Xamarin.Mac Binding issue - binding

Question

I am Working on the Xamarin.MAc Project. In my project I need to Use Objective C Code so I going to bind and use in my Xamarin project.
I am using Objective sharpie for generating the Interface and enum file. that's working fine but i am not able to generate the .dll file.
This is my .cs files,
using System;
using System.Drawing;
using MonoMac.Foundation;
using MonoMac.AppKit;
using MonoMac.ObjCRuntime;
using System.Collections.Generic;
namespace BLVirtualDrive {
// #interface BaseItemModel : NSObject
[BaseType (typeof (NSObject))]
interface BaseItemModel {
// #property (nonatomic, strong) NSString * name;
[Export ("name", ArgumentSemantic.Retain)]
string Name { get; set; }
// #property unsigned long long id;
[Export ("id")]
ulong Id { get; set; }
// #property unsigned long long parentId;
[Export ("parentId")]
ulong ParentId { get; set; }
}
// #interface FileModel : BaseItemModel
[BaseType (typeof (BaseItemModel))]
interface FileModel {
// #property unsigned long long currentBufferSize;
[Export ("currentBufferSize")]
ulong CurrentBufferSize { get; set; }
// #property unsigned long long totalFileSize;
[Export ("totalFileSize")]
ulong TotalFileSize { get; set; }
// #property unsigned long long startByte;
[Export ("startByte")]
ulong StartByte { get; set; }
// #property unsigned long long endByte;
[Export ("endByte")]
ulong EndByte { get; set; }
// #property (nonatomic, strong) NSData * data;
[Export ("data", ArgumentSemantic.Assign)]
NSData Data { get; set; }
}
// #interface FolderModel : BaseItemModel
[BaseType (typeof (BaseItemModel))]
interface FolderModel {
}
// #interface ContentItemModel : NSObject
[BaseType (typeof (NSObject))]
interface ContentItemModel {
// #property (nonatomic, strong) NSString * itemName;
[Export ("itemName", ArgumentSemantic.Retain)]
string ItemName { get; set; }
// #property unsigned long long itemId;
[Export ("itemId")]
ulong ItemId { get; set; }
// #property unsigned long long currentBufferSize;
[Export ("currentBufferSize")]
ulong CurrentBufferSize { get; set; }
// #property unsigned long long totalItemSize;
[Export ("totalItemSize")]
ulong TotalItemSize { get; set; }
// #property enum ItemType itemType;
[Export ("itemType")]
ItemType ItemType { get; set; }
// #property unsigned long long startByte;
[Export ("startByte")]
ulong StartByte { get; set; }
// #property unsigned long long endByte;
[Export ("endByte")]
ulong EndByte { get; set; }
// #property (nonatomic, strong) NSData * data;
[Export ("data", ArgumentSemantic.Retain)]
NSData Data { get; set; }
}
// #protocol IVirtualDriveOperations <NSObject>
[Protocol, Model]
[BaseType (typeof (NSObject))]
interface IVirtualDriveOperations{
// #required -(void)mountVirtualDriveWithItems:(NSArray *)items;
[Export ("mountVirtualDriveWithItems:")]
[Abstract]
void MountVirtualDriveWithItems (NSObject [] items);
// #required -(void)unMountVirtualDrive;
[Export ("unMountVirtualDrive")]
[Abstract]
void UnMountVirtualDrive ();
// #required -(id<IVirtualDriveOperations>)getVirtualDriveobject;
[Export ("getVirtualDriveobject")]
[Abstract]
IVirtualDriveOperations GetVirtualDriveobject ();
// #required -(void)createFile:(FileModel *)fileModel;
[Export ("createFile:")]
[Abstract]
void CreateFile (FileModel fileModel);
// #required -(void)renameFile:(FileModel *)fileModel;
[Export ("renameFile:")]
[Abstract]
void RenameFile (FileModel fileModel);
// #required -(void)moveFile:(FileModel *)fileModel;
[Export ("moveFile:")]
[Abstract]
void MoveFile (FileModel fileModel);
// #required -(void)deleteFile:(FileModel *)fileModel;
[Export ("deleteFile:")]
[Abstract]
void DeleteFile (FileModel fileModel);
// #required -(void)downloadedFile:(FileModel *)fileModel;
[Export ("downloadedFile:")]
[Abstract]
void DownloadedFile (FileModel fileModel);
// #required -(void)changeFileContents:(FileModel *)fileModel;
[Export ("changeFileContents:")]
[Abstract]
void ChangeFileContents (FileModel fileModel);
// #required -(void)createFolder:(FolderModel *)folderModel;
[Export ("createFolder:")]
[Abstract]
void CreateFolder (FolderModel folderModel);
// #required -(void)renameFolder:(FileModel *)folderModel;
[Export ("renameFolder:")]
[Abstract]
void RenameFolder (FileModel folderModel);
// #required -(void)moveFolder:(FileModel *)folderModel;
[Export ("moveFolder:")]
[Abstract]
void MoveFolder (FileModel folderModel);
// #required -(void)deleteFolder:(FileModel *)folderModel;
[Export ("deleteFolder:")]
[Abstract]
void DeleteFolder (FileModel folderModel);
}
}
I am tried the Command line tool like that /Library/Frameworks/Xamarin.Mac.framework/Versions/1.10.0.18/bin/bmac -oBLVirtualDrive.dll --tmpdir=/tmp -baselib=/Library/Frameworks/Xamarin.Mac.framework/Versions/1.10.0.18/lib/mono/XamMac.dll -r=System.Drawing IBLVirtualDrive.cs -s=IBLVirtualDriveenums.cs --compiler=mcs --new-style i am getting error like this error BI1018: bmac: No [Export] attribute on property BLVirtualDrive.BaseItemModel.Name any thing i missed in the command line field.

Answer 1

Maybe you need try adding Xamarin.Mac.dll instead of XamMac.dll, and removing MonoMac from your source.
using Foundation;
using AppKit;
using ObjCRuntime;
Also, add the following code at the top of Extras.cs file:
using System;
[AttributeUsage (AttributeTargets.Method)]
public sealed class MonoPInvokeCallbackAttribute : Attribute {
public MonoPInvokeCallbackAttribute (Type t) {}
}
You can find more information at the next link https://forums.xamarin.com/discussion/1171/difference-between-bmac-exe-on-xamarin-and-monomac-when-compiling-masshortcutsharp