StringWriter Costruttori

Origine:

StringWriter.cs

Origine:

StringWriter.cs

Origine:

StringWriter.cs

public:
 StringWriter();

public StringWriter ();

Public Sub New ()

Esempio

Nell'esempio di codice seguente viene illustrato come costruire una stringa usando la StringWriter classe .

using namespace System;
using namespace System::IO;
using namespace System::Text;
int main()
{
   StringWriter^ strWriter = gcnew StringWriter;
   
   // Use the three overloads of the Write method that are 
   // overridden by the StringWriter class.
   strWriter->Write( "file path characters are: " );
   strWriter->Write( Path::InvalidPathChars, 0, Path::InvalidPathChars->Length );
   strWriter->Write( Char::Parse( "." ) );
   
   // Use the underlying StringBuilder for more complex 
   // manipulations of the string.
   strWriter->GetStringBuilder()->Insert( 0, "Invalid " );
   
   Console::WriteLine( "The following string is {0} encoded.\n{1}", strWriter->Encoding->EncodingName, strWriter->ToString() );
   
}

using System;
using System.IO;
using System.Text;

class StrWriter
{
    static void Main()
    {
        StringWriter strWriter  = new StringWriter();

        // Use the three overloads of the Write method that are
        // overridden by the StringWriter class.
        strWriter.Write("file path characters are: ");
        strWriter.Write(
            Path.InvalidPathChars, 0, Path.InvalidPathChars.Length);
        strWriter.Write('.');

        // Use the underlying StringBuilder for more complex
        // manipulations of the string.
        strWriter.GetStringBuilder().Insert(0, "Invalid ");

        Console.WriteLine("The following string is {0} encoded.\n{1}",
            strWriter.Encoding.EncodingName, strWriter.ToString());
    }
}

Imports System.IO
Imports System.Text

Public Class StrWriter

    Shared Sub Main()

        Dim strWriter As StringWriter = new StringWriter()

        ' Use the three overloads of the Write method that are 
        ' overridden by the StringWriter class.
        strWriter.Write("file path characters are: ")
        strWriter.Write( _
            Path.InvalidPathChars, 0, Path.InvalidPathChars.Length)
        strWriter.Write("."C)

        ' Use the underlying StringBuilder for more complex 
        ' manipulations of the string.
        strWriter.GetStringBuilder().Insert(0, "Invalid ")

        Console.WriteLine("The following string is {0} encoded." _
            & vbCrLf & "{1}", _
            strWriter.Encoding.EncodingName, strWriter.ToString())

    End Sub
End Class

Commenti

Viene creato automaticamente un nuovo StringBuilder oggetto e associato alla nuova istanza della StringWriter classe. Poiché un controllo di formato non è specificato per questo costruttore, la nuova istanza verrà inizializzata con CultureInfo.CurrentCulture.

Nella tabella seguente sono elencati esempi di altre attività di I/O tipiche o correlate.

Vedi anche

• File e Stream I/O
• Procedura: Leggere testo da un file
• Procedura: Scrivere un testo in un file

Origine:

StringWriter.cs

Origine:

StringWriter.cs

Origine:

StringWriter.cs

public:
 StringWriter(IFormatProvider ^ formatProvider);

public StringWriter (IFormatProvider formatProvider);

public StringWriter (IFormatProvider? formatProvider);

new System.IO.StringWriter : IFormatProvider -> System.IO.StringWriter

Public Sub New (formatProvider As IFormatProvider)

Parametri

Esempio

Nell'esempio di codice seguente viene illustrato come costruire una stringa in impostazioni cultura specifiche.

using namespace System;
using namespace System::Globalization;
using namespace System::IO;
int main()
{
   StringWriter^ strWriter = gcnew StringWriter( gcnew CultureInfo(  "ar-DZ" ) );
   strWriter->Write( DateTime::Now );
   
   Console::WriteLine( "Current date and time using the invariant culture: {0}\n"
   "Current date and time using the Algerian culture: {1}", DateTime::Now.ToString(), strWriter->ToString() );
   
}

using System;
using System.Globalization;
using System.IO;

class StrWriter
{
    static void Main()
    {
        StringWriter strWriter =
            new StringWriter(new CultureInfo("ar-DZ"));

        strWriter.Write(DateTime.Now);

        Console.WriteLine(
            "Current date and time using the invariant culture: {0}\n" +
            "Current date and time using the Algerian culture: {1}",
            DateTime.Now.ToString(), strWriter.ToString());
    }
}

Imports System.Globalization
Imports System.IO

Public Class StrWriter

    Shared Sub Main()
        Dim strWriter As New StringWriter(New CultureInfo("ar-DZ"))

        strWriter.Write(DateTime.Now)

        Console.WriteLine( _
            "Current date and time using the invariant culture: {0}" _
            & vbCrLf & _
            "Current date and time using the Algerian culture: {1}", _
            DateTime.Now.ToString(), strWriter.ToString())
    End Sub

End Class

Commenti

Viene creato automaticamente un nuovo StringBuilder oggetto e associato alla nuova istanza della StringWriter classe.

