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String.Format Method (String, Object, Object)

Replaces the format items in a specified string with the string representation of two specified objects.

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

static member Format : 
        format:string * 
        arg0:Object * 
        arg1:Object -> string

Parameters

format
Type: System.String

A composite format string.

arg0
Type: System.Object

The first object to format.

arg1
Type: System.Object

The second object to format.

Return Value

Type: System.String
A copy of format in which format items are replaced by the string representations of arg0 and arg1.

ExceptionCondition
ArgumentNullException

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

FormatException

format is invalid.

-or-

The index of a format item is not zero or one.

NoteNote

For examples and comprehensive usage information about this and other overloads of the Format method, see the Format overload summary.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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