WPF開發
WPF主要用在開發介面，WPF的開發上可以運用XAML、C#兩種語言來做開發，最簡單的程式就是畫直線，畫直線有兩種方法:
XAML
<Canvas Height="300" Width="300"> ///Canvas是排版方式，Height、Width設定這塊區域的大小，Canvas內每一個子元件都需要設定位置
<Line ///畫線用語法
X1="10" Y1="60" ///設定線的起點位置
X2="150" Y2="60" ///設定線的終點位置
Stroke="Black" ///設定線的顏色
StrokeThickness="4"/> ///線的粗細程度
</Canvas>
C#
myLine = new Line(); ///建立一個線段的物件
myLine.Stroke = System.Windows.Media.Brushes.LightSteelBlue; ///將線的顏色實心填滿淺藍色(#FFB0C4DE)
myLine.X1 = 1;
myLine.X2 = 50;
myLine.Y1 = 1;
myLine.Y2 = 50; ///設線起點和終點位置
myLine.HorizontalAlignment = HorizontalAlignment.Left; ///水平對齊，向左對齊
myLine.VerticalAlignment = VerticalAlignment.Center; ///垂直對齊，置中
myLine.StrokeThickness = 2; ///線的粗細程度
myGrid.Children.Add(myLine); ///放入myLine物件進myGrid容器，myGrid可以將物件放入同個位置，但有深度上的不同
顯示:
用滑鼠拉出直線
C#
using System;///允許空間 using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; ///允許空間使用類別 using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes;
namespace WpfApplication1///宣告範圍 { /// <summary> /// MainWindow.xaml 的互動邏輯 /// </summary> public partial class MainWindow : Window { public MainWindow() { InitializeComponent();///初始化組件
}
private void Button_Click(object sender, RoutedEventArgs e)///當Button_Click事件觸發 { Line myLine = new Line(); ///建立一個新的線 myLine.Stroke = System.Windows.Media.Brushes.LightSteelBlue; ///將線的顏色實心填滿淺藍色(#FFB0C4DE) myLine.X1 = 1; ///設定線x軸的起點位置 myLine.X2 = 50; ///設定線x軸的終點位置 myLine.Y1 = 1; ///設定線y軸的起點位置 myLine.Y2 = 50; ///設定線 y軸的終點位置 myLine.HorizontalAlignment = HorizontalAlignment.Left;///置左 myLine.VerticalAlignment = VerticalAlignment.Center;///置中 myLine.StrokeThickness = 20;///設定圖形外框的厚度粗細20 myGrid.Children.Add(myLine); ///放入myLine物件進myGrid容器，myGrid可以將物件放入同個位置，但有深度上的不同
}
Point pos; ///宣告點pos Line currentLine =null; ///設線段為空值
private void mycanvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) ///當按下滑鼠左鍵事件發生 { pos = e.GetPosition(mycanvas); ///設點pos為滑鼠游標的位置 }
private void mycanvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) ///當放開滑鼠左鍵事件發生 {
currentLine = null; ///設線currentLine為空值
}
private void mycanvas_MouseMove(object sender, MouseEventArgs e) ///當滑鼠移動事件發生 { Point pos2 = e.GetPosition(mycanvas); ///設點pos2為滑鼠游標的位置
bool mouseIsDown = System.Windows.Input.Mouse.LeftButton == MouseButtonState.Pressed; if (mouseIsDown) { if (currentLine == null) ///如果線段currentLine為空值 { currentLine = new Line();///建立一個線名currentLine currentLine.Stroke = System.Windows.Media.Brushes.Red; ///將線的顏色實心填滿為紅色 currentLine.X1 = pos.X; ///設線currentLine起點X值等於pos的X值 currentLine.X2 = pos2.X; ///設線currentLine終點X值等於pos2的X值 currentLine.Y1 = pos.Y; ///設線currentLine起點Y值等於pos的Y值 currentLine.Y2 = pos2.Y; ///設線currentLine終點Y值等於pos2的Y值 currentLine.StrokeThickness = 5; ///設線currentLine的粗細程度為5 mycanvas.Children.Add(currentLine); } else { currentLine.X1 = pos.X; ///設線currentLine起點X值等於pos的X值 currentLine.X2 = pos2.X; ///設線currentLine終點X值等於pos2的X值 currentLine.Y1 = pos.Y; ///設線currentLine起點Y值等於pos的Y值 currentLine.Y2 = pos2.Y; ///設線currentLine終點Y值等於pos2的Y值
} } } } }
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