使用反射在异步方法中获取方法名称不会返回预期结果 [英] Using reflection to get method name inside an async method does not return expected result

问题描述

以下是我编写的一小段代码，用以演示此问题的基础.

Following is a tiny snippet of code I wrote to demonstrate the basics of this problem.

private async void Form1_Load( object sender, EventArgs e ) {
    var result = await TestAsyncMethodName();
}

private async Task<string> TestAsyncMethodName() {
    string name = "Method: " + System.Reflection.MethodBase.GetCurrentMethod().Name;

    int x = 0;
    foreach ( StackFrame sf in (new StackTrace()).GetFrames()) {
        x++;
        name = name + "\nStack Frame [" + x + "] : " + sf.GetMethod().Name;
    }

    await Task.Run( () => { name = name + "\nAnonymous Method: " + System.Reflection.MethodBase.GetCurrentMethod().Name; } );

    return name;
}

结果

Method: MoveNext
Stack Frame [1] : MoveNext
Stack Frame [2] : Start
Stack Frame [3] : TestAsyncMethodName
Stack Frame [4] : MoveNext
Stack Frame [5] : Start
Stack Frame [6] : Form1_Load
Stack Frame [7] : OnLoad
Stack Frame [8] : OnCreateControl
Stack Frame [9] : CreateControl
Stack Frame [10] : CreateControl
Stack Frame [11] : WmShowWindow
Stack Frame [12] : WndProc
Stack Frame [13] : WndProc
Stack Frame [14] : WmShowWindow
Stack Frame [15] : WndProc
Stack Frame [16] : OnMessage
Stack Frame [17] : WndProc
Stack Frame [18] : DebuggableCallback
Stack Frame [19] : ShowWindow
Stack Frame [20] : SetVisibleCore
Stack Frame [21] : SetVisibleCore
Stack Frame [22] : set_Visible
Stack Frame [23] : RunMessageLoopInner
Stack Frame [24] : RunMessageLoop
Stack Frame [25] : Run
Stack Frame [26] : Main
Stack Frame [27] : _nExecuteAssembly
Stack Frame [28] : ExecuteAssembly
Stack Frame [29] : RunUsersAssembly
Stack Frame [30] : ThreadStart_Context
Stack Frame [31] : RunInternal
Stack Frame [32] : Run
Stack Frame [33] : Run
Stack Frame [34] : ThreadStart
Anonymous Method: <TestAsyncMethodName>b__0

预期结果

Method: TestAsyncMethodName
Stack Frame [1] : MoveNext
Stack Frame [2] : Start
Stack Frame [3] : TestAsyncMethodName
Stack Frame [4] : MoveNext
Stack Frame [5] : Start
Stack Frame [6] : Form1_Load
Stack Frame [7] : OnLoad
Stack Frame [8] : OnCreateControl
Stack Frame [9] : CreateControl
Stack Frame [10] : CreateControl
Stack Frame [11] : WmShowWindow
Stack Frame [12] : WndProc
Stack Frame [13] : WndProc
Stack Frame [14] : WmShowWindow
Stack Frame [15] : WndProc
Stack Frame [16] : OnMessage
Stack Frame [17] : WndProc
Stack Frame [18] : DebuggableCallback
Stack Frame [19] : ShowWindow
Stack Frame [20] : SetVisibleCore
Stack Frame [21] : SetVisibleCore
Stack Frame [22] : set_Visible
Stack Frame [23] : RunMessageLoopInner
Stack Frame [24] : RunMessageLoop
Stack Frame [25] : Run
Stack Frame [26] : Main
Stack Frame [27] : _nExecuteAssembly
Stack Frame [28] : ExecuteAssembly
Stack Frame [29] : RunUsersAssembly
Stack Frame [30] : ThreadStart_Context
Stack Frame [31] : RunInternal
Stack Frame [32] : Run
Stack Frame [33] : Run
Stack Frame [34] : ThreadStart
Anonymous Method: <TestAsyncMethodName>b__0

参考文献(已完成研究):

StackOverflow

References (Research done):

StackOverflow

• 获取引发异常的方法名称
• 可以使用反射来查找当前正在执行的方法的名称?
• 如何获取代码中的当前方法[重复]

Microsoft

Microsoft

• 推荐答案

  更改

  string name = "Method: " + System.Reflection.MethodBase.GetCurrentMethod().Name;
  

  到

  string name = "Method: " + GetActualAsyncMethodName();
  

  然后将该方法实现为:

  static string GetActualAsyncMethodName([CallerMemberName]string name = null) => name;
  

  这篇关于使用反射在异步方法中获取方法名称不会返回预期结果的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！