Share a document with specified user in Google Drive - vb.net

Question

I want to share a file that exists in Google Drive with a specified user. The file is not public.
Firstly, I want to show a file in a WebBrowser control.
Secondly, I want that when I share an URL to a different user, they can then show the file in their Google Drive.
Here is my code, I already can do the first step but for the second step, I don't know how I can do it.
Public Sub A(fichier As String)
CreateService()
Dim url As String = ""
Dim list = Service.Files.List()
Dim count = list.Execute()
For Each fich In count.Items
If (fich.Title) = fichier Then
url = fich.WebContentLink
Exit For
End If
Next
affich_image.img.Navigate(url)
affich_image.Show()

Answer 1

You can use the permissions.insert method.
Inserts a permission for a file or Team Drive.
To see the parameters and further details, try to visit the documentation.
Here, I provide you the sample code for .NET that was introduced in the said documentation.
using Google.Apis.Drive.v2;
using Google.Apis.Drive.v2.Data;
using System.Net;
// ...
public class MyClass {
// ...
/// <summary>
/// Insert a new permission.
/// </summary>
/// <param name="service">Drive API service instance.</param>
/// <param name="fileId">ID of the file to insert permission for.</param>
/// <param name="value">
/// User or group e-mail address, domain name or null for "default" type.
/// </param>
/// <param name="type">The value "user", "group", "domain" or "default".</param>
/// <param name="role">The value "owner", "writer" or "reader".</param>
/// <returns>The inserted permission, null is returned if an API error occurred</returns>
public static Permission InsertPermission(DriveService service, String fileId, String value,
String type, String role) {
Permission newPermission = new Permission();
newPermission.Value = value;
newPermission.Type = type;
newPermission.Role = role;
try {
return service.Permissions.Insert(newPermission, fileId).Execute();
} catch (Exception e) {
Console.WriteLine("An error occurred: " + e.Message);
}
return null;
}
// ...
}
You may also visit this SO post for further discussion.