// Converts the value of a single element to a desired type.
private static object CreateObjectFromString(string value, Type dstType)
{
var underlyingType = Nullable.GetUnderlyingType(dstType);
if (underlyingType != null)
{
if (string.IsNullOrEmpty(value))
{
return(null); // Returns Nullable<T>().
}
// Otherwise, continue with our conversion using
// the underlying type of the nullable.
dstType = underlyingType;
}
var converter = Configuration.FindTypeStringConverter(dstType);
try
{
return(converter.ConvertFromString(value, dstType));
}
catch (Exception ex)
{
throw SettingValueCastException.Create(value, dstType, ex);
}
}
// Converts the value of a single element to a desired type.
private static object CreateObjectFromString(string value, Type dstType)
{
var underlyingType = Nullable.GetUnderlyingType(dstType);
if (underlyingType != null)
{
if (string.IsNullOrEmpty(value))
{
return(null); // Returns Nullable<T>().
}
// Otherwise, continue with our conversion using
// the underlying type of the nullable.
dstType = underlyingType;
}
var converter = Configuration.FindTypeStringConverter(dstType);
if (converter == Configuration.FallbackConverter)
{
// The fallback converter is not able to create arbitrary objects
// from strings, so this means that there is no type converter
// registered for dstType.
throw SettingValueCastException.CreateBecauseConverterMissing(value, dstType);
}
try
{
return(converter.ConvertFromString(value, dstType));
}
catch (Exception ex)
{
throw SettingValueCastException.Create(value, dstType, ex);
}
}
public string ConvertToString(object value)
{
try
{
var converter = TypeDescriptor.GetConverter(value);
return(converter.ConvertToString(null, Configuration.CultureInfo, value));
}
catch (Exception ex)
{
throw SettingValueCastException.Create(value.ToString(), value.GetType(), ex);
}
}
public object ConvertFromString(string value, Type hint)
{
try
{
var converter = TypeDescriptor.GetConverter(hint);
return(converter.ConvertFrom(null, Configuration.CultureInfo, value));
}
catch (Exception ex)
{
throw SettingValueCastException.Create(value, hint, ex);
}
}
public override object ConvertFromString(string value, Type hint)
{
switch (value.ToLowerInvariant())
{
case "false":
case "off":
case "no":
case "n":
case "0":
return(false);
case "true":
case "on":
case "yes":
case "y":
case "1":
return(true);
}
throw SettingValueCastException.Create(value, hint, null);
}
public override object ConvertFromString(string value, Type hint)
{
return(TryConvertFromString(value, hint) ?? throw SettingValueCastException.Create(value, hint, null));
}