StackTrace Class
Assembly: mscorlib (in mscorlib.dll)
'Declaration <SerializableAttribute> _ <ComVisibleAttribute(True)> _ Public Class StackTrace 'Usage Dim instance As StackTrace
/** @attribute SerializableAttribute() */ /** @attribute ComVisibleAttribute(true) */ public class StackTrace
SerializableAttribute ComVisibleAttribute(true) public class StackTrace
StackTrace information will be most informative with Debug build configurations. By default, Debug builds include debug symbols, while Release builds do not. The debug symbols contain most of the file, method name, line number, and column information used in constructing StackFrame and StackTrace objects.
StackTrace might not report as many method calls as expected, due to code transformations that occur during optimization.
The following console application demonstrates how to create a simple StackTrace and iterate through its frames to obtain debugging and diagnostic information.
Imports System Imports System.Diagnostics Class StackTraceSample <STAThread()> _ Public Shared Sub Main() Dim sample As New StackTraceSample() Try sample.MyPublicMethod() Catch ' Create a StackTrace that captures ' filename, line number, and column ' information for the current thread. Dim st As New StackTrace(True) Dim i As Integer For i = 0 To st.FrameCount - 1 ' Note that high up the call stack, there is only ' one stack frame. Dim sf As StackFrame = st.GetFrame(i) Console.WriteLine() Console.WriteLine("High up the call stack, Method: {0}", _ sf.GetMethod()) Console.WriteLine("High up the call stack, Line Number: {0}", _ sf.GetFileLineNumber()) Next i End Try End Sub Public Sub MyPublicMethod() MyProtectedMethod() End Sub Protected Sub MyProtectedMethod() Dim mic As New MyInternalClass() mic.ThrowsException() End Sub Class MyInternalClass Public Sub ThrowsException() Try Throw New Exception("A problem was encountered.") Catch e As Exception ' Create a StackTrace that captures filename, ' line number and column information. Dim st As New StackTrace(True) Dim stackIndent As String = "" Dim i As Integer For i = 0 To st.FrameCount - 1 ' Note that at this level, there are four ' stack frames, one for each method invocation. Dim sf As StackFrame = st.GetFrame(i) Console.WriteLine() Console.WriteLine(stackIndent + " Method: {0}", _ sf.GetMethod()) Console.WriteLine(stackIndent + " File: {0}", _ sf.GetFileName()) Console.WriteLine(stackIndent + " Line Number: {0}", _ sf.GetFileLineNumber()) stackIndent += " " Next i Throw e End Try End Sub End Class End Class ' This console application produces the following output when ' compiled with the Debug configuration. ' ' Method: Void ThrowsException() ' File: c:\pp\samples\stacktraceframe\myclass.vb ' Line Number: 55 ' ' Method: Void MyProtectedMethod() ' File: c:\pp\samples\stacktraceframe\myclass.vb ' Line Number: 42 ' ' Method: Void MyPublicMethod() ' File: c:\pp\samples\stacktraceframe\myclass.vb ' Line Number: 37 ' ' Method: Void Main(System.String[]) ' File: c:\pp\samples\stacktraceframe\myclass.vb ' Line Number: 13 ' ' High up the call stack, Method: Void Main(System.String[]) ' High up the call stack, Line Number: 18 ' ' ' This console application produces the following output when ' compiled with the Release configuration. ' ' Method: Void ThrowsException() ' File: ' Line Number: 0 ' ' Method: Void Main(System.String[]) ' File: ' Line Number: 0 ' ' High up the call stack, Method: Void Main() ' High up the call stack, Line Number: 0 '
import System.*;
import System.Diagnostics.*;
class StackTraceSample
{
/** @attribute STAThread()
*/
public static void main(String[] args)
{
StackTraceSample sample = new StackTraceSample();
try {
sample.MyPublicMethod();
}
catch (System.Exception exp) {
// Create a StackTrace that captures
// filename, line number, and column
// information for the current thread.
StackTrace st = new StackTrace(true);
for (int i = 0; i < st.get_FrameCount(); i++) {
// Note that high up the call stack, there is only
// one stack frame.
StackFrame sf = st.GetFrame(i);
Console.WriteLine();
Console.WriteLine("High up the call stack, Method: {0}",
sf.GetMethod());
Console.WriteLine("High up the call stack, Line Number: {0}",
(Int32)sf.GetFileLineNumber());
}
}
} //main
public void MyPublicMethod() throws System.Exception
{
MyProtectedMethod();
} //MyPublicMethod
protected void MyProtectedMethod() throws System.Exception
{
MyInternalClass mic = new MyInternalClass();
mic.ThrowsException();
} //MyProtectedMethod
class MyInternalClass
{
public void ThrowsException() throws System.Exception
{
try {
throw new System.Exception("A problem was encountered.");
}
catch (System.Exception e) {
// Create a StackTrace that captures filename,
// line number and column information.
StackTrace st = new StackTrace(true);
String stackIndent = "";
for (int i = 0; i < st.get_FrameCount(); i++) {
// Note that at this level, there are four
// stack frames, one for each method invocation.
StackFrame sf = st.GetFrame(i);
Console.WriteLine();
Console.WriteLine(stackIndent + " Method: {0}",
sf.GetMethod());
Console.WriteLine(stackIndent + " File: {0}",
sf.GetFileName());
Console.WriteLine(stackIndent + " Line Number: {0}",
(Int32)sf.GetFileLineNumber());
stackIndent += " ";
}
throw e;
}
} //ThrowsException
} //MyInternalClass
} //StackTraceSample
/*
This console application produces the following output when
compiled with the Debug configuration.
Method: Void ThrowsException()
File: c:\samples\stacktraceframe\myclass.jsl
Line Number: 57
Method: Void MyProtectedMethod()
File: c:\samples\stacktraceframe\myclass.jsl
Line Number: 43
Method: Void MyPublicMethod()
File: c:\samples\stacktraceframe\myclass.jsl
Line Number: 37
Method: Void main(System.String[])
File: c:\samples\stacktraceframe\myclass.jsl
Line Number: 14
High up the call stack, Method: Void main(System.String[])
High up the call stack, Line Number: 21
This console application produces the following output when
compiled with the Release configuration.
Method: Void ThrowsException()
File:
Line Number: 0
Method: Void MyProtectedMethod()
File:
Line Number: 0
Method: Void MyPublicMethod()
File:
Line Number: 0
Method: Void main(System.String[])
File:
Line Number: 0
High up the call stack, Method: Void main(System.String[])
High up the call stack, Line Number: 0
*/
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.