WPF怎么重绘窗体

如题所述

放到Convas里就好了
或者：
MyVisualHost visualHostIRBin = new MyVisualHost（);
CanvasIRBin.Children.Add(MyVisualHost);

public class MyVisualHost : FrameworkElement
{
// 创建子元素的集合私有变量
private VisualCollection _children;
//构造函数中添加DrawingVisual对象 Mapping
public MyVisualHost(List<CL.DataMapping> listFileBODY,string Item)
{
_children = new VisualCollection(this);
_children.Add(CreateDrawingVisualRectangle(listFileBODY, Item));
//添加MouseLeftButtonUp事件处理器
this.MouseLeftButtonUp += new MouseButtonEventHandler(MyVisualHost_MouseLeftButtonUp);
this.MouseMove+=MyVisualHost_MouseMove;
}
｝
private DrawingVisual CreateDrawingVisualRectangle(List<CL.DataMapping> listFileBODY, string Item)
{
DrawingVisual drawingVisual = new DrawingVisual();
// 获取DrawingContext以便于创建一个绘图上下文
DrawingContext drawingContext = drawingVisual.RenderOpen();
#region 绘制矩形阵列
for (int i = 0; i < listFileBODY.Count; i++) //遍历所有芯片
{
PosXCanvas = (listFileBODY[i].PosX - PosXmin) / PosXMinDvalue;//Canvas坐标
PosYCanvas = (listFileBODY[i].PosY - PosYmin) / PosYMinDvalue;//Canvas坐标
Rect rect = new Rect(new Point(PosXCanvas, PosYCanvas), new Size(1, 1));//坐标为原点，向下向右填充颜色。
ColorConverter ColorConverter=new System.Windows.Media.ColorConverter();

#region 根据Mapping项目，调用颜色
if (Item == "IR")
{
//Color color=
SolidColorBrush = new SolidColorBrush(Color.FromArgb(listFileBODY[i].IRcolor.A, listFileBODY[i].IRcolor.R, listFileBODY[i].IRcolor.G, listFileBODY[i].IRcolor.B));
}
if (Item == "VF")
{
SolidColorBrush = new SolidColorBrush(Color.FromArgb(listFileBODY[i].VF1color.A, listFileBODY[i].VF1color.R, listFileBODY[i].VF1color.G, listFileBODY[i].VF1color.B));

}
if (Item == "LOP")
{
SolidColorBrush = new SolidColorBrush(Color.FromArgb(listFileBODY[i].LOP1color.A, listFileBODY[i].LOP1color.R, listFileBODY[i].LOP1color.G, listFileBODY[i].LOP1color.B));
}
if (Item == "WLD")
{
SolidColorBrush = new SolidColorBrush(Color.FromArgb(listFileBODY[i].WLD1color.A, listFileBODY[i].WLD1color.R, listFileBODY[i].WLD1color.G, listFileBODY[i].WLD1color.B));
}
#endregion

drawingContext.DrawRectangle(SolidColorBrush, (Pen)null, rect);
}
#endregion
// 保存绘图上下
drawingContext.Close();
return drawingVisual;
}

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