last ...

Interfaces/IXWebinarProvider.cs

@@ -272,7 +272,7 @@ namespace xWebinarService.Interfaces
             Guid id,
             XUserClaimsInfoDto userInfo = null
         );
-        
+
         /// <summary>
         /// Stream Specified File ...
         /// </summary>
@@ -281,8 +281,8 @@ namespace xWebinarService.Interfaces
         Task<FileStreamResult> StreamFile(
             Guid id,
             Guid fileId
-        );        
-        
+        );
+
         /// <summary>
         /// Stream Specified File ...
         /// </summary>
@@ -291,7 +291,37 @@ namespace xWebinarService.Interfaces
         Task<PhysicalFileResult> DownloadFile(
             Guid id,
             Guid fileId
-        );        
+        );
+
+        /// <summary>
+        /// Attach Provided Files to Specified Webinar ...
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="ids"></param>
+        /// <param name="connectionId"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task AttachFiles(
+            Guid id,
+            string ids,
+            string connectionId = null,
+            XUserClaimsInfoDto userInfo = null
+        );
+
+        /// <summary>
+        /// Detach Provided Files to Specified Webinar ...
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="ids">if null, detach all files ...</param>
+        /// <param name="connectionId"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task DetachFiles(
+            Guid id,
+            string ids,
+            string connectionId = null,
+            XUserClaimsInfoDto userInfo = null
+        );
         #endregion
 
         //

Interfaces/IXWebinarServiceControllerActions.cs

@@ -213,6 +213,30 @@ namespace xWebinarService.Interfaces
             [FromRoute] Guid id,
             [FromRoute] Guid fileId
         );        
+
+        /// <summary>
+        /// Attach Provided Files to Specified Webinar ...
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="ids"></param>
+        /// <returns></returns>
+        [HttpGet("{id}/Files/AttachMany")]
+        Task<ActionResult> AttachFiles(
+            [FromRoute] Guid id,
+            [FromQuery] string ids
+        );
+
+        /// <summary>
+        /// Detach Provided Files to Specified Webinar ...
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="ids">if null, detach all files ...</param>
+        /// <returns></returns>
+        [HttpGet("{id}/Files/DetachMany")]
+        Task<ActionResult> DetachFiles(
+            [FromRoute] Guid id,
+            [FromQuery] string ids = null
+        );        
         #endregion
 
         //