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CultureInfo::ReadOnly Method
Visual Studio 2010
Returns a read-only wrapper around the specified CultureInfo.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- ci
- Type: System.Globalization::CultureInfo
The CultureInfo to wrap.
| Exception | Condition |
|---|---|
| ArgumentNullException | ci is null. |
This wrapper prevents any modifications to ci, or the objects returned by the ci.DateTimeFormat and ci.NumberFormat properties.
The following code example shows that the ReadOnly method helps protect the DateTimeFormatInfo and NumberFormatInfo instances associated with the 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. */
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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