internal static object InternalGetDefaultValue(Type type, string strValue, object defaultValue,
ReadSettings settings, bool throwException)
{
ITkTypeConverter converter = TkTypeDescriptor.GetConverter(type);
if (throwException)
{
TkDebug.AssertNotNull(converter, string.Format(ObjectUtil.SysCulture,
"无法获取类型{0}的TypeConverter，请确认是否为其配置TypeConverterAttribute",
type), null);
}
else
{
if (converter == null)
{
return(GetTypeDefaultValue(type));
}
}
try
{
return(strValue == null?InternalGetDefaultValue(type, defaultValue)
: converter.ConvertFromString(strValue, settings));
}
catch
{
return(InternalGetDefaultValue(type, defaultValue));
}
}
internal static object InternalGetValue(Type type, string strValue,
object defaultValue, ReadSettings settings, ITkTypeConverter converter)
{
try
{
return(strValue == null?GetDefaultValue(type, defaultValue, converter, settings)
: converter.ConvertFromString(strValue, settings));
}
catch
{
return(GetDefaultValue(type, defaultValue, converter, settings));
}
}
public object ConvertFromString(string text, ReadSettings settings)
{
if (string.IsNullOrEmpty(text))
{
return(null);
}
object result = fConverter.ConvertFromString(text, settings);
IConvertStatus status = fConverter as IConvertStatus;
if (status != null && !status.IsSuccess)
{
return(null);
}
return(result);
}
private static object GetDefaultValue(Type type, object defaultValue,
ITkTypeConverter converter, ReadSettings settings)
{
if (defaultValue != null)
{
if (ObjectUtil.IsSubType(type, defaultValue.GetType()))
{
return(defaultValue);
}
else
{
try
{
string value = defaultValue.ToString();
return(converter.ConvertFromString(value, settings));
}
catch
{
return(null);
}
}
}
else
{
if (type.IsEnum)
{
return(GetFirstEnumValue(type));
}
else if (type.IsValueType)
{
return(ObjectUtil.CreateObject(type));
}
else
{
return(null);
}
}
}