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StringBuilder.Append Method (String)

April 12, 2014

Appends a copy of the specified string to the end of this instance.

Namespace:  System.Text
Assembly:  mscorlib (in mscorlib.dll)
public StringBuilder Append(
	string value
)

Parameters

value
Type: System.String
The String to append.

Return Value

Type: System.Text.StringBuilder
A reference to this instance after the append operation has completed.
ExceptionCondition
ArgumentOutOfRangeException

Enlarging the value of this instance would exceed its maximum capacity.

The Append 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.


bool flag = false;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append("The value of the flag is ").Append(flag).Append(".");
outputBlock.Text += sb.ToString() + Environment.NewLine;
// The example displays the following output:
//       The value of the flag is False.


If value is null, no changes are made.

The capacity of this instance is adjusted as needed.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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