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StringBuilderAppendFormat Method (String, Object)
Appends the string returned by processing a composite format string, which contains zero or more format items, to this instance. Each format item is replaced by the string representation of a single argument.

Namespace: System.Text
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0
Syntax
C#
Copy
public StringBuilder AppendFormat(
	string format,
	Object arg0
)

Parameters

format
Type: SystemString
A composite format string (see Remarks).
arg0
Type: SystemObject
An object to format.

Return Value

Type: StringBuilder
A reference to this instance with format appended. Each format item in format is replaced by the string representation of arg0.
Exceptions
ExceptionCondition
ArgumentNullExceptionformat is null.
FormatExceptionformat is invalid. -or-The index of a format item is less than 0 (zero), or greater than or equal to 1.
ArgumentOutOfRangeExceptionThe length of the expanded string would exceed MaxCapacity.
See Also