how to pass datatable parameter to stored procedure sql server? - sql-server

Question

i need to pass data table to the following stored procedure
create procedure insert_data
(#a int ,
#b DataTable)
as
Begin
......
end
i use C#

Answer 1

You will need to do a couple of things to get this going, since you want to pass a table as a parameter you need to create a (1) Table Type and (2) make your store procedure accept a parameter of that type.
Following are the steps required to create a TABLE TYPE .
TABLE TYPE
CREATE TYPE dbo.DataTable AS TABLE
(
-- define table structure here
)
GO
Procedure
Now make you procedure accept a parameter of that table type.
create procedure insert_data
#a int ,
#b dbo.DataTable READONLY --<-- Note this is read only param
as
Begin
......
end
This passed param will be read-only param, so if you need to manipulate the values passed in this param you will need to get these values in a table variable or temp table inside you procedure before you can do any update or insert operations on them.
Consuming C#
You can make use of DataTable class to create a new instance of a that type which matches the you table type in sql server. something like this..
DataTable dt = new DataTable("DataTable");
// Add columns to this object same as the type in sql server
dt.Columns.Add("Column1", typeof(string));
dt.Columns.Add("Column2", typeof(Int32));
//Populate the dt object
dt.Rows.Add("Value1", 1);
dt.Rows.Add("Value2", 2);
dt.Rows.Add("Value2", 3);