Char.IsSurrogate Method (Char)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Indicates whether the specified character has a surrogate code unit.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- c
- Type: System.Char
A Unicode character.
Return Value
Type: System.Booleantrue if c is either a high surrogate or a low surrogate; otherwise, false.
A surrogate is a Char object with a Unicode code unit in the range from U+D800 to U+DFFF. Each character with a code unit in this range belongs to the UnicodeCategory.Surrogate category. The individual surrogate code unit has no interpretation of its own, but has meaning only when used as part of a surrogate pair. For more information about surrogate pairs, see the Unicode Standard at the Unicode home page.
The following example demonstrates IsSurrogate.
Module Example Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock) ' NOTE: Visual Basic doesn't give us a way to create a 32-bit Unicode ' character composed of two 16-bit surrogate values, so a case where ' IsSurrogate returns True cannot be included in this sample. outputBlock.Text &= Char.IsSurrogate("a"c) & vbCrLf ' Output: "False" End Sub End Module