question

Hello @GuptaPriyanka-3961 ,

Have you tried using Azure Device Update for IoT Hub client library for .NET ?

To learn how to import a new update using C#, you can check ImportUpdate sample.

The class ContentFactory.cs guides us on how to create an import manifest file programatically

 /// <summary>
         /// Creates import manifest file.
         /// </summary>
         /// <param name="manufacturer">The manufacturer.</param>
         /// <param name="name">The name.</param>
         /// <param name="version">The version.</param>
         /// <param name="fileName">Filename of the file.</param>
         /// <param name="fileSize">Size of the file.</param>
         /// <param name="fileHash">The file hash.</param>
         /// <returns>
         /// The new import manifest file.
         /// </returns>
         public string CreateImportManifestContent(string manufacturer, string name, string version, string fileName, long fileSize, string fileHash)
         {
 ...

Remember:
- Please accept an answer if correct. Original posters help the community find answers faster by identifying the correct answer. Here is how.
- Want a reminder to come back and check responses? Here is how to subscribe to a notification.