StringBuilder.Append Method (Object)
Appends the string representation of a specified object to this instance.
Assembly: mscorlib (in mscorlib.dll)
The method modifies the existing instance of this class; it does not return a new class instance. Because of this, you can call a method or property on the existing reference and you do not have to assign the return value to a StringBuilder object, as the following example illustrates. It defines a Dog class, creates a Dog object, and makes three calls to the Append method to create a string that contains the dog's name and breed.
Public Class Dog Private dogBreed As String Private dogName As String Public Sub New(name As String, breed As String) Me.dogName = name Me.dogBreed = breed End Sub Public ReadOnly Property Breed As String Get Return Me.dogBreed End Get End Property Public ReadOnly Property Name As String Get Return Me.dogName End Get End Property Public Overrides Function ToString() As String Return Me.dogName End Function End Class Module Example Public Sub Main() Dim dog1 As New Dog("Yiska", "Alaskan Malamute") Dim sb As New System.Text.StringBuilder() sb.Append(dog1).Append(", Breed: ").Append(dog1.Breed) Console.WriteLine(sb) End Sub End Module ' The example displays the following output: ' Yiska, Breed: Alaskan Malamute
The capacity of this instance is adjusted as needed.Notes to Callers
In the .NET Framework 4, when you instantiate the StringBuilder object by calling the StringBuilder 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.
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.