• Article

Char.ToUpperInvariant Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Converts the value of a Unicode character to its uppercase equivalent using the casing rules of the invariant culture.

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

Syntax

'Declaration
Public Shared Function ToUpperInvariant ( _
    c As Char _
) As Char

public static char ToUpperInvariant(
    char c
)

Parameters

  • c
    Type: System.Char
    The Unicode character to convert.

Return Value

Type: System.Char
The uppercase equivalent of the c parameter, or the unchanged value of c, if c is already uppercase or not alphabetic.

Remarks

If your application is unaffected by the current culture and depends on the case of a character changing in a predictable way, use the ToUpperInvariant method. The ToUpperInvariant method is equivalent to ToUpper(Char, CultureInfo.InvariantCulture).

Use String.ToUpperInvariant to convert a string to uppercase.

Platform Notes

Silverlight for Windows Phone Silverlight for Windows Phone

This member is present to support the .NET Compact Framework infrastructure in Silverlight for Windows Phone, and it is not intended to be used in your application code.

Version Information

Silverlight

Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.