Char.IsLetterOrDigit 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 Unicode character is categorized as a letter or a decimal digit.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- c
- Type: System.Char
The Unicode character to evaluate.
Valid alphabetic letters and decimal digits are members of the following categories in UnicodeCategory: UppercaseLetter, LowercaseLetter, TitlecaseLetter, ModifierLetter, OtherLetter, or DecimalDigitNumber.
The following example demonstrates IsLetterOrDigit.
Module Example Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock) Dim str As String str = "newline:" + vbNewLine outputBlock.Text &= Char.IsLetterOrDigit("8"c) & vbCrLf ' Output: "True" outputBlock.Text += String.Format(Char.IsLetterOrDigit(str, 8)) & vbCrLf ' Output: "False", because it's a NewLine End Sub End Module
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