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11/18/2011

Char.IsSeparator Method (Char)

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

Indicates whether the specified Unicode character is categorized as a separator character.

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

Syntax

'Declaration
Public Shared Function IsSeparator ( _
    c As Char _
) As Boolean

public static bool IsSeparator(
    char c
)

Parameters

c
Type: System.Char
A Unicode character.

Return Value

Type: System.Boolean
true if c is a separator character; otherwise, false.

Remarks

The Unicode standard recognizes three subcategories of separators:

Space separators (the UnicodeCategory.SpaceSeparator category), which includes characters such as \u0020.
Line separators (the UnicodeCategory.LineSeparator category), which includes \u2028.
Paragraph separators (the UnicodeCategory.ParagraphSeparator category), which includes \u2029.

Note:
The Unicode standard classifies the characters \u000A (LF), \u000C (FF), and \u000A (CR) as control characters (members of the UnicodeCategory.Control category), not as separator characters.

Examples

The following example lists the Char objects that are classified as separator characters.

Module Example
   Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      For ctr As Integer = Convert.ToInt32(Char.MinValue) To Convert.ToInt32(Char.MaxValue)
         Dim ch As Char = ChrW(ctr)
         If Char.IsSeparator(ch) Then
            outputBlock.Text += String.Format("\u{0:X4} ({1})", AscW(ch), Char.GetUnicodeCategory(ch).ToString()) & vbCrLf
         End If
      Next
   End Sub
End Module
' The example displays the following output:
'       \u0020 (SpaceSeparator)
'       \u00A0 (SpaceSeparator)
'       \u1680 (SpaceSeparator)
'       \u180E (SpaceSeparator)
'       \u2000 (SpaceSeparator)
'       \u2001 (SpaceSeparator)
'       \u2002 (SpaceSeparator)
'       \u2003 (SpaceSeparator)
'       \u2004 (SpaceSeparator)
'       \u2005 (SpaceSeparator)
'       \u2006 (SpaceSeparator)
'       \u2007 (SpaceSeparator)
'       \u2008 (SpaceSeparator)
'       \u2009 (SpaceSeparator)
'       \u200A (SpaceSeparator)
'       \u2028 (LineSeparator)
'       \u2029 (ParagraphSeparator)
'       \u202F (SpaceSeparator)
'       \u205F (SpaceSeparator)
'       \u3000 (SpaceSeparator)

using System;

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      for (int ctr = Convert.ToInt32(Char.MinValue); ctr <= Convert.ToInt32(Char.MaxValue); ctr++)
      {
         char ch = (Char)ctr;
         if (Char.IsSeparator(ch))
            outputBlock.Text += String.Format(@"\u{0:X4} ({1})", (int)ch, Char.GetUnicodeCategory(ch).ToString()) + "\n";
      }
   }
}
// The example displays the following output:
//       \u0020 (SpaceSeparator)
//       \u00A0 (SpaceSeparator)
//       \u1680 (SpaceSeparator)
//       \u180E (SpaceSeparator)
//       \u2000 (SpaceSeparator)
//       \u2001 (SpaceSeparator)
//       \u2002 (SpaceSeparator)
//       \u2003 (SpaceSeparator)
//       \u2004 (SpaceSeparator)
//       \u2005 (SpaceSeparator)
//       \u2006 (SpaceSeparator)
//       \u2007 (SpaceSeparator)
//       \u2008 (SpaceSeparator)
//       \u2009 (SpaceSeparator)
//       \u200A (SpaceSeparator)
//       \u2028 (LineSeparator)
//       \u2029 (ParagraphSeparator)
//       \u202F (SpaceSeparator)
//       \u205F (SpaceSeparator)
//       \u3000 (SpaceSeparator)

Version Information

Silverlight

Supported in: 5, 4, 3

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.

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