BackUP And Restore Of Databse Using C# Code

System.Data.SqlClient.SqlException: Logical file DB_Jaggry is not part of database DB_Jaggry_Restore&. Use RESTORE FILELISTONLY to list the logical file names.<br />
RESTORE DATABASE is terminating abnormally

private void button1_Click(object sender, EventArgs e)
   {
       BackupDB(@"C:\TempDB_Jaggry.bak");
       RestoreDB(@"C:\TempDB_Jaggry.bak", "DB_Jaggry");
   }

public static void BackupDB(string backupDestinationFilePath)
 {
    try
    {
       // Console.WriteLine("Backup operation started");
        Backup backup = new Backup();
        //Set type of backup to be performed to database
        backup.Action = BackupActionType.Database;
        backup.BackupSetDescription = "BackupDataBase description";
        //Set the name used to identify a particular backup set.
        backup.BackupSetName = "Backup";
        //specify the name of the database to back up
        backup.Database = "DB_Jaggry";
        //Set up the backup device to use filesystem.
        BackupDeviceItem deviceItem = new BackupDeviceItem(
                                        backupDestinationFilePath,
                                        DeviceType.File);
        backup.Devices.Add(deviceItem);

        // Setup a new connection to the data server
        ServerConnection connection = new ServerConnection();               
        Server sqlServer = new Server(@"SNEHA-PC\SQLEXPRESS");
        //Initialize devices associated with a backup operation.
        backup.Initialize = true;
        backup.Checksum = true;               
        backup.ContinueAfterError = true;               
        backup.LogTruncation = BackupTruncateLogType.Truncate;                
        backup.SqlBackup(sqlServer);
       MessageBox.Show("Backup operation succeeded");
    }
    catch (Exception ex)
    {
        //Console.WriteLine("Backup operation failed");
       // Console.WriteLine(ex.Message);
        MessageBox.Show(ex.ToString());
    }           
 }

public static void RestoreDB(string backUpFilePath, string databaseName)
    {
    try
    {            
        Restore restore = new Restore();            
        restore.Database = databaseName;
        
        restore.Action = RestoreActionType.Database;                 
        restore.Devices.AddDevice(backUpFilePath, 
DeviceType.File);           


        restore.ReplaceDatabase = true;            
        restore.NoRecovery = false;
        restore.RelocateFiles.Add(new RelocateFile("DB_Jaggry",@"C:\Temp\DB_jaggry.mdf"));
       restore.RelocateFiles.Add(new RelocateFile("DB_Jaggry_Log",@"C:\Temp\DB_Jaggry_Log.ldf"));
        ServerConnection connection = new ServerConnection(@"SNEHA-PC\SQLEXPRESS");
        Server sqlServer = new Server(connection);
        restore.SqlRestore(sqlServer);
        MessageBox.Show("Restore operation succeeded");
    }
    catch (Exception ex)
    {
        
        MessageBox.Show(ex.ToString());
    }        
}