i think RDLC report no support Hijri date , but i have another way to solve this problem from sql server
select SUBSTRING(convert(varchar,the_Hijri_date,131), 0, 11) AS expr1
From Table
after that you must Add field " expr1 " in dataset
then from RDLC report set the field ( expr1 )
and run the report you will see Hijri date .
may be there are another professional way !!!
TAMER FAROUK