Console.OpenStandardOutput Method (Int32)

Acquires the standard output stream, which is set to a specified buffer size.

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

[HostProtectionAttribute(SecurityAction.LinkDemand, UI = true)]
public static Stream OpenStandardOutput(
	int bufferSize
)

Parameters

bufferSize
Type: System.Int32
The internal stream buffer size.

Return Value

Type: System.IO.Stream
The standard output stream.

ExceptionCondition
ArgumentOutOfRangeException

bufferSize is less than or equal to zero.

This method can be used to reacquire the standard output stream after it has been changed by the SetOut method.

NoteNote

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: UI. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The following example illustrates the use of the OpenStandardOutput method.


using System;
using System.IO;

public class InsertTabs {
    private const int tabSize = 4;
    private const string usageText = "Usage: INSERTTABS inputfile.txt outputfile.txt";
    public static int Main(string[] args) {
        StreamWriter writer = null;

        if (args.Length < 2) {
            Console.WriteLine(usageText);
            return 1;
        }

        try {
            // Attempt to open output file.
            writer = new StreamWriter(args[1]);
            // Redirect standard output from the console to the output file.
            Console.SetOut(writer);
            // Redirect standard input from the console to the input file.
            Console.SetIn(new StreamReader(args[0]));
        }
        catch(IOException e) {
            TextWriter errorWriter = Console.Error;
            errorWriter.WriteLine(e.Message);
            errorWriter.WriteLine(usageText);
            return 1;            
        }
        string line;
        while ((line = Console.ReadLine()) != null) {
            string newLine = line.Replace(("").PadRight(tabSize, ' '), "\t");
            Console.WriteLine(newLine);
        }
        writer.Close();
        // Recover the standard output stream so that a 
        // completion message can be displayed.
        StreamWriter standardOutput = new StreamWriter(Console.OpenStandardOutput());
        standardOutput.AutoFlush = true;
        Console.SetOut(standardOutput);
        Console.WriteLine("INSERTTABS has completed the processing of {0}.", args[0]);
        return 0;
    }
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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