Nella tabella seguente sono elencati esempi di altre attività di I/O tipiche o correlate.

Vedi anche

• File e Stream I/O
• Procedura: Leggere testo da un file
• Procedura: Scrivere un testo in un file

Origine:

StringWriter.cs

Origine:

StringWriter.cs

Origine:

StringWriter.cs

public:
 StringWriter(System::Text::StringBuilder ^ sb);

public StringWriter (System.Text.StringBuilder sb);

new System.IO.StringWriter : System.Text.StringBuilder -> System.IO.StringWriter

Public Sub New (sb As StringBuilder)

Parametri

Eccezioni

Esempio

Nell'esempio di codice seguente viene illustrato l'uso della classe per modificare la StringBuilder stringa sottostante in un oggetto chiuso StringWriter.

using namespace System;
using namespace System::IO;
using namespace System::Text;
int main()
{
   StringBuilder^ strBuilder = gcnew StringBuilder( "file path characters are: " );
   StringWriter^ strWriter = gcnew StringWriter( strBuilder );
   strWriter->Write( Path::InvalidPathChars, 0, Path::InvalidPathChars->Length );
   
   strWriter->Close();
   
   // Since the StringWriter is closed, an exception will 
   // be thrown if the Write method is called. However, 
   // the StringBuilder can still manipulate the string.
   strBuilder->Insert( 0, "Invalid " );
   Console::WriteLine( strWriter->ToString() );
   
}

using System;
using System.IO;
using System.Text;

class StrWriter
{
    static void Main()
    {
        StringBuilder strBuilder =
            new StringBuilder("file path characters are: ");
        StringWriter strWriter = new StringWriter(strBuilder);

        strWriter.Write(
            Path.InvalidPathChars, 0, Path.InvalidPathChars.Length);

        strWriter.Close();

        // Since the StringWriter is closed, an exception will
        // be thrown if the Write method is called. However,
        // the StringBuilder can still manipulate the string.
        strBuilder.Insert(0, "Invalid ");
        Console.WriteLine(strWriter.ToString());
    }
}

Imports System.IO
Imports System.Text

Public Class StrWriter

    Shared Sub Main()
        Dim strBuilder As New StringBuilder( _
            "file path characters are: ")
        Dim strWriter As New StringWriter(strBuilder)

        strWriter.Write( _
            Path.InvalidPathChars, 0, Path.InvalidPathChars.Length)

        strWriter.Close()

        ' Since the StringWriter is closed, an exception will 
        ' be thrown if the Write method is called. However, 
        ' the StringBuilder can still manipulate the string.
        strBuilder.Insert(0, "Invalid ")
        Console.WriteLine(strWriter.ToString())
    End Sub

End Class

Commenti

Poiché un controllo di formato non è specificato per questo costruttore, la nuova istanza verrà inizializzata con CultureInfo.CurrentCulture.

Nella tabella seguente sono elencati esempi di altre attività di I/O tipiche o correlate.

Vedi anche

• File e Stream I/O
• Procedura: Leggere testo da un file
• Procedura: Scrivere un testo in un file

Origine:

StringWriter.cs

Origine:

StringWriter.cs

Origine:

StringWriter.cs

public:
 StringWriter(System::Text::StringBuilder ^ sb, IFormatProvider ^ formatProvider);

public StringWriter (System.Text.StringBuilder sb, IFormatProvider formatProvider);

public StringWriter (System.Text.StringBuilder sb, IFormatProvider? formatProvider);

new System.IO.StringWriter : System.Text.StringBuilder * IFormatProvider -> System.IO.StringWriter

Public Sub New (sb As StringBuilder, formatProvider As IFormatProvider)

Parametri

Eccezioni

Commenti

Nella tabella seguente sono elencati esempi di altre attività di I/O tipiche o correlate.

Vedi anche

• I/O di file e Stream
• Procedura: Leggere testo da un file
• Procedura: Scrivere un testo in un file