System Namespace Exception Class
Creates and returns a string representation of the current exception.
[ VB ]
<Serializable>
<ClassInterface ( ClassInterfaceType.AutoDual ) >
Overrides Public Function ToString ( ) As String
[ C# ]
[ Serializable ]
[ ClassInterface ( ClassInterfaceType.AutoDual ) ]
public override string ToString ( );
[ C++ ]
[ Serializable ]
[ ClassInterface ( ClassInterfaceType.AutoDual ) ]
public: String* ToString ( );
[ JScript ]
public Serializable
ClassInterface ( ClassInterfaceType.AutoDual )
override function ToString ( ) : String;
A string representation of the current exception.
ToString returns a representation of the current exception that is intended to be understood by humans. Where the exception contains culture-sensitive data, the string representation returned by ToString is required to take into account the current system culture. Although there are no exact requirements for the format of the returned string, it should attempt to reflect the value of the object as perceived by the user.
The default implementation of Exception.ToString obtains the name of the class that threw the current exception, the message, the result of calling ToString on the inner exception, and the result of calling Environment.StackTrace. If any of these members is a null reference ( Nothing in Visual Basic ), its value is not included in the returned string.
If there is no error message or if it is an empty string ( "" ), then no error message is returned. The name of the inner exception and the stack trace are returned only if they are not a null reference.
This method overrides Object.ToString.
Notes to Inheritors: It is recommended, but not required, that ToString be overridden to return information about members declared in the derived class. For example, the ArgumentException class implements ToString so that it returns the value of the ParamName property, if that value is not a null reference.
[ VB, C#, JScript ] The following example causes an exception and displays the result of calling ToString on that exception.
[ VB ]
Imports System
Public Class [ MyClass ]
End Class ' [ MyClass ]
Public Class ArgExceptionExample
Public Shared Sub Main ( )
Dim my As New [ MyClass ] ( )
Dim s As String = "sometext"
Try
Dim i As Integer = s.CompareTo ( my )
Catch e As Exception
Response.Write ( "Error: {0}", e.ToString ( ) )
End Try
End Sub 'Main
End Class 'ArgExceptionExample
[ C# ]
using System;
public class MyClass {}
public class ArgExceptionExample
{
public static void Main ( )
{
MyClass my = new MyClass ( );
string s = "sometext";
try
{
int i = s.CompareTo ( my );
}
catch ( Exception e )
{
Response.Write ( "Error: {0}",e.ToString ( ) );
}
}
}
[ JScript ]
import System;
public class MyClass {}
public class ArgExceptionExample
{
public static function Main ( )
{
var my : MyClass = new MyClass ( );
var s : String = "sometext";
try
{
var i : int = s.CompareTo ( my );
}
catch ( e : Exception )
{
Response.Write ( "Error: {0}",e.ToString ( ) );
}
}
}
[ VB, C#, JScript ] This code has the following output:
[ VB, C#, JScript ] Error:
System.ArgumentException: Object must be of type String. at
System.String.CompareTo ( Object value ) at ArgExceptionExample.Main ( )
Exception Members
