private AttributeInfo[] GetAssemblyAttributes()
{
return(_metadataReader.CustomAttributes
.Select(_metadataReader.GetCustomAttribute)
.Where(x => x.Constructor.Kind == HandleKind.MemberReference && x.Parent.Kind == HandleKind.AssemblyDefinition)
.Select(customAttribute =>
{
var constructorRef = _metadataReader.GetMemberReference((MemberReferenceHandle)customAttribute.Constructor);
var attributeTypeRefHandle = (TypeReferenceHandle)constructorRef.Parent;
var typeProvider = new AttributeTypeProvider();
var attributeTypeName = typeProvider.GetTypeFromReference(_metadataReader, attributeTypeRefHandle, 0);
try
{
var customAttributeValues = customAttribute.DecodeValue(typeProvider);
return (attributeTypeName, customAttributeValues);
}
catch (UnknownTypeException)
{
return default((string Name, CustomAttributeValue <string> Args)?);
}
})
.Where(x => x.HasValue && x.Value.Name.StartsWith("System.Reflection.Assembly"))
.Select(x => new AttributeInfo(
Regex.Replace(x.Value.Name, @"^System\.Reflection\.Assembly(\w+)Attribute", "$1"),
x.Value.Args.FixedArguments.FirstOrDefault().Value.ToString()
))
.ToArray());
}
public AoGISFields(IFields fields)
{
if (fields == null)
{
throw new ArgumentNullException("fields");
}
int length = fields.FieldCount;
for (int i = 0; i < length; i++)
{
IField field = fields.get_Field(i);
if (field.Type == esriFieldType.esriFieldTypeGeometry)
{
_geometryType = GeometryTypeProvider.GetGeometryType(field.GeometryDef.GeometryType);
}
else
{
DataColumn col = AttributeTypeProvider.GetAttributeType(field as IField2);
if (col != null)
{
_attributeFields.Add(col);
}
}
}
if (_geometryType == null)
{
_attributeFields = null;
throw new ArgumentException("The geometry field is missing or the geometry type is not supported.", "fields");
}
}
public IEnumerable <AttributeInfo> GetAssemblyAttributes()
{
foreach (var attributeHandle in _metadataReader.CustomAttributes)
{
var customAttribute = _metadataReader.GetCustomAttribute(attributeHandle);
if (customAttribute.Constructor.Kind != HandleKind.MemberReference ||
customAttribute.Parent.Kind != HandleKind.AssemblyDefinition)
{
continue;
}
var constructorRef = _metadataReader.GetMemberReference((MemberReferenceHandle)customAttribute.Constructor);
var attributeTypeRefHandle = (TypeReferenceHandle)constructorRef.Parent;
var typeProvider = new AttributeTypeProvider();
var attributeTypeName = typeProvider.GetTypeFromReference(_metadataReader, attributeTypeRefHandle, 0);
AttributeInfo?attrInfo = null;
try
{
var customAttributeValues = customAttribute.DecodeValue(typeProvider);
attrInfo = new AttributeInfo(
attributeTypeName,
customAttributeValues.FixedArguments.ToArray(),
customAttributeValues.NamedArguments.ToArray());
}
catch (UnknownTypeException)
{
// It could happen that we cannot resolve some argument type (e.g. for custom attributes).
// In this case simply omit the attribute and try to read other ones.
}
if (attrInfo != null)
{
yield return(attrInfo);
}
}
}
