CultureInfo.IsReadOnly Proprietà
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Ottiene un valore che indica se la classe CultureInfo corrente è di sola lettura.
public:
property bool IsReadOnly { bool get(); };C#
public bool IsReadOnly { get; }member this.IsReadOnly : boolPublic ReadOnly Property IsReadOnly As Boolean
true se la classe CultureInfo corrente è in sola lettura; in caso contrario false. Il valore predefinito è false.
Nell'esempio di codice seguente viene illustrato che IsReadOnly consente anche di proteggere le DateTimeFormatInfo istanze e NumberFormatInfo associate a CultureInfo.
using namespace System;
using namespace System::Globalization;
int main()
{
// Creates a CultureInfo.
CultureInfo^ myCI = gcnew CultureInfo( "en-US" );
// Creates a read-only CultureInfo based on myCI ->
CultureInfo^ myReadOnlyCI = CultureInfo::ReadOnly( myCI );
// Display the read-only status of each CultureInfo and their DateTimeFormat and NumberFormat properties.
Console::WriteLine( "myCI is {0}.", myCI->IsReadOnly ? (String^)"read only" : "writable" );
Console::WriteLine( "myCI -> DateTimeFormat is {0}.", myCI->DateTimeFormat->IsReadOnly ? (String^)"read only" : "writable" );
Console::WriteLine( "myCI -> NumberFormat is {0}.", myCI->NumberFormat->IsReadOnly ? (String^)"read only" : "writable" );
Console::WriteLine( "myReadOnlyCI is {0}.", myReadOnlyCI->IsReadOnly ? (String^)"read only" : "writable" );
Console::WriteLine( "myReadOnlyCI -> DateTimeFormat is {0}.", myReadOnlyCI->DateTimeFormat->IsReadOnly ? (String^)"read only" : "writable" );
Console::WriteLine( "myReadOnlyCI -> NumberFormat is {0}.", myReadOnlyCI->NumberFormat->IsReadOnly ? (String^)"read only" : "writable" );
}
/*
This code produces the following output.
myCI is writable.
myCI -> DateTimeFormat is writable.
myCI -> NumberFormat is writable.
myReadOnlyCI is read only.
myReadOnlyCI -> DateTimeFormat is read only.
myReadOnlyCI -> NumberFormat is read only.
*/
C#
using System;
using System.Globalization;
public class SamplesCultureInfo {
public static void Main() {
// Creates a CultureInfo.
CultureInfo myCI = new CultureInfo( "en-US" );
// Creates a read-only CultureInfo based on myCI.
CultureInfo myReadOnlyCI = CultureInfo.ReadOnly( myCI );
// Display the read-only status of each CultureInfo and their DateTimeFormat and NumberFormat properties.
Console.WriteLine( "myCI is {0}.", myCI.IsReadOnly ? "read only" : "writable" );
Console.WriteLine( "myCI.DateTimeFormat is {0}.", myCI.DateTimeFormat.IsReadOnly ? "read only" : "writable" );
Console.WriteLine( "myCI.NumberFormat is {0}.", myCI.NumberFormat.IsReadOnly ? "read only" : "writable" );
Console.WriteLine( "myReadOnlyCI is {0}.", myReadOnlyCI.IsReadOnly ? "read only" : "writable" );
Console.WriteLine( "myReadOnlyCI.DateTimeFormat is {0}.", myReadOnlyCI.DateTimeFormat.IsReadOnly ? "read only" : "writable" );
Console.WriteLine( "myReadOnlyCI.NumberFormat is {0}.", myReadOnlyCI.NumberFormat.IsReadOnly ? "read only" : "writable" );
}
}
/*
This code produces the following output.
myCI is writable.
myCI.DateTimeFormat is writable.
myCI.NumberFormat is writable.
myReadOnlyCI is read only.
myReadOnlyCI.DateTimeFormat is read only.
myReadOnlyCI.NumberFormat is read only.
*/
Imports System.Globalization
Public Class SamplesCultureInfo
Public Shared Sub Main()
' Creates a CultureInfo.
Dim myCI As New CultureInfo("en-US")
' Creates a read-only CultureInfo based on myCI.
Dim myReadOnlyCI As CultureInfo = CultureInfo.ReadOnly(myCI)
' Display the read-only status of each CultureInfo and their DateTimeFormat and NumberFormat properties.
If myCI.IsReadOnly Then
Console.WriteLine("myCI is read only.")
Else
Console.WriteLine("myCI is writable.")
End If
If myCI.DateTimeFormat.IsReadOnly Then
Console.WriteLine("myCI.DateTimeFormat is read only.")
Else
Console.WriteLine("myCI.DateTimeFormat is writable.")
End If
If myCI.NumberFormat.IsReadOnly Then
Console.WriteLine("myCI.NumberFormat is read only.")
Else
Console.WriteLine("myCI.NumberFormat is writable.")
End If
If myReadOnlyCI.IsReadOnly Then
Console.WriteLine("myReadOnlyCI is read only.")
Else
Console.WriteLine("myReadOnlyCI is writable.")
End If
If myReadOnlyCI.DateTimeFormat.IsReadOnly Then
Console.WriteLine("myReadOnlyCI.DateTimeFormat is read only.")
Else
Console.WriteLine("myReadOnlyCI.DateTimeFormat is writable.")
End If
If myReadOnlyCI.NumberFormat.IsReadOnly Then
Console.WriteLine("myReadOnlyCI.NumberFormat is read only.")
Else
Console.WriteLine("myReadOnlyCI.NumberFormat is writable.")
End If
End Sub
End Class
' This code produces the following output.
'
' myCI is writable.
' myCI.DateTimeFormat is writable.
' myCI.NumberFormat is writable.
' myReadOnlyCI is read only.
' myReadOnlyCI.DateTimeFormat is read only.
' myReadOnlyCI.NumberFormat is read only.
Se l'oggetto CultureInfo è di sola lettura, le DateTimeFormat istanze e NumberFormat sono anche di sola lettura.
| Prodotto | Versioni |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
Collabora con noi su GitHub
L'origine per questo contenuto è disponibile in GitHub, dove puoi anche creare ed esaminare i problemi e le richieste pull. Per altre informazioni, vedi la nostra guida per i collaboratori.
Feedback su .NET
.NET è un progetto open source. Seleziona un collegamento per fornire feedback: