WPF绘制折线
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原文:WPF绘制折线WPF后台绘制折线,填充到一个GRID下
private void btnPreview_Click(object sender, RoutedEventArgs e) { GridImg.Children.Clear(); System.Drawing.Point p0 = new System.Drawing.Point(0, 0); System.Drawing.Point p1 = new System.Drawing.Point(0, 0); System.Drawing.Point p2 = new System.Drawing.Point(0, 0); System.Drawing.Point p3 = new System.Drawing.Point(0, 0); int x1 = Convert.ToInt32(txta1.Text); int y1 = Convert.ToInt32(txtb1.Text); int x2 = Convert.ToInt32(txta2.Text); int y2 = Convert.ToInt32(txtb2.Text); p0.X = 0; p0.Y = 255; p1.X = x1; p1.Y = 255 - y1; p2.X = x2; p2.Y = 255 - y2; p3.X = 255; p3.Y = 0; Line LX = new Line();//X轴 LX.X1 = 0; LX.X2 = 255; LX.Y1 = 255; LX.Y2 = 255; LX.StrokeThickness = 1; LX.Stroke = System.Windows.Media.Brushes.Black; Line LY = new Line();//Y轴 LY.X1 = 0; LY.X2 = 0; LY.Y1 = 0; LY.Y2 = 255; LY.StrokeThickness = 1; LY.Stroke = System.Windows.Media.Brushes.Black; Polyline PL = new Polyline();//绘制折线 PointCollection collection = new PointCollection(); collection.Add(new System.Windows.Point(p0.X, p0.Y)); collection.Add(new System.Windows.Point(p1.X, p1.Y)); collection.Add(new System.Windows.Point(p2.X, p2.Y)); collection.Add(new System.Windows.Point(p3.X, p3.Y)); PL.Points = collection; PL.Stroke = new SolidColorBrush(Colors.Red); PL.StrokeThickness = 1; GridImg.Children.Add(LX); GridImg.Children.Add(LY); GridImg.Children.Add(PL); }
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