如何在异常中打印完整的堆栈跟踪？

例如，在一处...

//---------------a
try
{
    // some network call
}
catch(WebException we)
{
    throw new MyCustomException("some message ....", we);
}

在另一个地方

//--------------b
try
{
    // invoke code above
}
catch(MyCustomException we)
{
    Debug.Writeline(we.stacktrace);   // <----------------
}

我打印的stacktrace，它仅从a开始到b，它不包括WebException中的内部stacktrace。

我如何打印所有的堆栈跟踪？

我通常对异常使用.ToString（）方法以文本形式显示完整的异常信息（包括内部堆栈跟踪）：

catch (MyCustomException ex)
{
    Debug.WriteLine(ex.ToString());
}

样本输出：

ConsoleApplication1.MyCustomException: some message .... ---> System.Exception: Oh noes!
   at ConsoleApplication1.SomeObject.OtherMethod() in C:\ConsoleApplication1\SomeObject.cs:line 24
   at ConsoleApplication1.SomeObject..ctor() in C:\ConsoleApplication1\SomeObject.cs:line 14
   --- End of inner exception stack trace ---
   at ConsoleApplication1.SomeObject..ctor() in C:\ConsoleApplication1\SomeObject.cs:line 18
   at ConsoleApplication1.Program.DoSomething() in C:\ConsoleApplication1\Program.cs:line 23
   at ConsoleApplication1.Program.Main(String[] args) in C:\ConsoleApplication1\Program.cs:line 13

使用如下函数：

    public static string FlattenException(Exception exception)
    {
        var stringBuilder = new StringBuilder();

        while (exception != null)
        {
            stringBuilder.AppendLine(exception.Message);
            stringBuilder.AppendLine(exception.StackTrace);

            exception = exception.InnerException;
        }

        return stringBuilder.ToString();
    }

然后您可以这样称呼它：

try
{
    // invoke code above
}
catch(MyCustomException we)
{
    Debug.Writeline(FlattenException(we));
}

1.创建方法：如果将异常传递给以下函数，它将为您提供所有导致异常的方法和详细信息。

public string GetAllFootprints(Exception x)
{
        var st = new StackTrace(x, true);
        var frames = st.GetFrames();
        var traceString = new StringBuilder();

        foreach (var frame in frames)
        {
            if (frame.GetFileLineNumber() < 1)
                continue;

            traceString.Append("File: " + frame.GetFileName());
            traceString.Append(", Method:" + frame.GetMethod().Name);
            traceString.Append(", LineNumber: " + frame.GetFileLineNumber());
            traceString.Append("  -->  ");
        }

        return traceString.ToString();
}

2.调用方法：您可以像这样调用方法。

try
{
    // code part which you want to catch exception on it
}
catch(Exception ex)
{
    Debug.Writeline(GetAllFootprints(ex));
}

3.得到结果：

File: c:\MyProject\Program.cs, Method:MyFunction, LineNumber: 29  -->  
File: c:\MyProject\Program.cs, Method:Main, LineNumber: 16  -->