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Console::SetError Method (TextWriter^)

.NET Framework (current version)
 

Sets the Error property to the specified TextWriter object.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

C#
C++
F#
VB
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public:
[HostProtectionAttribute(SecurityAction::LinkDemand, UI = true)]
static void SetError(
	TextWriter^ newError
)

Parameters

newError
Type: System.IO::TextWriter^

A stream that is the new standard error output.

Exception Condition
ArgumentNullException

newError is null.

SecurityException

The caller does not have the required permission.

By default, the Error property is set to the standard error output stream.

A StreamWriter that encapsulates a FileStream can be used to send error messages to a file.

The following example shows how to redirect the standard error stream to a file.

C#
C++
VB
Copy 
using namespace System;
using namespace System::IO;
using namespace System::Reflection;

ref class RedirectStdErr;

void main()
{
   // Define file to receive error stream.
   DateTime appStart = DateTime::Now;
   String^ fn = "c:\\temp\\errlog" + appStart.ToString("yyyyMMddHHmm") + ".log";
   TextWriter^ errStream = gcnew StreamWriter(fn);
   String^ appName = Assembly::GetExecutingAssembly()->Location;
   appName = appName->Substring(appName->LastIndexOf('\\') + 1);
   // Redirect standard error stream to file.
   Console::SetError(errStream);
   // Write file header.
   Console::Error->WriteLine("Error Log for Application {0}", appName);
   Console::Error->WriteLine();
   Console::Error->WriteLine("Application started at {0}.", appStart);
   Console::Error->WriteLine();
   //
   // Application code along with error output 
   //
   // Close redirected error stream.
   Console::Error->Close();
}

SecurityPermission

for calling unmanaged code. Associated enumeration: SecurityPermissionFlag::UnmanagedCode

.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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