/// <summary>
/// Converts the specified value object to a <see cref='System.Globalization.CultureInfo'/>
/// object.
/// </summary>
public override object?ConvertFrom(ITypeDescriptorContext?context, CultureInfo?culture, object value)
{
// Only when GetCultureName returns culture.Name, we use CultureInfoMapper
// (Since CultureInfoMapper will transfer Culture.DisplayName to Culture.Name).
// Otherwise, we just keep the value unchanged.
if (value is string text)
{
if (GetCultureName(CultureInfo.InvariantCulture).Equals(string.Empty))
{
text = CultureInfoMapper.GetCultureInfoName((string)value);
}
string defaultCultureString = DefaultCultureString;
if (culture != null && culture.Equals(CultureInfo.InvariantCulture))
{
defaultCultureString = DefaultInvariantCultureString;
}
// Look for the default culture info.
CultureInfo?retVal = null;
if (string.IsNullOrEmpty(text) || string.Equals(text, defaultCultureString, StringComparison.Ordinal))
{
retVal = CultureInfo.InvariantCulture;
}
// Now look in our set of installed cultures.
if (retVal == null)
{
foreach (CultureInfo info in GetStandardValues(context))
{
if (info != null && string.Equals(GetCultureName(info), text, StringComparison.Ordinal))
{
retVal = info;
break;
}
}
}
// Now try to create a new culture info from this value.
if (retVal == null)
{
try
{
retVal = new CultureInfo(text);
}
catch
{
}
}
// Finally, try to find a partial match.
if (retVal == null)
{
foreach (CultureInfo info in _values !)
{
if (info != null && GetCultureName(info).StartsWith(text, StringComparison.CurrentCulture))
{
retVal = info;
break;
}
}
}
// No good. We can't support it.
if (retVal == null)
{
throw new ArgumentException(SR.Format(SR.CultureInfoConverterInvalidCulture, (string)value), nameof(value));
}
return(retVal);
}
return(base.ConvertFrom(context, culture, value));
}
/// <summary>
/// <para>
/// Converts the specified value object to a <see cref='System.Globalization.CultureInfo'/>
/// object.
/// </para>
/// </summary>
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value is string)
{
// Hack, Only when GetCultureName returns culture.Name, we use CultureInfoMapper
// (Since CultureInfoMapper will transfer Culture.DisplayName to Culture.Name).
// Otherwise, we just keep the value unchange.
string text = (string)value;
if (GetCultureName(CultureInfo.InvariantCulture).Equals(""))
{
text = CultureInfoMapper.GetCultureInfoName((string)value);
}
CultureInfo retVal = null;
CultureInfo currentUICulture = CultureInfo.CurrentUICulture;
if (culture != null && culture.Equals(CultureInfo.InvariantCulture))
{
CultureInfo.CurrentUICulture = culture;
}
try
{
// Look for the default culture info.
//
if (text == null || text.Length == 0 || string.Compare(text, DefaultCultureString, StringComparison.Ordinal) == 0)
{
retVal = CultureInfo.InvariantCulture;
}
// Now look in our set of installed cultures.
//
if (retVal == null)
{
ICollection values = GetStandardValues(context);
IEnumerator e = values.GetEnumerator();
while (e.MoveNext())
{
CultureInfo info = (CultureInfo)e.Current;
if (info != null && string.Compare(GetCultureName(info), text, StringComparison.Ordinal) == 0)
{
retVal = info;
break;
}
}
}
// Now try to create a new culture info from this value
//
if (retVal == null)
{
try
{
retVal = new CultureInfo(text);
}
catch { }
}
// Finally, try to find a partial match
//
if (retVal == null)
{
text = text.ToLower(CultureInfo.CurrentCulture);
IEnumerator e = _values.GetEnumerator();
while (e.MoveNext())
{
CultureInfo info = (CultureInfo)e.Current;
if (info != null && GetCultureName(info).ToLower(CultureInfo.CurrentCulture).StartsWith(text))
{
retVal = info;
break;
}
}
}
}
finally
{
CultureInfo.CurrentUICulture = culture;
}
// No good. We can't support it.
//
if (retVal == null)
{
throw new ArgumentException(SR.Format(SR.CultureInfoConverterInvalidCulture, (string)value));
}
return(retVal);
}
return(base.ConvertFrom(context, culture, value));
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (!(value is string))
{
return(base.ConvertFrom(context, culture, value));
}
string strA = (string)value;
if (this.GetCultureName(CultureInfo.InvariantCulture).Equals(""))
{
strA = CultureInfoMapper.GetCultureInfoName((string)value);
}
CultureInfo invariantCulture = null;
CultureInfo currentUICulture = Thread.CurrentThread.CurrentUICulture;
if ((culture != null) && culture.Equals(CultureInfo.InvariantCulture))
{
Thread.CurrentThread.CurrentUICulture = culture;
}
try
{
if (((strA == null) || (strA.Length == 0)) || (string.Compare(strA, this.DefaultCultureString, StringComparison.Ordinal) == 0))
{
invariantCulture = CultureInfo.InvariantCulture;
}
if (invariantCulture == null)
{
IEnumerator enumerator = ((IEnumerable)this.GetStandardValues(context)).GetEnumerator();
while (enumerator.MoveNext())
{
CultureInfo current = (CultureInfo)enumerator.Current;
if ((current != null) && (string.Compare(this.GetCultureName(current), strA, StringComparison.Ordinal) == 0))
{
invariantCulture = current;
break;
}
}
}
if (invariantCulture == null)
{
try
{
invariantCulture = new CultureInfo(strA);
}
catch
{
}
}
if (invariantCulture == null)
{
strA = strA.ToLower(CultureInfo.CurrentCulture);
IEnumerator enumerator2 = this.values.GetEnumerator();
while (enumerator2.MoveNext())
{
CultureInfo info4 = (CultureInfo)enumerator2.Current;
if ((info4 != null) && this.GetCultureName(info4).ToLower(CultureInfo.CurrentCulture).StartsWith(strA))
{
invariantCulture = info4;
goto Label_0138;
}
}
}
}
finally
{
Thread.CurrentThread.CurrentUICulture = currentUICulture;
}
Label_0138:
if (invariantCulture == null)
{
throw new ArgumentException(SR.GetString("CultureInfoConverterInvalidCulture", new object[] { (string)value }));
}
return(invariantCulture);
}
