How we share folder and file ?, via dropbox api

To share a folder, you should first call ShareFolderAsync. That takes a "path" parameter that should be the path to the folder that you want to share. The documentation explains how to check the result of that operation.

Once that's done, you should then call AddFolderMemberAsync to invite members to that shared folder. That takes the shared folder ID, from the first step above, as well as the list of members you want to invite (a list of AddMember instances).

That would look something like this:

var shareFolderLaunch = await this.client.Sharing.ShareFolderAsync ("/folder_to_share");
var sharedFolderId = "";
if (shareFolderLaunch.IsAsyncJobId) {
    while (true) {
        var shareFolderJobStatus = await this.client.Sharing.CheckShareJobStatusAsync(shareFolderLaunch.AsAsyncJobId.Value);
        if (shareFolderJobStatus.IsFailed) {
            Console.WriteLine ("Sharing folder failed: " + shareFolderJobStatus.AsFailed.Value);
            return;
        } else if (shareFolderJobStatus.IsInProgress) {
            Console.WriteLine ("Sharing folder in progress...");
            // todo: add some delay
        } else if (shareFolderJobStatus.IsComplete) {
            Console.WriteLine ("Sharing folder complete.");
            sharedFolderId = shareFolderJobStatus.AsComplete.Value.SharedFolderId;
            break;
        }
    }
} else if (shareFolderLaunch.IsComplete) {
    sharedFolderId = shareFolderLaunch.AsComplete.Value.SharedFolderId;
} else {
    return;
}

Console.WriteLine ("Shared folder with ID: " + sharedFolderId);

var members = new[] { new AddMember(new MemberSelector.Email("email@example.com")) };
await this.client.Sharing.AddFolderMemberAsync(sharedFolderId, members);

hey @Greg , thanks for the code now i able to share a folder, but i think the next step is to mount the folder at the added member,  i want to do it automaticly from sharing can i ?

Yes, as long as you're authorized as the receiving user you can use MountFolderAsync to mount the shared folder in their account.

okay, i get it but how to get the share id is it the same way like we share the folder or i just need to use asyncidjob is complete ?, and why when i try to share file "add member selector "method that you gave to me is not working, its always return with null. and how to  change its level of acces

this my code 

Private Async Sub ShareFileToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles ShareFileToolStripMenuItem.Click
        For Each C As ListViewItem In listfile.SelectedItems

            Dim sharefile = A.Sharing.GetFileMetadataAsync(direktori.Text & "/" & C.Text)
            Dim sharefileid = sharefile.Result.Id
            MessageBox.Show(sharefileid)

            Dim member = {New AddMember(New MemberSelector.Email("vincencia.ratna@gmail.com"))}
            Await A.Sharing.AddFileMemberAsync(file:=sharefileid, members:=member)
        Next
    End Sub

and the next question is how we change folder  member policy ? 

The MountFolderAsync method takes a shared folder ID, which is the same as the sharedFolderId value from my code sample. 

You can also use ListMountableFoldersAsync/ListMountableFoldersContinueAsync to list the folders available to mount in an account.

Your latest sample instead seems to just be getting the ID of a file, not a shared folder ID. Also, it appears you're trying to use AddFileMemberAsync, which is different from AddFolderMemberAsync anyway.

The AddFileMemberAsync method does take a file path or ID. Here's a sample for AddFileMemberAsync that works for me:

var members = new[] { new MemberSelector.Email("email@example.com") };
await client.Sharing.AddFileMemberAsync ("/test.txt", members);

What specifically wasn't working for you? One thing I notice that may be a problem in your code is that you're building an array of AddMember, but AddFileMemberAsync just takes an array of MemberSelector.

okay greg, your code work, now my problem is  why i cant share mp3 ? , are there some file format that dropbox api doesnt support to share ?, and now i stil try to show the list of mountable folder, and mount it as reciever. i confuse how to retrieve the list. this is the las feature of my basic dropbox vb application, i interested to upgrade my application further with more robust API.

now the question is

1. what file extension dropbox support to add member beside txt ? 

2. how to get the list of mountable folder -> get the share id -> and mount it 

1) The file extension doesn't matter. You can share any file type. Are you getting an error when trying to share a different file?

2) You can use ListMountableFoldersAsync/ListMountableFoldersContinueAsync to list the folders available to mount in an account. You can then use MountFolderAsync to mount folders using the returned SharedFolderMetadata.SharedFolderId.