C# 的Brush 及相关颜色的操作

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            // (实心刷)
                  Rectangle rect1 = new Rectangle(20, 80, 250, 100);
                  SolidBrush sbrush1 = new SolidBrush(Color.DarkOrchid);
                  SolidBrush sbrush2 = new SolidBrush(Color.Aquamarine);
                  SolidBrush sbrush3 = new SolidBrush(Color.DarkOrange);

　　　　//(梯度刷)
       LinearGradientBrush lbrush1 = new LinearGradientBrush(rect1,
       Color.DarkOrange, Color.Aquamarine,
       LinearGradientMode.BackwardDiagonal);

               //(阴影刷)
                 HatchBrush hbrush1 = new HatchBrush(HatchStyle.DiagonalCross,
                  Color.DarkOrange, Color.Aquamarine);
                  HatchBrush hbrush2 = new HatchBrush(HatchStyle.DarkVertical,
                  Color.DarkOrange, Color.Aquamarine);
                  HatchBrush hbrush3 = new HatchBrush(HatchStyle.LargeConfetti,
                  Color.DarkOrange, Color.Aquamarine);

                 //(纹理刷)
                  textureBrush = new TextureBrush(new Bitmap("e:\123.bmp"));
                  e.Graphics.FillRectangle(lbrush1, rect1);

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using System.Windows.Media;

1、String转换成Color

Color color = (Color)ColorConverter.ConvertFromString(string);

2、String转换成Brush

BrushConverter brushConverter = new BrushConverter();
Brush brush = (Brush)brushConverter.ConvertFromString(string);

3、Color转换成Brush

Brush brush = new SolidColorBrush(color));

4、Brush转换成Color有两种方法：

（1）先将Brush转成string，再转成Color。

Color color= (Color)ColorConverter.ConvertFromString(brush.ToString());

（2）将Brush转成SolidColorBrush，再取Color。

Color color= ((SolidColorBrush)CadColor.Background).Color;

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