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DateTimeFormatInfo.FirstDayOfWeek Property

Gets or sets the first day of the week.

Namespace:  System.Globalization
Assemblies:   System.Globalization (in System.Globalization.dll)
  mscorlib (in mscorlib.dll)

public DayOfWeek FirstDayOfWeek { get; set; }

Property Value

Type: System.DayOfWeek
An enumeration value that represents the first day of the week. The default for InvariantInfo is DayOfWeek.Sunday.

ExceptionCondition
ArgumentOutOfRangeException

The property is being set to a value that is not a valid System.DayOfWeek value.

InvalidOperationException

The property is being set and the DateTimeFormatInfo object is read-only.

This property is affected if the value of the Calendar property changes.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

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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