private static bool CanBind(BindingProviderContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
// first, verify the file path binding (if it contains binding parameters)
ParameterInfo parameter = context.Parameter;
FileAttribute attribute = parameter.GetCustomAttribute <FileAttribute>(inherit: false);
BindablePath path = new BindablePath(attribute.Path);
path.ValidateContractCompatibility(context.BindingDataContract);
// next, verify that the type is one of the types we support
IEnumerable <Type> types = StreamValueBinder.SupportedTypes.Union(new Type[] { typeof(FileStream) });
return(ValueBinder.MatchParameterType(parameter, types));
}
public Task <IValueProvider> BindAsync(BindingContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
FileInfo fileInfo = null;
if (context != null)
{
BindablePath path = new BindablePath(_attribute.Path);
string boundFileName = path.Bind(context.BindingData);
string filePath = Path.Combine(_config.RootPath, boundFileName);
fileInfo = new FileInfo(filePath);
}
return(BindAsync(fileInfo, context.ValueContext));
}
