Regarding particular table and index sizes,rowcounts?

Below is the script which may help you. Please note that I have added filegroup name, filename as well, which was your requirement in another question. But please, quite a few people have asked you, to review the answers given to your questions. Otherwise, you may stop getting help from some of our community

/* UNCOMMENT FOLLOWING TWO LINES IF YOU NEED TO KNOW ABOUT A PARTICULAR TABLE */
--DECLARE @tablename NVARCHAR(200) --UNCOMMENT THIS IF YOU
--SET @tablename = N'YOURTABLENAME'
/*============================================================================*/

SELECT  fg.name AS [FileGroup]
,     df.NAME AS [FileName]
,       sc.name + '.' + ta.name AS TableName
,       i.name AS IndexName
,       i.[type_desc] AS IndexTypeDesc
,       8 * SUM(a.used_pages) AS 'Indexsize(KB)'
,       SUM(ps.[row_count]) AS NumberOfRows
FROM    sys.indexes AS i
        JOIN sys.partitions AS p
        ON p.OBJECT_ID = i.OBJECT_ID
           AND p.index_id = i.index_id
        JOIN sys.allocation_units AS a
        ON a.container_id = p.partition_id
        JOIN sys.tables ta
        ON [p].[object_id] = [ta].[object_id]
        JOIN sys.dm_db_partition_stats ps
        ON ta.object_id = ps.object_id
        JOIN sys.schemas sc
        ON ta.schema_id = sc.schema_id
        JOIN sys.filegroups AS fg
        ON fg.data_space_id = i.data_space_id
        JOIN sys.[database_files] AS DF ON [i].[data_space_id] = [DF].[data_space_id]

--WHERE ta.[name] = @tablename -- UNCOMMENT THIS LINE IF YOU NEED TO KNOW ABOUT A PARTICULAR TABLE

GROUP BY fg.name
,     df.NAME
,       sc.name
,       ta.name
,       i.index_id
,       i.name
,     i.[type_desc]
ORDER BY sc.name
,       ta.name
,       i.index_id

Please get the required query from given below link-

http://sqlshares.blogspot.com/search/label/SQL%20Queries

The best way is right click on the database go to reports and select Disk Usage by Table.