmp = new(700, 700, 96, 96, PixelFormats.Pbgra32);
bmp.Render(visual);
encoder2.Frames.Add(BitmapFrame.Create(bmp));
using (Stream stm = File.Create("filename.png"))
encoder2.Save(stm);
任何人都可以幫助解決這個問題嗎？提前致謝。
uj5u.com熱心網友回復：
在這里找到答案： https ://github.com/beto-rodriguez/LiveCharts2/discussions/725#discussioncomment-4030202
var skChart = new SKCartesianChart(chartControl) { Width = 900, Height = 600, };
skChart.SaveImage("CartesianImageFromControl.png");
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標籤：C＃wpf实时图表