AppendLine Method
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StringBuilder.AppendLine Method ()


Appends the default line terminator to the end of the current StringBuilder object.

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

public StringBuilder AppendLine()

Return Value

Type: System.Text.StringBuilder

A reference to this instance after the append operation has completed.

Exception Condition

Enlarging the value of this instance would exceed MaxCapacity.

The default line terminator is the current value of the Environment.NewLine property.

The capacity of this instance is adjusted as needed.

Notes to Callers:

In the.NET Framework 4 and the .NET Framework 4.5, when you instantiate the StringBuilder object by calling the StringBuilder(Int32, Int32) constructor, both the length and the capacity of the StringBuilder instance can grow beyond the value of its MaxCapacity property. This can occur particularly when you call the Append and AppendFormat methods to append small strings.

The following example demonstrates the AppendLine method.

// This example demonstrates the StringBuilder.AppendLine() 
// method.

using System;
using System.Text;

class Sample 
    public static void Main() 
    StringBuilder sb = new StringBuilder();
    string        line = "A line of text.";
    int           number = 123;

// Append two lines of text.
    sb.AppendLine("The first line of text.");

// Append a new line, an empty string, and a null cast as a string.

// Append the non-string value, 123, and two new lines.

// Append two lines of text.
    sb.AppendLine("The last line of text.");

// Convert the value of the StringBuilder to a string and display the string.
This example produces the following results:

The first line of text.
A line of text.


A line of text.
The last line of text.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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