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StringComparer::Create Method
Visual Studio 2010
Creates a StringComparer object that compares strings according to the rules of a specified culture.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- culture
- Type: System.Globalization::CultureInfo
A culture whose linguistic rules are used to perform a string comparison.
- ignoreCase
- Type: System::Boolean
true to specify that comparison operations be case-insensitive; false to specify that comparison operations be case-sensitive.
Return Value
Type: System::StringComparerA new StringComparer object that performs string comparisons according to the comparison rules used by the culture parameter and the case rule specified by the ignoreCase parameter.
| Exception | Condition |
|---|---|
| ArgumentNullException | culture is nullptr. |
The following code example demonstrates the properties and the Create method of the StringComparer class. The example illustrates how different StringComparer objects sort three versions of the Latin letter I.
// This example demonstrates members of the // System::StringComparer class. using namespace System; using namespace System::Collections; using namespace System::Collections::Generic; using namespace System::Globalization; using namespace System::Threading; void Display(List<String^>^ stringList, String^ title) { Char firstChar; int codePoint; Console::WriteLine(title); for each (String^ s in stringList) { firstChar = s[0]; codePoint = Convert::ToInt32(firstChar); Console::WriteLine("0x{0:x}", codePoint); } Console::WriteLine(); } int main() { // Create a list of string. List<String^>^ stringList = gcnew List<String^>(); // Get the tr-TR (Turkish-Turkey) culture. CultureInfo^ turkishCulture = gcnew CultureInfo("tr-TR"); // Get the culture that is associated with the current thread. CultureInfo^ currentCulture = Thread::CurrentThread->CurrentCulture; // Get the standard StringComparers. StringComparer^ invariant = StringComparer::InvariantCulture; StringComparer^ invariantIgnoreCase = StringComparer::InvariantCultureIgnoreCase; StringComparer^ current = StringComparer::CurrentCulture; StringComparer^ currentIgnoreCase = StringComparer::CurrentCultureIgnoreCase; StringComparer^ ordinal = StringComparer::Ordinal; StringComparer^ ordinalIgnoreCase = StringComparer::OrdinalIgnoreCase; // Create a StringComparer that uses the Turkish culture and ignores // case. StringComparer^ turkishIgnoreCase = StringComparer::Create(turkishCulture, true); // Define three strings consisting of different versions of the // letter I. LATIN CAPITAL LETTER I (U+0049) String^ capitalLetterI = "I"; // LATIN SMALL LETTER I (U+0069) String^ smallLetterI = "i"; // LATIN SMALL LETTER DOTLESS I (U+0131) String^ smallLetterDotlessI = L"\u0131"; // Add the three strings to the list. stringList->Add(capitalLetterI); stringList->Add(smallLetterI); stringList->Add(smallLetterDotlessI); // Display the original list order. Display(stringList, "The original order of the list entries..."); // Sort the list using the invariant culture. stringList->Sort(invariant); Display(stringList, "Invariant culture..."); stringList->Sort(invariantIgnoreCase); Display(stringList, "Invariant culture, ignore case..."); // Sort the list using the current culture. Console::WriteLine("The current culture is \"{0}\".", currentCulture->Name); stringList->Sort(current); Display(stringList, "Current culture..."); stringList->Sort(currentIgnoreCase); Display(stringList, "Current culture, ignore case..."); // Sort the list using the ordinal value of the character code points. stringList->Sort(ordinal); Display(stringList, "Ordinal..."); stringList->Sort(ordinalIgnoreCase); Display(stringList, "Ordinal, ignore case..."); // Sort the list using the Turkish culture, which treats LATIN SMALL // LETTER DOTLESS I differently than LATIN SMALL LETTER I. stringList->Sort(turkishIgnoreCase); Display(stringList, "Turkish culture, ignore case..."); } /* This code example produces the following results: The original order of the list entries... 0x49 0x69 0x131 Invariant culture... 0x69 0x49 0x131 Invariant culture, ignore case... 0x49 0x69 0x131 The current culture is "en-US". Current culture... 0x69 0x49 0x131 Current culture, ignore case... 0x49 0x69 0x131 Ordinal... 0x49 0x69 0x131 Ordinal, ignore case... 0x69 0x49 0x131 Turkish culture, ignore case... 0x131 0x49 0x69 */
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.
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