Char.IsSeparator 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 a separator character.
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Shared Function IsSeparator ( _ s As String, _ index As Integer _ ) As Boolean
Return Value
Type: System.Booleantrue if the character at position index in s is a separator character; otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentNullException | s is Nothing. |
| ArgumentOutOfRangeException | index is less than zero or greater than the last position in s. |
Character positions in a string are indexed starting from zero.
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. |
The following example demonstrates IsSeparator.
Module Example Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock) Dim str As String str = "twain1 twain2" outputBlock.Text &= Char.IsSeparator("a"c) & vbCrLf ' Output: "False" outputBlock.Text += String.Format(Char.IsSeparator(str, 6)) & vbCrLf ' Output: "True" End Sub End Module
Note: