String.ToUpper メソッド ()
アセンブリ: mscorlib (mscorlib.dll 内)

Dim instance As String Dim returnValue As String returnValue = instance.ToUpper
大文字の String。


ToUpper メソッドを使用し、大文字と小文字を区別せずに String を比較するコード例を次に示します。
unsafe { // Null terminated ASCII characters in an sbyte array String szAsciiUpper = null; sbyte[] sbArr1 = new sbyte[] { 0x41, 0x42, 0x43, 0x00 }; // Instruct the Garbage Collector not to move the memory fixed(sbyte* pAsciiUpper = sbArr1) { szAsciiUpper = new String(pAsciiUpper); } String szAsciiLower = null; sbyte[] sbArr2 = { 0x61, 0x62, 0x63, 0x00 }; // Instruct the Garbage Collector not to move the memory fixed(sbyte* pAsciiLower = sbArr2) { szAsciiLower = new String(pAsciiLower, 0, sbArr2.Length); } // Prints "ABC abc" Console.WriteLine(szAsciiUpper + " " + szAsciiLower); // Compare Strings - the result is true Console.WriteLine("The Strings are equal when capitalized ? " + (String.Compare(szAsciiUpper.ToUpper(), szAsciiLower.ToUpper())==0?"true":"false") ); // This is the effective equivalent of another Compare method, which ignores case Console.WriteLine("The Strings are equal when capitalized ? " + (String.Compare(szAsciiUpper, szAsciiLower, true)==0?"true":"false") ); }
// Null terminated ASCII characters in a simple char array char charArray3[4] = {0x41,0x42,0x43,0x00}; char * pstr3 = &charArray3[ 0 ]; String^ szAsciiUpper = gcnew String( pstr3 ); char charArray4[4] = {0x61,0x62,0x63,0x00}; char * pstr4 = &charArray4[ 0 ]; String^ szAsciiLower = gcnew String( pstr4,0,sizeof(charArray4) ); // Prints "ABC abc" Console::WriteLine( String::Concat( szAsciiUpper, " ", szAsciiLower ) ); // Compare Strings - the result is true Console::WriteLine( String::Concat( "The Strings are equal when capitalized ? ", (0 == String::Compare( szAsciiUpper->ToUpper(), szAsciiLower->ToUpper() ) ? (String^)"TRUE" : "FALSE") ) ); // This is the effective equivalent of another Compare method, which ignores case Console::WriteLine( String::Concat( "The Strings are equal when capitalized ? ", (0 == String::Compare( szAsciiUpper, szAsciiLower, true ) ? (String^)"TRUE" : "FALSE") ) );

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


String.ToUpper メソッド (CultureInfo)
アセンブリ: mscorlib (mscorlib.dll 内)

Dim instance As String Dim culture As CultureInfo Dim returnValue As String returnValue = instance.ToUpper(culture)
戻り値
大文字の String。


現在有効なカルチャの大文字と小文字の規則によって、文字列の大文字と小文字を変更する方法が決まります。文字列の大文字と小文字が予測できる形で変更されることを前提としたアプリケーションでは、有効なカルチャが突然変更されると、無効な結果が得られる可能性があります。次の検索ルーチンを考えます。検索キーにはテキストの文字列を使用します。比較を簡単にするため、キーは強制的に標準的な大文字/小文字の形式とします。有効なカルチャは、現在のスレッドに対応するカルチャです。
現在のスレッドや対応するカルチャが突然変わる可能性がある場合は、既定での現在のスレッドのカルチャではなく、インバリアント カルチャを指定することをお勧めします。推奨する方法を次の例に示します。

