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StringWriter Constructor (StringBuilder)

Initializes a new instance of the StringWriter class that writes to the specified StringBuilder.

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

public StringWriter (
	StringBuilder sb
)
public StringWriter (
	StringBuilder sb
)
public function StringWriter (
	sb : StringBuilder
)

Parameters

sb

The StringBuilder to write to.

Exception typeCondition

ArgumentNullException

sb is a null reference (Nothing in Visual Basic).

The following table lists examples of other typical or related I/O tasks.

To do this...

See the example in this topic...

Create a text file.

How to: Write Text to a File

Write to a text file.

How to: Write Text to a File

Read from a text file.

How to: Read Text from a File

Append text to a file.

How to: Open and Append to a Log File

File.AppendText

FileInfo.AppendText

Get the size of a file.

FileInfo.Length

Get the attributes of a file.

File.GetAttributes

Set the attributes of a file.

File.SetAttributes

Determine if a file exists.

File.Exists

Read from a binary file.

How to: Read and Write to a Newly Created Data File

Write to a binary file.

How to: Read and Write to a Newly Created Data File

The following code example demonstrates using the StringBuilder class to modify the underlying string in a closed StringWriter.

using System;
using System.IO;
using System.Text;

class StrWriter
{
    static void Main()
    {
        StringBuilder strBuilder = 
            new StringBuilder("file path characters are: ");
        StringWriter strWriter = new StringWriter(strBuilder);

        strWriter.Write(
            Path.InvalidPathChars, 0, Path.InvalidPathChars.Length);

        strWriter.Close();

        // Since the StringWriter is closed, an exception will 
        // be thrown if the Write method is called. However, 
        // the StringBuilder can still manipulate the string.
        strBuilder.Insert(0, "Invalid ");
        Console.WriteLine(strWriter.ToString());
    }
}

import System.*;
import System.IO.*;
import System.Text.*;

class StrWriter
{
    public static void main(String[] args)
    {
        StringBuilder strBuilder =
            new StringBuilder("file path characters are: ");
        StringWriter strWriter = new StringWriter(strBuilder);
        strWriter.Write(Path.InvalidPathChars, 0,
            Path.InvalidPathChars.length );

        strWriter.Close();

        // Since the StringWriter is closed, an exception will 
        // be thrown if the Write method is called. However, 
        // the StringBuilder can still manipulate the string.
        strBuilder.Insert(0, "Invalid ");
        Console.WriteLine(strWriter.ToString());
    } //main 
} //StrWriter

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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