/// <include file='doc\CultureInfo.uex' path='docs/doc[@for="CultureInfo.Clone"]/*' />
public virtual Object Clone()
{
CultureInfo ci = (CultureInfo)MemberwiseClone();
//If this is exactly our type, we can make certain optimizations so that we don't allocate NumberFormatInfo or DTFI unless
//they've already been allocated. If this is a derived type, we'll take a more generic codepath.
if (ci.GetType() == typeof(CultureInfo))
{
if (dateTimeInfo != null)
{
ci.dateTimeInfo = (DateTimeFormatInfo)dateTimeInfo.Clone();
}
if (numInfo != null)
{
ci.numInfo = (NumberFormatInfo)numInfo.Clone();
}
ci.m_isReadOnly = false;
}
else
{
ci.m_isReadOnly = false;
ci.DateTimeFormat = (DateTimeFormatInfo)this.DateTimeFormat.Clone();
ci.NumberFormat = (NumberFormatInfo)this.NumberFormat.Clone();
}
return(ci);
}
internal static bool VerifyCultureName(CultureInfo culture, bool throwException)
{
BCLDebug.Assert(culture != null, "[CultureInfo.VerifyCultureName]culture!=null");
//If we have an instance of one of our CultureInfos, the user can't have changed the
//name and we know that all names are valid in files.
if (culture.GetType() == typeof(CultureInfo))
{
return(true);
}
String name = culture.Name;
for (int i = 0; i < name.Length; i++)
{
char c = name[i];
if (Char.IsLetterOrDigit(c) || c == '-' || c == '_')
{
continue;
}
if (throwException)
{
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidResourceCultureName", name));
}
return(false);
}
return(true);
}
public static CultureInfo GetPersianCultureInfo()
{
var persianCultureInfo = new CultureInfo("fa-IR");
SetPersianDateTimeFormatInfo(persianCultureInfo.DateTimeFormat);
SetNumberFormatInfo(persianCultureInfo.NumberFormat);
var cal = new PersianCalendar();
FieldInfo fieldInfo = persianCultureInfo.GetType().GetField("calendar", BindingFlags.NonPublic | BindingFlags.Instance);
if (fieldInfo != null)
fieldInfo.SetValue(persianCultureInfo, cal);
FieldInfo info = persianCultureInfo.DateTimeFormat.GetType().GetField("calendar", BindingFlags.NonPublic | BindingFlags.Instance);
if (info != null)
info.SetValue(persianCultureInfo.DateTimeFormat, cal);
return persianCultureInfo;
}
/// <include file='doc\CultureInfo.uex' path='docs/doc[@for="CultureInfo.ReadOnly"]/*' />
public static CultureInfo ReadOnly(CultureInfo ci)
{
if (ci == null)
{
throw new ArgumentNullException("ci");
}
if (ci.IsReadOnly)
{
return(ci);
}
CultureInfo info = (CultureInfo)(ci.MemberwiseClone());
//If this is exactly our type, we can make certain optimizations so that we don't allocate NumberFormatInfo or DTFI unless
//they've already been allocated. If this is a derived type, we'll take a more generic codepath.
if (ci.GetType() == typeof(CultureInfo))
{
if (ci.dateTimeInfo != null)
{
info.dateTimeInfo = DateTimeFormatInfo.ReadOnly(ci.dateTimeInfo);
}
if (ci.numInfo != null)
{
info.numInfo = NumberFormatInfo.ReadOnly(ci.numInfo);
}
}
else
{
info.DateTimeFormat = DateTimeFormatInfo.ReadOnly(ci.DateTimeFormat);
info.NumberFormat = NumberFormatInfo.ReadOnly(ci.NumberFormat);
}
// Don't set the read-only flag too early.
// We should set the read-only flag here. Otherwise, info.DateTimeFormat will not be able to set.
info.m_isReadOnly = true;
return(info);
}
/// <include file='doc\CultureInfo.uex' path='docs/doc[@for="CultureInfo.ReadOnly"]/*' />
public static CultureInfo ReadOnly(CultureInfo ci) {
if (ci == null) {
throw new ArgumentNullException("ci");
}
if (ci.IsReadOnly) {
return (ci);
}
CultureInfo info = (CultureInfo)(ci.MemberwiseClone());
//If this is exactly our type, we can make certain optimizations so that we don't allocate NumberFormatInfo or DTFI unless
//they've already been allocated. If this is a derived type, we'll take a more generic codepath.
if (ci.GetType()==typeof(CultureInfo)) {
if (ci.dateTimeInfo != null) {
info.dateTimeInfo = DateTimeFormatInfo.ReadOnly(ci.dateTimeInfo);
}
if (ci.numInfo != null) {
info.numInfo = NumberFormatInfo.ReadOnly(ci.numInfo);
}
} else {
info.DateTimeFormat = DateTimeFormatInfo.ReadOnly(ci.DateTimeFormat);
info.NumberFormat = NumberFormatInfo.ReadOnly(ci.NumberFormat);
}
// Don't set the read-only flag too early.
// We should set the read-only flag here. Otherwise, info.DateTimeFormat will not be able to set.
info.m_isReadOnly = true;
return (info);
}
internal static bool VerifyCultureName(CultureInfo culture, bool throwException) {
BCLDebug.Assert(culture!=null, "[CultureInfo.VerifyCultureName]culture!=null");
//If we have an instance of one of our CultureInfos, the user can't have changed the
//name and we know that all names are valid in files.
if (culture.GetType()==typeof(CultureInfo)) {
return true;
}
String name = culture.Name;
for (int i=0; i<name.Length; i++) {
char c = name[i];
if (Char.IsLetterOrDigit(c) || c=='-' || c=='_') {
continue;
}
if (throwException) {
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidResourceCultureName", name));
}
return false;
}
return true;
}
