CharUnicodeInfo::GetDecimalDigitValue Method (String, Int32)
Gets the decimal digit value of the numeric character at the specified index of the specified string.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- s
- Type: System::String
The String containing the Unicode character for which to get the decimal digit value.
- index
- Type: System::Int32
The index of the Unicode character for which to get the decimal digit value.
Return Value
Type: System::Int32The decimal digit value of the numeric character at the specified index of the specified string.
-or-
-1, if the character at the specified index of the specified string is not a decimal digit.
| Exception | Condition |
|---|---|
| ArgumentNullException | s is nullptr. |
| ArgumentOutOfRangeException | index is outside the range of valid indexes in s. |
Decimal digit value is a property that applies only to decimal digits. A decimal digit is a digit in the decimal (base-10) system that can be one of ten digits, from zero through nine.
For more information on Unicode characters, see the Unicode Standard.
The following code example shows the values returned by each method for different types of characters.
using namespace System; using namespace System::Globalization; int main() { // The String to get information for. String^ s = "a9\u0393\u00B2\u00BC\u0BEF\u0BF0\u2788"; Console::WriteLine( "String: {0}", s ); // Print the values for each of the characters in the string. Console::WriteLine( "index c Num Dig Dec UnicodeCategory" ); for ( int i = 0; i < s->Length; i++ ) { Console::Write( "{0,-5} {1,-3}", i, s[ i ] ); Console::Write( " {0,-5}", CharUnicodeInfo::GetNumericValue( s, i ) ); Console::Write( " {0,-5}", CharUnicodeInfo::GetDigitValue( s, i ) ); Console::Write( " {0,-5}", CharUnicodeInfo::GetDecimalDigitValue( s, i ) ); Console::WriteLine( "{0}", CharUnicodeInfo::GetUnicodeCategory( s, i ) ); } } /* This code produces the following output. Some characters might not display at the console. String: a9\u0393\u00B2\u00BC\u0BEF\u0BF0\u2788 index c Num Dig Dec UnicodeCategory 0 a -1 -1 -1 LowercaseLetter 1 9 9 9 9 DecimalDigitNumber 2 \u0393 -1 -1 -1 UppercaseLetter 3 \u00B2 2 2 2 OtherNumber 4 \u00BC 0.25 -1 -1 OtherNumber 5 \u0BEF 9 9 9 DecimalDigitNumber 6 \u0BF0 10 -1 -1 OtherNumber 7 \u2788 9 9 -1 OtherNumber */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.