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DateTimeFormatInfo.DayNames Property

Gets or sets a one-dimensional string array that contains the culture-specific full names of the days of the week.

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

public string[] DayNames { get; set; }

Property Value

Type: System.String[]
A one-dimensional string array that contains the culture-specific full names of the days of the week. The array for InvariantInfo contains "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", and "Saturday".

ExceptionCondition
ArgumentNullException

The property is being set to null.

ArgumentException

The property is being set to an array that is multidimensional or that has a length that is not exactly 7.

InvalidOperationException

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

If setting this property, the array must be one-dimensional and must have exactly seven elements. The first element (the element at index zero) represents the first day of the week in the calendar defined by the Calendar property.

If a custom format string includes the "dddd" format specifier, the DateTime.ToString method includes the value of the appropriate DayNames member in place of "dddd" in the result string.

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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