次のコード例では、小文字だけで構成される文字列を、英語 - 米国カルチャとトルコ語-トルコ カルチャを使用して、大文字から成る 2 つの文字列に変換し、変換後の 2 つの文字列を比較しています。この 2 つの文字列は、一方が Unicode LATIN の大文字 I を使用しているのに対し、もう一方は LATIN の大文字 I (上にドットが付く) を使用している以外は同じです。
' Sample for String.ToUpper(CultureInfo) Imports System Imports System.Globalization Imports Microsoft.VisualBasic Class Sample Public Shared Sub Main() Dim str1 As [String] = "indigo" Dim str2, str3 As [String] Console.WriteLine() Console.WriteLine("str1 = '{0}'", str1) Console.WriteLine("str2 = Upper case copy of str1 using English-United States culture.") ' str2 is an upper case copy of str1, using English-United States culture. str2 = str1.ToUpper(New CultureInfo("en-US", False)) ' str3 is an upper case copy of str1, using Turkish-Turkey culture. Console.WriteLine("str3 = Upper case copy of str1 using Turkish-Turkey culture.") str3 = str1.ToUpper(New CultureInfo("tr-TR", False)) ' Compare the code points in str2 and str3. Console.WriteLine() Console.WriteLine("str2 is {0} to str3.", IIf(0 = [String].CompareOrdinal(str2, str3), "equal", "not equal")) CodePoints("str1", str1) CodePoints("str2", str2) CodePoints("str3", str3) End Sub 'Main Public Shared Sub CodePoints(title As [String], s As [String]) Console.Write("{0}The code points in {1} are: {0}", Environment.NewLine, title) Dim c As Char For Each c In s Console.Write("{0:x4} ", AscW(c)) Next c Console.WriteLine() End Sub 'CodePoints End Class 'Sample ' 'This example produces the following results: ' 'str1 = 'indigo' 'str2 = Upper case copy of str1 using English-United States culture. 'str3 = Upper case copy of str1 using Turkish-Turkey culture. ' 'str2 is not equal to str3. ' 'The code points in str1 are: '0069 006e 0064 0069 0067 006f ' 'The code points in str2 are: '0049 004e 0044 0049 0047 004f ' 'The code points in str3 are: '0130 004e 0044 0130 0047 004f '
// Sample for String.ToUpper(CultureInfo) using System; using System.Globalization; class Sample { public static void Main() { String str1 = "indigo"; String str2, str3; Console.WriteLine(); Console.WriteLine("str1 = '{0}'", str1); Console.WriteLine("str2 = Upper case copy of str1 using English-United States culture."); // str2 is an upper case copy of str1, using English-United States culture. str2 = str1.ToUpper(new CultureInfo("en-US", false)); // str3 is an upper case copy of str1, using Turkish-Turkey culture. Console.WriteLine("str3 = Upper case copy of str1 using Turkish-Turkey culture."); str3 = str1.ToUpper(new CultureInfo("tr-TR", false)); // Compare the code points in str2 and str3. Console.WriteLine(); Console.WriteLine("str2 is {0} to str3.", ((0 == String.CompareOrdinal(str2, str3)) ? "equal" : "not equal")); CodePoints("str1", str1); CodePoints("str2", str2); CodePoints("str3", str3); } public static void CodePoints(String title, String s) { Console.Write("{0}The code points in {1} are: {0}", Environment.NewLine, title); foreach (ushort u in s) Console.Write("{0:x4} ", u); Console.WriteLine(); } } /* This example produces the following results: str1 = 'indigo' str2 = Upper case copy of str1 using English-United States culture. str3 = Upper case copy of str1 using Turkish-Turkey culture. str2 is not equal to str3. The code points in str1 are: 0069 006e 0064 0069 0067 006f The code points in str2 are: 0049 004e 0044 0049 0047 004f The code points in str3 are: 0130 004e 0044 0130 0047 004f */
// Sample for String::ToUpper(CultureInfo) using namespace System; using namespace System::Globalization; void CodePoints( String^ title, String^ s ) { Console::Write( " {0}The code points in {1} are: {0}", Environment::NewLine, title ); System::Collections::IEnumerator^ myEnum = s->GetEnumerator(); while ( myEnum->MoveNext() ) { UInt16 u = safe_cast<Char>(myEnum->Current); Console::Write( "{0:x4} ", u ); } Console::WriteLine(); } int main() { String^ str1 = "indigo"; String^ str2; String^ str3; Console::WriteLine(); Console::WriteLine( "str1 = ' {0}'", str1 ); Console::WriteLine( "str2 = Upper case copy of str1 using English-United States culture." ); // str2 is an upper case copy of str1, using English-United States culture. str2 = str1->ToUpper( gcnew CultureInfo( "en-US",false ) ); // str3 is an upper case copy of str1, using Turkish-Turkey culture. Console::WriteLine( "str3 = Upper case copy of str1 using Turkish-Turkey culture." ); str3 = str1->ToUpper( gcnew CultureInfo( "tr-TR",false ) ); // Compare the code points in str2 and str3. Console::WriteLine(); Console::WriteLine( "str2 is {0} to str3.", ((0 == String::CompareOrdinal( str2, str3 )) ? (String^)"equal" : "not equal") ); CodePoints( "str1", str1 ); CodePoints( "str2", str2 ); CodePoints( "str3", str3 ); } /* This example produces the following results: str1 = 'indigo' str2 = Upper case copy of str1 using English-United States culture. str3 = Upper case copy of str1 using Turkish-Turkey culture. str2 is not equal to str3. The code points in str1 are: 0069 006e 0064 0069 0067 006f The code points in str2 are: 0049 004e 0044 0049 0047 004f The code points in str3 are: 0130 004e 0044 0130 0047 004f */
// Sample for String.ToUpper(CultureInfo) import System.*; import System.Globalization.*; class Sample { public static void main(String[] args) { String str1 = "indigo"; String str2, str3; Console.WriteLine(); Console.WriteLine("str1 = '{0}'", str1); Console.WriteLine("str2 = Upper case copy of str1 using English-" + "United States culture."); // str2 is an upper case copy of str1, using English-United States // culture. str2 = str1.ToUpper(new CultureInfo("en-US", false)); // str3 is an upper case copy of str1, using Turkish-Turkey culture. Console.WriteLine("str3 = Upper case copy of str1 using Turkish-" + "Turkey culture."); str3 = str1.ToUpper(new CultureInfo("tr-TR", false)); // Compare the code points in str2 and str3. Console.WriteLine(); Console.WriteLine("str2 is {0} to str3.", (0 == String.CompareOrdinal(str2, str3)) ? "equal" : "not equal"); CodePoints("str1", str1); CodePoints("str2", str2); CodePoints("str3", str3); } //main public static void CodePoints(String title, String s) { Console.Write("{0}The code points in {1} are: {0}", Environment.get_NewLine(), title); for (int iCtr = 0; iCtr < s.get_Length(); iCtr++) { UInt16 u = (UInt16)s.charAt(iCtr); Console.Write("{0:x4} ", u); } Console.WriteLine(); } //CodePoints } //Sample /* This example produces the following results: str1 = 'indigo' str2 = Upper case copy of str1 using English-United States culture. str3 = Upper case copy of str1 using Turkish-Turkey culture. str2 is not equal to str3. The code points in str1 are: 0069 006e 0064 0069 0067 006f The code points in str2 are: 0049 004e 0044 0049 0047 004f The code points in str3 are: 0130 004e 0044 0130 0047 004f */

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


String.ToUpper メソッド
Weblioに収録されているすべての辞書からString.ToUpperを検索する場合は、下記のリンクをクリックしてください。

- String.ToUpperのページへのリンク