public ApplyValueResult TryGetValueOnUi(out object value)
{
var result = ApplyValueResult.UnknownError;
value = null;
if (!mContainer.HasEnoughInformationToWork() || InstancePropertyType == null)
{
result = ApplyValueResult.NotEnoughInformation;
}
else
{
try
{
var usableString = ConvertStringToUsableValue();
var converter = TypeDescriptor.GetConverter(InstancePropertyType);
bool canConverterConvert = GetIfConverterCanConvert(converter);
if (canConverterConvert)
{
// The user may have put in a bad value
try
{
// This used to convert from invariant string, but we want to use commas if the native
// computer settings use commas
value = converter.ConvertFromString(usableString);
result = ApplyValueResult.Success;
}
catch (FormatException)
{
result = ApplyValueResult.InvalidSyntax;
}
catch
{
result = ApplyValueResult.InvalidSyntax;
}
}
else
{
result = ApplyValueResult.NotSupported;
}
}
catch
{
result = ApplyValueResult.UnknownError;
}
}
return(result);
}
public static bool TryGetValueOnInstance(this IDataUi dataUi, out object value)
{
//////////////////Early Out/////////////////////////////////
if (dataUi.HasEnoughInformationToWork() == false || dataUi.InstanceMember.IsWriteOnly)
{
value = null;
return(false);
}
////////////////End Early Out///////////////////////////////
value = dataUi.InstanceMember.Value;
return(true);
}
private static void GetIfValuesCanBeSetOnInstance(IDataUi dataUi, out ApplyValueResult result, out bool hasErrorOccurred)
{
result = ApplyValueResult.UnknownError;
hasErrorOccurred = false;
if (dataUi.HasEnoughInformationToWork() == false)
{
result = ApplyValueResult.NotEnoughInformation;
hasErrorOccurred = true;
}
if (dataUi.InstanceMember.IsReadOnly)
{
result = ApplyValueResult.NotSupported;
hasErrorOccurred = true;
}
if (dataUi.SuppressSettingProperty)
{
result = ApplyValueResult.NotEnabled;
hasErrorOccurred = true;
}
}
private static void GetIfValuesCanBeSetOnInstance(IDataUi dataUi, out ApplyValueResult result, out bool hasErrorOccurred)
{
result = ApplyValueResult.UnknownError;
hasErrorOccurred = false;
if (dataUi.HasEnoughInformationToWork() == false)
{
result = ApplyValueResult.NotEnoughInformation;
hasErrorOccurred = true;
}
if (dataUi.InstanceMember.IsReadOnly)
{
result = ApplyValueResult.NotSupported;
hasErrorOccurred = true;
}
if (dataUi.SuppressSettingProperty)
{
result = ApplyValueResult.NotEnabled;
hasErrorOccurred = true;
}
}