windows phone 了解LinearGradientBrush类和RadialGradienBrush类(11)

我们了解到在能在xaml中完成的设计，一般在隐藏文件中也可通过代码完成；本节中的案例是实现对同一设计效果的不同写法；例如在隐藏文件中代码如下：

View Code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;

namespace LinearGB
{
    public partial class MainPage : PhoneApplicationPage
    {
        // 构造函数
        public MainPage()
        {
            InitializeComponent();
            Init();
        }
        private void Init()
        {
            TextBlock tb = new TextBlock();
            tb.Name = "tbName";
            tb.Text = "显示颜色";
            tb.VerticalAlignment = VerticalAlignment.Center;
            tb.HorizontalAlignment = HorizontalAlignment.Center;
            //实例化
            //LinearGradientBrush lgb1 = new LinearGradientBrush();
            LinearGradientBrush lgb2 = new LinearGradientBrush();

            GradientStopCollection gsc = new GradientStopCollection();
            //设置过渡点的颜色和偏移量
            GradientStop gt1 = new GradientStop();
            //Color c = new Color();
            //c.R = 255;
            //c.A = 230;
            //c.G = 22;
            //c.B = 43;
            //gt1.Color=c;
            gt1.Color = Color.FromArgb(255, 164, 143, 112);
            gt1.Offset = 0.2;
            gsc.Add(gt1);

            GradientStop gt2 = new GradientStop();
            //Color c2 = new Color();
            //c2.R = 251;
            //c2.A = 231;
            //c2.G = 12;
            //c2.B = 13;
            //gt2.Color = c2;
            gt2.Color = Color.FromArgb(229, 178, 234, 188);
            gt2.Offset = 0.7;
            gsc.Add(gt2);
            //设置线性渐变色的起始坐标
            Point p1 = new Point(0, 0);
            lgb2.StartPoint = p1;
            //设置线性渐变色的终止坐标
            Point p2 = new Point(1, 1);
            lgb2.EndPoint = p2;
            //设置渐变停止点
            lgb2.GradientStops = gsc;

            //设置前景色
            tb.Foreground = lgb2;

            ContentPanel.Children.Add(tb);
        }
}
}

上面代码实现的效果：