ToUpper Method (CultureInfo)
Collapse the table of content
Expand the table of content

String.ToUpper Method (CultureInfo)

 

Returns a copy of this string converted to uppercase, using the casing rules of the specified culture.

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

member ToUpper : 
        culture:CultureInfo -> string

Parameters

culture
Type: System.Globalization.CultureInfo

An object that supplies culture-specific casing rules.

Return Value

Type: System.String

The uppercase equivalent of the current string.

Exception Condition
ArgumentNullException

culture is null.

The casing rules of the culture specified by the culture parameter determine the way the case of a string is changed.

System_CAPS_noteNote

This method does not modify the value of the current instance. Instead, it returns a new string in which all characters in the current instance are converted to uppercase.

If you pass the ToUpper(CultureInfo) method a CultureInfo object other than CultureInfo.InvariantCulture, the casing operation will take culture-specific rules into account. If you need the lowercase or uppercase version of an operating system identifier, such as a file name, named pipe, or registry key, use the ToLowerInvariant or ToUpperInvariant method. This produces the same result in every culture and performs more efficiently.

The following example converts a string of lowercase characters to two strings of uppercase characters using the English-United States and Turkish-Turkey cultures, then compares the uppercase strings. The uppercase strings are identical except that for each occurrence of the Unicode LATIN CAPITAL LETTER I in one string, the other string contains LATIN CAPITAL LETTER I WITH DOT ABOVE.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Return to top
Show:
© 2016 Microsoft