C# WPF This用法详解(经典)（c#开发wpf）

using System.Text;
namespace Caliburn.Micro.Hello.ViewModels{
 public class ThisUsageViewModel : Screen, IViewModel { private StringBuilder stringBuilder = new StringBuilder(); public string DisplayInfo { get; set; } public ThisUsageViewModel() { DisplayName = "ThisUsageViewModel"; DisplayInfo = "【1】this is ctor one"; stringBuilder.AppendLine(DisplayInfo); DisplayInfo = "【2】this is ctor two"; stringBuilder.AppendLine(DisplayInfo);
 DisplayInfo = "【3】this is CallMember"; CallMember(DisplayInfo);
 stringBuilder.AppendLine(TestHelper.ObjectTransfer(this));//用法4:将对象作为参数传递
 DisplayInfo = stringBuilder.ToString(); }
 /// <summary> /// 用法1:构造函数串联执行 /// </summary> /// <param name="flag"></param> public ThisUsageViewModel(bool flag) : this() {
 }
 public void CallMember(string DisplayInfo) { this.DisplayInfo = DisplayInfo;//用法2:通过this区分传参和类中全局的定义 stringBuilder.AppendLine(this.DisplayInfo);
 this.ExtensionMethod(); }
 public void ExtensionMethod() { double aHeight = 175; double bHeight = 1.82; stringBuilder.AppendLine($"【4】{aHeight.CMToM()}"); stringBuilder.AppendLine($"【5】{bHeight.MToCM()}"); }
 }
 /// <summary> /// 用法3:方法扩展类 /// </summary> public static class DoubleExtension { public static double MToCM(this double value) { return value * 100; }
 public static double CMToM(this double value) { return value / 100; } }
 public class TestHelper { public static string ObjectTransfer(ThisUsageViewModel thisUsageView) { thisUsageView.DisplayInfo = "【6】this is Object Transfer"; return thisUsageView.DisplayInfo; } }}

 stringBuilder.AppendLine(TestHelper.ObjectTransfer(this));//用法4:将对象作为参数传递