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TextInfo.ToTitleCase Method

Converts the specified string to titlecase.

Namespace:  System.Globalization
Assembly:  mscorlib (in mscorlib.dll)
public string ToTitleCase(
	string str
)

Parameters

str
Type: System.String

The string to convert to titlecase.

Return Value

Type: System.String
The specified string converted to titlecase.
ExceptionCondition
ArgumentNullException

str is null.

Generally, title casing converts the first character of a word to uppercase and the rest of the characters to lowercase. However, this method does not currently provide proper casing to convert a word that is entirely uppercase, such as an acronym. The following table shows the way the method renders several strings.

Input

Language

Expected result

Actual result

war and peace

English

War and Peace

War And Peace

Per anhalter durch die Galaxis

German

Per Anhalter durch die Galaxis

Per Anhalter Durch Die Galaxis

les naufragés d'ythaq

French

Les Naufragés d'Ythaq

Les Naufragés D'ythaq

The current implementation of the ToTitleCase method yields an output string that is the same length as the input string. However, this behavior is not guaranteed and could change in a future implementation.

The following code example changes the casing of a string based on the English (United States) culture, with the culture name en-US.

using System;
using System.Globalization;


public class SamplesTextInfo  {

   public static void Main()  {

      // Defines the string with mixed casing.
      string myString = "wAr aNd pEaCe";

      // Creates a TextInfo based on the "en-US" culture.
      TextInfo myTI = new CultureInfo("en-US",false).TextInfo;

      // Changes a string to lowercase.
      Console.WriteLine( "\"{0}\" to lowercase: {1}", myString, myTI.ToLower( myString ) );

      // Changes a string to uppercase.
      Console.WriteLine( "\"{0}\" to uppercase: {1}", myString, myTI.ToUpper( myString ) );

      // Changes a string to titlecase.
      Console.WriteLine( "\"{0}\" to titlecase: {1}", myString, myTI.ToTitleCase( myString ) );

   }

}

/*
This code produces the following output.

"wAr aNd pEaCe" to lowercase: war and peace
"wAr aNd pEaCe" to uppercase: WAR AND PEACE
"wAr aNd pEaCe" to titlecase: War And Peace

*/

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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