IsUpper Method (String, Int32)
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Char.IsUpper Method (String, Int32)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Indicates whether the character at the specified position in a specified string is categorized as an uppercase letter.

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

public static bool IsUpper(
	string s,
	int index
)

Parameters

s
Type: System.String
A string.
index
Type: System.Int32
The character position in s.

Return Value

Type: System.Boolean
true if the character at position index in s is an uppercase letter; otherwise, false.

ExceptionCondition
ArgumentNullException

s is null.

ArgumentOutOfRangeException

index is less than zero or greater than the last position in s.

Character positions in a string are indexed starting from zero.

Valid uppercase letters are members of the following category in UnicodeCategory: UppercaseLetter.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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